Briggs & Stratton 120000 Instruction Manual Download

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Briggs

Stratton

Single

Cylinder

OHV

Air-C

OO
led

ngine

8/09

273521 Twin Cylinder OHV Air-Cooled Engines

271172 Twin Cylinder L-Head Air-Cooled Engines

270962 Single Cylinder L-Head Air-Cooled Engines

276535 Two-Cycle Snow Engines

CE8069 Out of Production Engines (1919-1981)

Repair Manuals for other

Briggs & Stratton Engines:

Single Cylinder OHV

Air-Cooled Engines

Post office box 702

Milwaukee, wi 53201 usa

BRIGGS

STRATTON

coRPoRatioN

Part No. 276781-8/09

Quality Starts With A

Master Service Technician

www.thePowerPortal.com (Dealers)

bRiGGsandstRattoN.coM (consumers)

Summary of Contents for 120000

Page 1: ...es 276535 Two Cycle Snow Engines CE8069 Out of Production Engines 1919 1981 Repair Manuals for other Briggs Stratton Engines Single Cylinder OHV Air Cooled Engines Post office box 702 Milwaukee WI 53201 USA 2009 Briggs Stratton Corporation BRIGGS STRATTON CORPORATION Part No 276781 8 09 Quality Starts With A Master Service Technician www ThePowerPortal com Dealers BRIGGSandSTRATTON COM Consumers ...

Page 2: ...manual were based on the data available at the time of publication Briggs Stratton Corporation reserves the right to change alter or otherwise improve the product or the product manuals at any time without prior notice Briggs Stratton offers two complementary publications to enhance understanding of engine technology maintenance and repair Neither publication however is a substitution for a recogn...

Page 3: ...ZONTAL SERIES MODEL 150000 HORIZONTAL SERIES MODEL 200000 HORIZONTAL SERIES MODEL 210000 HORIZONTAL SERIES MODELS 97700 99700 VERTICAL SERIES MODEL 110000 VERTICAL SERIES MODEL 120000 VERTICAL SERIES MODEL 210000 VERTICAL SERIES MODEL 280000 VERTICAL SERIES MODEL 310000 VERTICAL SERIES MODEL 330000 VERTICAL SERIES ...

Page 4: ...ON 5 Governor Systems SECTION 6 Cylinder Heads and Valves SECTION 7 Starters SECTION 8 Lubrication Systems SECTION 9 Cylinders Covers and Sumps SECTION 10 Crankshafts Camshafts Balancing Systems and Gear Reductions SECTION 11 Pistons Rings and Connecting Rods SECTION 12 Engine Specifications SECTION 4 Fuel Systems and Carburetion ...

Page 5: ...THISPROPER SERVICE AND REPAIR IS IMPORTANT TO THE SAFE ECONOMICAL AND RELIABLE ...

Page 6: ...ATION SYSTEM 7 ENGINE MAINTENANCE 8 FUEL AND OIL RECOMMENDATIONS 8 MAINTENANCE CHART 9 FLYWHEEL BRAKE 9 COMBUSTION CHAMBER 11 AIR FILTER 11 SNOW HOOD 13 OIL AND OIL FILTER 14 SPARK PLUG 14 COOLING SYSTEM 15 ENGINE ADJUSTMENTS 16 ADJUST REMOTE CONTROLS 16 GOVERNOR ADJUSTMENTS 18 ADJUST VALVE CLEARANCE 21 ...

Page 7: ...in minor or moderate injury NOTICE indicates a situation that could result in damage to the product Prior to work read and understand the section s of this manual that pertain to the job Follow all safety warnings Wear suitable eye protection When servicing engines or equipment prevent accidental starting by disconnecting spark plug wire from the spark plug s and disconnect negative battery cable ...

Page 8: ...anging oil If you drain the oil from the top oil fill tube the fuel tank must be empty or fuel can leak out and result in a fire or explosion When transporting equipment Transport with fuel tank empty or with fuel shut off valve set to OFF When storing gasoline or equipment with fuel in the tank Store away from furnaces stoves water heaters or other appliances that have a pilot light or other igni...

Page 9: ... same precautions as gasoline WARNING Damaged worn or loose fuel compo nents can leak fuel Explosion or fire could result All fuel components should be in good condi tion and properly maintained Repairs should only be made with factory approved parts Repair work should be done by a qualified technician Flexible supply lines should be checked regu larly to make sure they are in good condition WARNI...

Page 10: ... BASIC DESIGN SERIES CRANKSHAFT ORIENTATION PTO BEARING REDUCTION GEAR AUXILIARY DRIVE LUBRICATION TYPE OF STARTER 2 5 6 8 9 10 11 12 13 15 16 18 19 20 21 22 23 24 25 28 29 30 31 32 35 38 40 42 43 44 46 47 49 52 54 58 61 0 1 2 3 4 5 6 7 8 9 A to Z 0 to 4 Horizontal Shaft 5 to 9 Vertical Shaft A to G Horizontal Shaft H to Z Vertical Shaft 0 Plain Bearing DU Non Flange Mount 1 Plain Bearing Flange M...

Page 11: ...tudes over 5 000 feet 1524 meters a minimum 85 octane 85 AKI 89 RON gasoline is acceptable To remain emissions compliant high altitude adjustment is required Operation without this adjustment will cause decreased performance increased fuel consumption and increased emissions Operation of the engine at altitudes below 2 500 feet 762 meters with the high altitude kit is not recommended Fresh Start F...

Page 12: ...rake Torque 1 Disconnect spark plug wire 2 Unscrew and or pry off static guard A Figure 2 3 Unscrew and remove fuel tank B Figure 2 4 Remove dipstick and oil fill tube A Figure 3 5 Unscrew and remove blower housing rewind assembly B First 5 Hours Change oil Every 8 Hours or Daily Check engine oil level Clean area around muffler and controls Clean finger guard Every 25 Hours or Annually Clean air f...

Page 13: ...disconnect both wires from the starter interlock switch C 3 Remove two screws D from brake bracket and remove bracket Figure 4 4 Inspect brake pad on brake lever Replace brake assembly if thickness is less than 0 09 2 28mm 5 Test stop switch as described in Section 2 6 Test electric starter interlock switch as described in Section 2 Assemble Flywheel Brake 1 Install brake assembly on cylinder and ...

Page 14: ...tion of the oil Dirt in the oil forms an abrasive mixture which wears down moving parts NOTE Snow engines do not have an air cleaner assembly Please refer to Snow Hood Maintenance for disassembly procedures NOTE Do not use pressurized air or solvents to clean the filter Pressurized air can damage the filter and solvents will dissolve the filter 1 Disassemble air cleaner system 2 Gently tap air fil...

Page 15: ...12 1 1 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 ...

Page 16: ...e 16 2 Remove fasteners and hood B 3 Disconnect stop switch wire C and primer hose D Figure 15 Figure 16 Inspection 1 Check hood for cracks or worn mounting holes Replace if necessary 2 Check primer hose for brittleness or leaks and check stop switch and wire for damage Replace parts as necessary Install 1 Connect stop switch wire C Figure 15 and primer hose D 2 Install hood and fasteners B 3 Inst...

Page 17: ...be replaced every year NOTE In some areas local law requires using resistor spark plugs to suppress radio frequency interference 1 Disconnect spark plug wire 2 Remove and inspect spark plug for wear and damage Replace spark plug if electrodes are burned away or the porcelain is cracked 3 Do not blast clean spark plugs Clean by scraping or wire brushing and then washing in a commercial solvent 4 Us...

Page 18: ... often when dust or airborne debris is present Figures 18 19 20 NOTICE Do not use water to clean the engine Water could contaminate the fuel system Use a brush or dry cloth to clean the engine Figure 18 Static Screen Figure 19 Rotating Screen Figure 20 Ducting Cylinder Fins WARNING Running engines produce heat Severe burns can occur on contact Allow muffler engine cylinder fins and radiator to coo...

Page 19: ...te Controls Horizontal Models 110000 120000 150000 1 Loosen casing clamp screw A Figure 22 2 Move throttle lever to fast position 3 Move casing in direction of arrow until slack is removed 4 Tighten casing clamp screw Figure 22 Vertical Models 97700 99700 1 Loosen casing clamp screw A Figure 23 on intake elbow assembly Figure 23 2 Move equipment speed control lever B to FAST position 3 Move contro...

Page 20: ...etors 1 Loosen casing clamp screw A Figure 26 2 Move throttle lever to fast position 3 Move casing in direction of arrow until casing stops moving and choke lever B moves to full choke position Figure 26 4 Tighten casing clamp screw Horizontal and Vertical Models 200000 210000 280000 310000 330000 1 Loosen casing clamp screw C Figure 27 2 Set throttle control to FAST position 3 Move governor contr...

Page 21: ...the governor shaft B Figure 29 until it stops in the direction noted in Step 2 4 Tighten screw holding governor lever to governor crank per Section 12 Engine Specifications 5 Before starting engine manually actuate throttle linkage to check for binding Figure 28 Figure 29 Top No Load Adjustment Vertical Models 97700 99700 1 Place throttle A Figure 30 and 31 in FAST position and insert a 1 8 3 2 mm...

Page 22: ... 2 Place throttle in SLOW position Hole in lever will line up with hole in governor control bracket Figure 33 Insert a 1 8 rod through holes to lock lever in this position Figure 33 3 Hold throttle lever against idle speed screw and using Tachometer 19200 or 19389 adjust to 1500 RPM Release throttle lever 4 Using Tang Bender 19229 or 19352 bend governed idle spring tang to obtain 1750 RPM Figure 3...

Page 23: ...ade before adjusting governor speeds 1 Start engine and run until it reaches operating temperature 2 Place control lever in idle position 3 Hold throttle in closed position with finger adjusting idle speed screw to 1200 RPM 4 Release throttle 5 Set control to 1750 RPM and bend tang A Figure 38 until it contacts remote control slide B 6 Using Tang Bender 19229 or 19352 bend spring tang to obtain th...

Page 24: ...y Production NOTE Check valve clearance while the engine is cold 1 Turn crankshaft counterclockwise until piston is at top dead center on the compression stroke This prevents the compression release from holding the valves open 2 Insert a narrow screwdriver or rod into the spark plug hole as a gauge then slowly turn crankshaft counterclockwise until the piston has moved down the bore by 1 4 6mm 3 ...

Page 25: ...ifications 2 Repeat for other valve Figure 42 OR 1 Loosen jam nut A Figure 43 at base of rocker arm stud Then using a feeler gauge B turn rocker arm screw C to obtain the correct clearance as listed in Section 12 Engine Specifications 2 Hold the screw and tighten the jam nut to value shown in Section 12 Engine Specifications 3 Check clearance again and re adjust if necessary Figure 43 ...

Page 26: ...NLY ALTERNATOR 33 3 AMP DC ONLY ALTERNATOR 33 14 VOLT AC ONLY ALTERNATOR 34 DUAL CIRCUIT ALTERNATOR 35 TRI CIRCUIT ALTERNATOR 36 5 9 AMP DC REGULATED ALTERNATOR 38 10 16 AMP DC REGULATED ALTERNATOR 39 20 AMP DC REGULATED ALTERNATOR 41 ELECTRIC STARTERS 43 SYSTEM 3 AND SYSTEM 4 43 12 VOLT DC STARTER MOTOR 45 120 VOLT AC STARTER MOTOR 46 BATTERIES 47 BATTERY AND CABLE RECOMMENDATIONS 47 BATTERY INST...

Page 27: ...24 2 2 OIL GARD SYSTEMS 49 ENGINE WILL NOT START 49 ENGINE STARTS AND RUNS WITH LOW OIL 50 ...

Page 28: ... is suspect see Equipment Affecting Engine Operation 1 Check Ignition Engine Stopped With spark plug installed attach Ignition Tester 19368 to spark plug lead and ground the other end of the tester Figure 1 Pull the starter rope or activate the electric starter if equipped If spark jumps the tester gap you may assume the ignition system is functioning satisfactorily Figure 1 Engine Running If engi...

Page 29: ...s as for a dry plug Testing Fuel Shut Off Solenoid The fuel shut off solenoid is controlled by the equipment ignition switch With the switch OFF the solenoid plunger closes stopping the fuel flow at the fixed main jet With the switch in the ON and START positions the solenoid plunger opens allowing normal fuel flow If operating properly the solenoid will click when the switch is turned ON and OFF ...

Page 30: ...the cylinder head gasket carburetor exhaust system and the crankcase breather tube Air flowing between the cylinder and cylinder head indicates that the cylinder head gasket is leaking Air flowing from the carburetor indicates air is leaking past the intake valve and seat Air flowing from the exhaust system indicates air is leaking past the exhaust valve and seat Air flowing from the crankcase bre...

Page 31: ...and type of replacement fuses required DC Shunt The Fluke meter will withstand DC input of 10 20 amps for up to 30 seconds The UNI T meter will withstand DC input of 10 amps for up to 10 seconds When checking DC output on 10 and 16 amp regulated systems the DC Shunt 19468 Figure 5 is required to avoid blowing a fuse in either of the meters Figure 5 Tachometer Tachometers 19200 A or 19389 B Figure ...

Page 32: ...of charge not matched to alternator output Damaged battery shorted battery cells Defective regulator 1 Ohm resistor shorted or grounded Tri Circuit system only Headlamps Not Working Inline fuse blown if equipped Defective headlamps Loose or corroded wires Open shorted or grounded wires between output connector and electric clutch Light switch defective Defective diode Tri Circuit system open or sh...

Page 33: ...Connector Color Alternator Output at 3600 RPM Unless Noted Figure DC Only Black White 5 Amp DC Output at 2800 RPM 8 AC Only Black White 14 Volts AC Lights Unregulated 9 DC Only Red Red 2 4 Amps DC Charging Unregulated 10 Dual Circuit Red Black White 2 4 Amps DC Charging Unregulated 14 Volts AC Lights Unregulated 11 Tri Circuit Black Green 5 Amps DC Charging 5 Amps DC Lights 12 Regulated 5 Amp Blac...

Page 34: ...d lead A from stator Diode encased at connector Red connector B output lead Figure 10 4 Dual Circuit Figure 11 3 Amps DC unregulated for charging battery red lead from stator A 14 Volts AC for lighting circuit black lead from stator B Diode encased at connector White connector E with two pin terminals White lead D AC current for lights Red lead C DC current for charging circuit Figure 11 5 Tri Cir...

Page 35: ...C from stator Yellow connector D with two pin terminals Two yellow leads E to regulator rectifier F One red lead B from regulator rectifier to red connector output lead A 10 and 16 Amp systems use the same stator color coding and regulator rectifier Alternator output is determined by the flywheel alternator magnet size Figure 14 8 20 Amp DC Figure 15 20 Amps DC regulated for charging battery Two y...

Page 36: ...diode s or regulator rectifier if equipped 5 Amp DC Only Alternator The 5 Amp DC alternator is designed to operate as an integral part of the engine and is separate from the starting and ignition system It is intended to provide DC charging current for a 12 Volt battery Contact battery or equipment manufacturer for battery information Test Alternator Output Disconnect charging lead to battery at c...

Page 37: ... the meter 3 Attach RED test lead clip to C and Black test lead clip to point D It may be necessary to pierce wire with a pin as shown Figure 18 If meter Beeps once diode is OK If meter makes a continuous tone diode is defective shorted If meter displays OL proceed to Step 4 4 Reverse test leads If meter Beeps once diode is installed backwards If meter still displays OL diode is defective open 5 I...

Page 38: ...ed for the lights the lights are available even if the battery is disconnected or removed Current for the DC side of the alternator is unregulated and is rated at 3 Amps The output rises from 2 Amps 2400 RPM to 3 Amps 3600 RPM Test Alternator Output AC 1 Insert RED test lead A Figure 20 into the V Ω receptacle in the meter 2 Insert BLACK test lead B into COM receptacle 3 Rotate selector to AC Volt...

Page 39: ...er makes a continuous tone diode is defective shorted If meter displays OL proceed to Step 4 4 Reverse test leads If meter Beeps once diode is installed backwards If meter still displays OL diode is defective open 5 If diode tests OK replace stator NOTE Service replacement diode harnesses are available Use Rosin Core solder when installing new harness Use shrink tubing or tape for all connections ...

Page 40: ...ng circuit In the Diode Test position the meter will display forward voltage drop across the diode s If voltage drop is less than 0 7 volts meter will Beep once as well as display voltage drop A continuous tone indicates continuity shorted diode An incomplete circuit open diode will be displayed as OL Charging Circuit Test RED Wire 1 Insert RED test lead A Figure 24 into the V Ω receptacle and set...

Page 41: ...are the same for the 5 9 Amp regulated system and the Tri Circuit System Test Alternator Output 1 Temporarily disconnect stator wire harness from the regulator rectifier 2 Insert RED test lead A Figure 26 into the V Ω receptacle in the meter 3 Insert BLACK test lead B into COM receptacle 4 Rotate selector to AC Volts position 5 Attach RED test lead clip to GREEN output terminal C 6 Attach BLACK te...

Page 42: ... rectifier converts the AC current to DC and regulates current to the battery The charging rate varies with engine RPM and temperature The stator and regulator rectifier are the same for the 10 and 16 Amp systems The system output is determined by the flywheel magnet size Test Alternator Output 1 Temporarily disconnect stator wire harness from the regulator rectifier 2 Insert RED test lead A Figur...

Page 43: ...tput reading would be 10 or 16 Amps depending upon the alternator system being tested The amperage will be less at maximum battery voltage 7 If NO or LOW output is found be sure that the regulator rectifier is grounded properly and all connections are clean and secure If there is still NO or LOW output replace the regulator rectifier Regulator Rectifier with Charge Indicator The regulator rectifie...

Page 44: ...ey switch must be in OFF position 3 Insert RED test lead into V Ω receptacle in meter 4 Insert BLACK test lead into COM receptacle 5 Rotate selector to DC Volts position 6 Attach red test lead probe A Figure 31 to the red wire G DC output terminal E of the connector 7 Attach black test lead probe B to negative battery terminal 8 Turn equipment key switch to ON position Meter should display Battery...

Page 45: ...e engine running at 3600 rpm the output should be 3 20 amps 7 If no or low output is found be sure that the regulator rectifier is grounded properly and all equipment connections are clean and secure If there is still no or low output replace the regulator rectifier ...

Page 46: ...AC only Brushes sticking etc Faulty solenoid Blown fuse or tripped breaker at power source 3 Starter Motor Spins But Does Not Crank Engine Sticking pinion gear Damaged pinion or ring gear Starter motor clutch slipping Incorrect rotation due to reversed motor polarity all motors rotate counterclockwise as viewed from pinion gear 4 Starter Motor Blows Fuses 120 Volt Starter Motor Only Parasitic load...

Page 47: ...ceramic magnets that can be damaged if the motor housing is hit deformed or dented 3 Set meter to DC Amps position Connect the black test lead C red test lead D starter motor battery E and meter as shown in Figure 35 Figure 35 4 Using Tachometer 19200 F spin the starter motor and note RPMs and amperage draw A starter motor in good condition will be 1400 RPM minimum 9 Amps maximum If starter motor ...

Page 48: ...ivated pinion gear should rise engage flywheel ring gear and crank engine The pinion gear must rotate counterclockwise as viewed from gear If starter motor drive does not react properly check helix and pinion gear for free operation If the pinion gear sticks clean the helix and gear with a mild solvent and compressed air If the pinion continues to stick replace the entire starter drive assembly NO...

Page 49: ...r test lead A Figure 39 is required for this test 1 Key switch must be in OFF position 2 Remove positive battery cable from battery and from stud terminal on solenoid 3 Disconnect wire from tab terminal on solenoid 4 Insert RED test lead into the V Ω receptacle in the meter and insert BLACK test lead into COM receptacle in the meter 5 Set meter to Diode position 6 Attach one meter test lead to eac...

Page 50: ...ctor securely Charging Battery 1 Clean the battery of all dirt and corrosion 2 Clean then lightly grease the terminals 3 Bring battery to full charge using a taper charge automatically reduces charge rate NOTE Do not exceed charge rate of 1 10 ampere for every ampere of battery rating Consult battery manufacturer for maximum charge recommendations NOTE If battery gets hot to the touch or is spitti...

Page 51: ...tion Tester 19368 2 Attach RED meter test clip to positive battery terminal Attach BLACK meter test lead to negative battery terminal 3 Turn switch to START Meter should display 9 volts or more while cranking engine If less than 9 volts replace battery NOTICE To prevent damage to the starter motor do not crank starter for more than 15 seconds without allowing starter to cool at least 2 minutes ...

Page 52: ... cutter blades 2 Check for loose worn or damaged drive belts and pulleys 3 Check for loose mounting bolts OIL GARD SYSTEMS Engine Will Not Start On Off Switch Light Flashes 1 Check engine oil level If oil is between ADD and FULL go to next step If low add oil to bring to FULL mark on dipstick If engine starts and runs problem corrected 2 Disconnect wire from module to plug and terminal assembly on...

Page 53: ...th spade terminal should be on L terminal RED ground wire should be on 3 terminal and BLACK wire from ignition armature should be on 2 terminal Engine Starts and Runs With Low Oil 1 Check wiring of ON OFF switch per Step 3 in Engine Will Not Start and ON OFF Switch Light Does Not Flash If wiring is correct proceed to next step 2 Check for oil sensor float stuck in open position per Step 2 in Engin...

Page 54: ...LS 110000 120000 150000 52 HORIZONTAL MODELS 200000 210000 54 HORIZONTAL MODELS 120000 150000 200000 210000 SNOW ENGINES 55 VERTICAL MODELS 97700 99700 110000 120000 56 VERTICAL MODELS 210000 280000 310000 330000 CLAMPED MUFFLER 58 VERTICAL MODELS 280000 310000 330000 BOLT ON MUFFLER 60 ...

Page 55: ...rts must be the same and installed in the same position as the original parts or fire could result WARNING Running engines produce heat Engine parts especially mufflers become extremely hot Severe thermal burns can occur on contact Combustible debris such as leaves grass brush etc can catch fire Allow muffler engine cylinder fins and radiator to cool before touching Remove accumulated debris from ...

Page 56: ...er and Guard 1 Coat threads of pipe with Valve Guide Lubricant 93963 Thread pipe into cylinder head exhaust port A Figure 5 2 Coat exposed threads of elbow with Valve Guide Lubricant 93963 Install elbow B on pipe C and tighten securely with outlet straight out from cylinder head Figure 5 3 Coat the threads of the muffler with Valve Guide Lubricant 93963 then thread exhaust muffler into elbow until...

Page 57: ...rd and Muffler 1 Remove screws A Figure 9 holding muffler guard to muffler 2 Remove screw holding muffler guard to control bracket Remove muffler guard and set aside Figure 9 3 Remove muffler support screws A Figure 10 Figure 10 4 Remove the exhaust pipe screws muffler assembly and gaskets Discard gaskets Figure 11 ...

Page 58: ... Install screws at exhaust pipe and torque to values listed in Section 12 Engine Specifications 4 Install muffler support screws and torque to values listed in Section 12 Engine Specifications 5 Lightly coat muffler guard mounting screws with Valve Guide Lubricant 93963 6 Place muffler guard over muffler and install screws into control bracket and side of muffler Torque to values listed in Section...

Page 59: ...rews with Valve Guide Lubricant 93963 2 Place new exhaust gasket on cylinder head and place exhaust pipe flange on gasket 3 Install screws at exhaust pipe and torque to values listed in Section 12 Engine Specifications 4 Install muffler support screws and torque to values listed in Section 12 Engine Specifications 5 Lightly coat muffler guard mounting screws with Valve Guide Lubricant 93963 6 Plac...

Page 60: ... must be inspected whenever the exhaust system is disassembled Check muffler mounting bracket and or muffler adapters for cracked welds or breakage Check muffler for split seams loose internal parts or cracked welds Replace any damaged parts with new OEM parts Never reinstall broken or damaged components Install Muffler and Guard 1 Coat mounting screws with Valve Guide Lubricant 93963 2 Place new ...

Page 61: ...fler application Figure 23 Figure 23 Remove Muffler 1 Remove muffler brace screws A B C Figure 24 and supports 2 Loosen muffler clamp D and slide muffler off adapter 3 Remove adapter screws adapter and gaskets Discard gaskets Figure 24 Inspect Exhaust System All exhaust system components must be inspected whenever the exhaust system is disassembled Check muffler mounting bracket and or muffler ada...

Page 62: ... to values listed in Section 12 Engine Specifications Figure 25 3 Install muffler supports and start but do not tighten screws A B C Figure 26 4 Slide muffler and muffler clamp on adapter 5 Torque muffler support screws A B C to values listed in Section 12 Engine Specifications 6 Torque muffler clamp D to values listed in Section 12 Engine Specifications Figure 26 ...

Page 63: ...kage Check muffler for split seams loose internal parts or cracked welds Replace any damaged parts with new OEM parts Never reinstall broken or damaged components Install Muffler 1 Lightly coat muffler adapter screws with Valve Guide Lubricant 93963 2 Install new gasket and adapter Install screws A Figure 29 and torque to values listed in Section 12 Engine Specifications Figure 29 3 Install muffle...

Page 64: ...ELS 97700 99700 110000 120000 65 VERTICAL MODEL 210000 65 CARBURETION 67 CARBURETOR IDENTIFICATION 67 CARBURETOR SERVICE 68 LMS 97700 99700 110000 120000 VERTICALS 68 LMS 110000 120000 150000 HORIZONTALS 72 READYSTART 120000 VERTICAL 75 LMT 200000 210000 280000 310000 330000 VERTICAL AND HORIZONTAL 77 NIKKI 280000 310000 330000 VERTICAL 82 NIKKI LP NG MIXER GASEOUS FUELED VERTICAL SHAFT 86 ...

Page 65: ...arting engine If engine floods set choke if equipped to OPEN RUN position Place throttle if equipped in FAST and crank until engine starts When operating equipment Do not tip engine or equipment at an angle which would cause fuel to spill Do not choke carburetor to stop engine Never start or run the engine with the air cleaner assembly if equipped or the air filter if equipped removed When changin...

Page 66: ... if equipped from hoses and set aside 4 Remove the two screws that secure the fuel pump and mounting bracket Inspection Inspect fuel pump for Restrictions or leaks in vacuum or fuel lines Cracks or distortion in pump body or base Stiff or brittle hoses Check shutoff valve and filter for damage or contamination and replace parts as necessary Installation 1 Install two screws in fuel pump and mounti...

Page 67: ...shroud to gain access to the carburetor 3 Remove screws A Figure 4 and the control panel trim plate Figure 4 4 Release hose clamp and disconnect fuel hose from carburetor fitting 5 Place hose in appropriate container open shut off valve and allow fuel to completely drain from tank 6 Remove shut off valve and filter if equipped from hose and set aside 7 Remove the mounting screws from tank support ...

Page 68: ...irty fuel tanks with Briggs Stratton Carburetor Cleaner 100041 or 100042 or equivalent 2 Inspect fuel tank for Corrosion Leaks Broken mounting brackets 3 Check fuel cap and filler neck for Proper seals Vents Functional quantity gauge if equipped 4 Check fuel filter for blockage of any kind 5 Check fuel shut off valve for proper operation Clean or replace parts as required Fuel filter replacement i...

Page 69: ...required Fuel filter replacement is recommended annually or any time the fuel system is serviced Installation 1 Slide mounting bracket if removed on cylinder head studs Install nuts and torque to values listed in Section 12 Engine Specifications NOTE Bracket is offset to allow clearance for the intake manifold 2 Position tank in bracket Install two bolts with spacers and torque to values listed in...

Page 70: ...al Shaft Figure 7 ReadyStart Models 110000 120000 Vertical Shaft Figure 8 Figure 9 LMT Models 200000 210000 280000 310000 330000 Vertical and Horizontal Shaft Figure 10 Nikki Models 280000 310000 330000 Vertical Shaft Figure 11 Nikki LP NG Mixer Gaseous Fueled Vertical Shaft Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 ...

Page 71: ... carburetors have a fixed high speed main jet and a non adjustable idle mixture except on early production models and are available in manual remote choke or Choke a Matic versions Figure 12 Remove Carburetor 1 Remove air cleaner assembly per Section 1 Discard the gasket 2 Move clamp and disconnect fuel hose from carburetor 3 Disconnect the Choke a Matic spring if equipped from choke lever A Figur...

Page 72: ...fiber washer and the gasket 2 Remove the float hinge pin C Figure 15 float D and inlet needle E If the needle has a metal tip also remove the soft needle seat in the carburetor body Discard the hinge pin inlet needle and seat NOTE On Model 97700 remove the main jet A and float disc B before removing the hinge pin float and needle Figure 15 3 Remove idle speed screw with spring B Figure 16 Remove l...

Page 73: ...ed Parts List to obtain the appropriate carburetor overhaul kit before reassembling the carburetor 1 Install new Welch plug A Figure 17 with a pin punch B of slightly smaller diameter than the plug Press against the plug until it is flat in the carburetor opening Do not cave in the plug Seal the edge of the plug with a non hardening sealant Figure 17 2 Install new foam seal B Figure 18 on choke sh...

Page 74: ...air cleaner gaskets and carburetor mounting gaskets any time the carburetor has been removed for service 1 Remove mounting screws from control bracket if reinstalled 2 Hook z bend of governor link into grommet on top of the throttle shaft lever 3 Place new gaskets or o rings between control bracket D Figure 22 adapter if equipped and carburetor 4 Position carburetor on control bracket or adapter a...

Page 75: ... remote choke Snow engine carburetors utilize both a primer and a choke for improved starting in cold temperatures Figure 25 Remove Carburetor 1 Remove air cleaner assembly per Section 1 Discard the gasket NOTE Snow engines do not have an air cleaner assembly Remove the 1 or 2 piece shroud to gain access to the carburetor 2 Move clamp and disconnect fuel hose from carburetor Disconnect primer hose...

Page 76: ...Inspect openings in the carburetor body for evidence of wear or damage If found replace the entire carburetor assembly 2 Inspect the choke shaft choke valve throttle shaft and throttle valve for evidence of wear or damage Replace parts as necessary 3 Using Carb Choke Cleaner 100041 or 100042 thoroughly clean the following components then follow with compressed air to dry Passages in the fixed main...

Page 77: ...le shaft B then slide shaft into carburetor body Rotate shaft until flat is facing out Position throttle valve on flat with numbers facing out A then install screws D Actuate the throttle shaft to check for proper movement Figure 31 4 Install idle speed screw with spring if equipped 5 Using Bushing Driver 19057 A Figure 32 install new needle seat with grooved edge down B until firmly seated Figure...

Page 78: ...cleaner assembly to carburetor per Section 1 Ensure breather hose is properly installed on the breather tube NOTE For snow engines install the 1 or 2 piece shroud 6 Adjust carburetor if applicable per Section 1 ReadyStart Carburetor Vertical Model 120000 This carburetor utilizes a thermostatically controlled choke system requiring no primer or manual choking when starting The linkages installed in...

Page 79: ...ve throttle shaft and throttle valve for evidence of wear or damage If found replace the entire carburetor assembly 3 Using Carb Choke Cleaner 100041 or 100042 clean inside and outside surfaces of carburetor then follow with compressed air to dry NOTE Do not soak the carburetor in carb choke cleaner or it will be damaged 4 If any passages remain plugged after cleaning replace the entire carburetor...

Page 80: ...le per Section 1 LMT Carburetor Horizontal and Vertical Models 200000 210000 280000 310000 330000 Two versions of this carburetor have been used Figures 40 and 41 These carburetors have a fixed high speed main jet with a screw for idle mixture and idle speed adjustment The letters LMT are cast into the body of the carburetor while the identification numbers are stamped into the carburetor mounting...

Page 81: ...mulsion tube A Figure 44 Figure 44 3 Remove float hinge pin float and inlet needle Discard the hinge pin and inlet needle 4 Screw a 1 4 20 tap into fuel inlet seat 3 4 turns and remove 5 Place a hex nut A Figure 45 and washer B on a 1 4 20 screw Place 1 4 drive 3 8 socket C over fuel inlet seat 6 Thread screw into tapped inlet seat until screw bottoms Thread nut down to washer and continue turning...

Page 82: ...Float Choke shaft and choke valve Throttle shaft and throttle valve All passages openings and the inside and outside of the carburetor body NOTE Do not soak non metallic components such as floats o rings seals or diaphragms in carb choke cleaner or they will be damaged 4 If any passages remain plugged after cleaning replace the component or the entire carburetor assembly Assemble Carburetor Consul...

Page 83: ...all new throttle shaft seal C Figure 50 with sealing lip down in carburetor body until top of seal is flush with top of carburetor D Install new foam seal B on throttle shaft then slide shaft into carburetor body Rotate shaft until flat is facing out Position throttle valve E on flat with numbers facing out then install screws Actuate the throttle shaft to check for proper movement Figure 50 5 Ins...

Page 84: ...sket on studs with long edge of gasket opposite fuel inlet of carburetor 2 Hook governor spring B Figure 53 in throttle lever hole without grommet Hook governor link A in throttle lever hole with grommet Figure 53 3 Hook choke link into outer hole of choke shaft from underneath Slide other end of choke link into slot in governor control bracket 4 Position carburetor on engine Install screws or nut...

Page 85: ... the carburetor body Figure 56 NOTE There is a spring between the fuel bowl and the float assembly Use caution when removing the fuel bowl to avoid losing the spring 2 Remove the solenoid C from the fuel bowl Discard gasket 3 Remove the fuel transfer tube B from the carburetor base A Figure 57 Discard o rings 4 Pull the hinge pin C from the float assembly Separate the float and inlet needle Discar...

Page 86: ...move the main jet and seal NOTE Do not attempt to remove the pilot jets which are pressed in and not serviceable 12 Remove the welch plug A Figure 62 from the carburetor with a modified pin punch Discard the welch plug Figure 62 Inspect and Clean Carburetor 1 Inspect openings in the carburetor body for evidence of wear or damage If found replace the entire carburetor assembly 2 Inspect the choke s...

Page 87: ...haft with the top of the spring contacting the choke shaft lever B Figure 63 Figure 63 4 Turn the choke shaft counterclockwise while gently pushing it into the carburetor body until the bottom end of the spring D rests on the back of the spring perch A 5 Lift the choke shaft up slightly and continue turning counterclockwise until the stop on the lever clears the spring perch Push the shaft inward ...

Page 88: ...ody then press the fuel transfer tube B Figure 69 onto the carburetor base C Figure 68 Figure 69 NOTE The locating tang on the fuel transfer tube MUST be placed in the recess of the carburetor base as shown 14 Insert the spring A Figure 70 to the bottom of the float assembly Place the fuel bowl on the carburetor base and fasten with screws Torque screws per values listed in Section 12 Engine Speci...

Page 89: ...ations 7 Attach fuel hose to carburetor and secure with hose clamp 8 Using new gasket install air cleaner assembly per Section 1 9 Connect wires to solenoid E 10 Adjust carburetor and or governor settings per Section 1 Nikki LP NG Mixer Vertical Model 310000 Gaseous Fuel Briggs Stratton utilizes the Nikki Gaseous Fuel Mixer on some of the 310000 Series Single Cylinder OHV engines The mixer is not ...

Page 90: ...5 GOVERNOR SYSTEMS LINKAGE AND SPRING ORIENTATION 88 GOVERNED RPM LIMITS 89 GOVERNOR SERVICE 89 HORIZONTAL MODELS 110000 120000 150000 200000 89 VERTICAL MODELS 97700 99700 110000 120000 210000 280000 310000 330000 91 ...

Page 91: ...t Model 97700 Figure 3 Vertical Shaft Model 99700 Figure 4 Vertical Shaft Models 110000 120000 210000 Primer Carburetors Figure 5 Vertical Shaft Models 110000 120000 210000 Choke A Matic Carburetors Figure 6 Models 280000 310000 330000 Choke A Matic Carburetors Figure 7 Models 280000 310000 330000 Manual Friction Figure 8 Models 280000 310000 330000 Manual Choke Figure 1 Figure 2 Figure 3 Figure 4...

Page 92: ... check the engine top governed speed with an accurate tachometer as noted above and adjust as required Governor Service Horizontal Models 110000 120000 150000 200000 210000 The mechanical governor is part of the crankcase cover The governor gear A Figure 9 is driven by the crankshaft timing gear B through an idler gear C The governor crank D is mounted in the cylinder assembly NOTE Stamped side of...

Page 93: ...rank for wear or damage Replace if necessary Assemble 1 Install governor crank from inside cylinder Slide washer when used on crank and install new push nut 2 Slide the governor lever on crank and finger tighten bolt and nut until crank turns with a slight resistance 3 Rotate crank until paddle is aligned with cup on governor gear assembly 4 Install new crankcase cover gasket s of same thickness a...

Page 94: ...n cylinder if equipped Inspect Governor 1 Check governor gear oil slinger assembly for worn weight pins worn or damaged governor cup and chipped or damaged teeth on paddles of oil slinger 2 If wear or damage is found replace the governor gear oil slinger assembly 3 Check governor crank for wear or damage Replace if necessary Assemble Governor 1 Install new governor crank seal in cylinder if equipp...

Page 95: ...ive slot in cam gear 7 Install sump screws in order shown in Figure 16 and Figure 17 Torque to values listed in Section 12 Engine Specifications NOTE The screw at position four or position nine Figure 16 or Figure 17 was factory coated with sealant Coat screw with a non hardening sealant such as Permatex 2 or equivalent before installing 8 Adjust governor system per Section 1 Figure 16 Figure 17 ...

Page 96: ...N 6 CYLINDER HEAD AND VALVES SERVICE CYLINDER HEAD 94 HORIZONTAL AND VERTICAL MODELS 97700 99700 110000 120000 150000 94 SERVICE CYLINDER HEAD 99 HORIZONTAL AND VERTICAL MODELS 200000 210000 280000 310000 330000 99 ...

Page 97: ...sing muffler carburetor control bracket assembly and intake manifold Remove Cylinder Head Horizontal and Vertical Models 97700 99700 110000 120000 150000 1 Remove four screws A Figure 1 or 2 from rocker cover then remove cover and gasket Figure 1 Figure 2 2 Remove cylinder head screws Figures 3 4 5 6 then remove head and gasket from cylinder Figure 3 Figure 4 Figure 5 ...

Page 98: ...ve stem caps A Figure 9 if used the rocker arm studs and the push rod guide models 97700 99700 3 Using thumbs press down on each valve spring retainer and disengage retainer from valve stem B Remove retainers springs valves and intake valve stem seal washer if equipped Figure 9 4 Remove push rod cylinder head plate and plate gasket models 110000 120000 150000 Remove and discard the plastic push ro...

Page 99: ... commercially available valve grinder However Briggs Stratton does not recommend this practice because the quality of the resurfacing may be insufficient Instead valve replacement is recommended 5 Oil the intake valve guide and intake valve stem then insert valve into head 6 Using Valve Lapping Tool 19258 and Lapping Compound 94150 lap valve and seat together to assure a good sealing surface Remov...

Page 100: ...oove in valve stem Figure 14 Figure 14 Install Cylinder Head 1 Coat threads of all cylinder head screws with Valve Guide Lubricant 93963 2 Using a new head gasket install cylinder head on cylinder and start screws by hand Step torque screws in sequence shown Figures 15 16 17 18 until final torque value is achieved Torque screws to value listed in Section 12 Engine Specifications Figure 15 Figure 1...

Page 101: ...ire a jam nut to be threaded approximately half way up the threads of the stud before installation into the head 5 Install push rods through guides and into same positions as removed Ensure rods are seated in valve tappets Place valve stem caps if used on valve stems 6 Place rocker arms and rocker balls on rocker arm studs Figure 19 Install rocker arm screws and or lock nuts on studs and tighten u...

Page 102: ...linder Head 1 Loosen rocker arm screws and or lock nuts and remove from rocker arm studs Remove rocker arms and rocker balls from studs A Figure 21 Figure 21 2 Remove the rocker arm studs 3 Using thumbs press down on each valve spring retainer and disengage retainer A Figure 22 from valve stem B Remove retainers springs valves and intake valve stem seal washer if equipped Figure 22 4 Remove push r...

Page 103: ...ead of all lapping compound residue Assemble Cylinder Head 1 Install new plastic push rod guides A Figure 23 into the cylinder head plate Figure 23 2 Using new plate gasket install the cylinder head plate Torque screws to values listed in Section 12 Engine Specifications 3 Lightly coat valve stems with Valve Guide Lubricant 93963 then insert valves into cylinder head Do not get lubricant on valve ...

Page 104: ...ame positions as removed Ensure rods are seated in valve tappets Place valve stem caps if used on valve stems Figure 29 Figure 29 5 Place rocker arms and rocker balls on rocker arm studs Install rocker arm screws and or lock nuts on studs and tighten until there is zero clearance between the valve stem caps and the rocker arms 6 Rotate crankshaft at least twice to ensure proper movement of the pus...

Page 105: ...102 6 6 ...

Page 106: ...000 120000 105 VERTICAL MODEL 280000 106 SERVICE REWIND STARTER 106 INSTALL BLOWER HOUSING STARTER 107 HORIZONTAL MODELS 110000 120000 150000 200000 210000 107 VERTICAL MODELS 97700 99700 108 VERTICAL MODELS 110000 120000 108 VERTICAL MODEL 280000 109 SERVICE STARTER CLUTCH 109 ELECTRIC STARTERS 110 REPLACE RING GEAR 110 SYSTEM 3 AND SYSTEM 4 110 12 VOLT STARTERS 111 120 VOLT STARTERS 114 ...

Page 107: ... air cleaner assembly 3 Remove the screws A Figure 1 and the control panel trim Figure 1 4 Remove the screws B Figure 2 and blower housing Figure 2 5 Carefully drill through all rivet heads and remove rewind starter Do not allow drill bit to cut into the holes in the starter housing NOTE Do not attempt to drill out the rivets while the blower is still on the engine The rivets are made of steel and...

Page 108: ...ain residual fuel Disconnect spark plug wire 2 Remove air cleaner cover Using flat bladed screwdriver press on tab A Figure 5 and lift finger guard off engine Figure 5 3 Remove screws B Figure 6 from trim plate or C from rewind guard Remove trim plate or guard Figure 6 4 Remove screws D Figure 7 and screw and spacer E then remove tank from engine Figure 7 NOTE On some model 120000 engines the fuel...

Page 109: ... the engine The rivets are made of steel and the shavings will collect on the flywheel magnets Service Rewind Starter Disassemble Rewind Starter 1 Pull out rope from rewind starter as far as it will go Then allow rope to retract slightly until the hole in the pulley and the eyelet in the housing are lined up Securely clamp the pulley and housing together to prevent the pulley from spinning 2 Pull ...

Page 110: ...housing are lined up Securely clamp the pulley and housing together to prevent the pulley from spinning NOTE Before proceeding consult the Illustrated Parts List or Section 12 Engine Specifications to ensure correct diameter and length of rope is being installed 5 Insert one end of starter rope through eyelet and then through hole in pulley Tie an overhand knot in end of rope then pull rope until ...

Page 111: ...t off valve Connect fuel hose to carburetor Connect spark plug wire Figure 12 Vertical Models 110000 120000 1 Install the oil fill tube and dipstick Install the screws F Figure 13 and blower housing Figure 13 2 Install screws D Figure 14 and spacer E then install tank from engine Torque screws to values listed in Section 12 Engine Specifications Figure 14 3 Install screws B Figure 15 to trim plate...

Page 112: ...nd 6 ball bearings E Figure 18 Disassemble Starter Clutch 1 Using Starter Clutch Wrench 19244 and Flywheel Strap Wrench 19433 remove clutch from crankshaft 2 Remove retaining screws if used from clutch housing Using a screwdriver or wedge pry the cover from the housing NOTE Perform this procedure over a small bowl to catch the clutch balls as the cover comes off Inspect Clutch Parts 1 Using Carb C...

Page 113: ... flywheel ring gear proceed as follows 1 Mark center of rivets holding ring gear A Figure 18 to flywheel with a center punch 2 Drill out rivets using a 3 16 4 7 mm drill bit 3 Remove the ring gear and clean holes after drilling 4 Attach new gear to flywheel using four screws B and lock nuts C provided with the gear Figure 19 System 3 System 4 Check Starter Drive and Clutch When starter switch is a...

Page 114: ...ure 22 12 Volt Starters Check Starter Drive and Clutch When starter switch is activated pinion gear should engage the ring gear and crank engine The clutch should not slip during engine cranking and pinion gear shouldn t bind on the helix NOTE Do not oil the pinion gear or helix 1 Remove the starter from the engine 2 Using a mild solvent clean the drive and clutch assembly then dry with compressed...

Page 115: ...arter Motor Drive C Ring Retainer 1 Place clutch on starter shaft A Figure 25 Rotate clutch until it drops into place B Figure 26 2 Install pinion gear C Figure 26 with beveled edge of teeth up Install return spring D into recess of pinion gear Figure 27 3 Place wave washer E Figure 27 with concave side up and flat washer F on starter clutch spline ...

Page 116: ...snaps into groove in shaft 7 Manually actuate pinion gear on helix to ensure proper movement Figure 29 Disassemble Starter Drive Roll Pin Retainer 1 Place starter drive retainer on support block Figure 29 and drive out roll pin A Figure 30 with a 5 32 4mm pin punch Discard roll pin Figure 30 Figure 31 2 Remove retainer B washer C pinion gear D and starter clutch E from starter shaft ...

Page 117: ... and retainer B on starter shaft 4 Press new roll pin A through retainer slot and starter shaft hole until pin is centered in shaft 5 Manually actuate pinion gear on helix to ensure proper movement 120 Volt Starters The 120 Volt AC starter motors are not serviceable If a failure occurs the entire motor switch assembly must be replaced Refer to the appropriate Illustrated Parts List to obtain repla...

Page 118: ...ODELS 97700 99700 110000 120000 116 VERTICAL MODELS 280000 310000 117 VERTICAL MODELS 210000 280000 310000 330000 118 LUBRICATION SYSTEMS 119 OIL DIPPER LUBRICATION 119 OIL SLINGER LUBRICATION 119 OIL SLINGER WITH PRESSURE FILTRATION 120 PRESSURE LUBRICATION 120 OIL PUMP SERVICE 120 OIL FILTER AND ADAPTERS 122 OIL PRESSURE SWITCH 123 OIL GARD SYSTEMS 123 ...

Page 119: ...er hose B Figure 1 from air cleaner 2 Remove rocker cover with breather hose A and gasket Discard gasket Figure 1 Check Breather 1 Gently blow air into the breather tube There should be no air flow out the valve 2 Apply vacuum to the breather tube Air should flow freely into the valve 3 If air flow is restricted under vacuum at the tube or has no resistance when blowing on the tube replace the val...

Page 120: ...nstall Breather 1 Install new breather passage gasket and breather passage cover on top of cylinder Torque four screws to values listed in Section 12 Engine Specification 2 Place new breather gasket and breather assembly on side of cylinder Torque two screws to values listed in Section 12 Engine Specification Service Breather Vertical Models 280000 310000 Early Production Remove Breather 1 Remove ...

Page 121: ...y Service Breather Vertical Models 210000 280000 310000 330000 Current Production Remove Breather 1 Remove breather tube B Figure 5 from breather cover A Figure 5 2 Remove two screws B Figure 6 breather cover Discard gasket before date code 070719xx or clean off sealant after date code 070718xx Figure 6 Check Breather 1 Remove and check breather reed A Figure 7 If the reed is worn or bent it canno...

Page 122: ...cation Horizontal Models 110000 120000 150000 200000 210000 Two types of dippers are used on horizontal shaft engines One is integral to the rod cap the other is a separate part A Figure 9 attached to the rod cap with a connecting rod screw Inspect the dipper for evidence of bending cracking or looseness Replace if necessary following instructions in Section11 Pistons Rings and Connecting Rods Fig...

Page 123: ...ers the pump through a slot and is pushed up the hollow camshaft to the magneto upper camshaft bearing and through a drilled passage to the crankshaft magneto bearing Figure 12 The oil slinger lubricates the remaining bearings and journals Figure 12 Vertical Models 280000 310000 330000 On some of these models the gerotor pump draws oil from the sump and pumps it through the oil filter then directl...

Page 124: ...of oil pump screens have been used on models 280000 310000 330000 Early oil pump screens A Figure 16 before date code 94110700 were mounted inside the sump and held with one screw B Figure 16 The intermediate screen A Figure 17 after date code 94110600 can be removed at the same time as the oil pump Figure 17 Current oil pump screen must be driven out from inside the sump Figure 18 Figure 18 Insta...

Page 125: ...separately 3 Pre oil and install outer rotor D Figure 20 in pump cavity Do not use force to install 4 Pre oil and install inner rotor C in pump cavity 5 Turn rotor to engage pump in cam or governor gears 6 Place o ring B in groove in cover E or sump Figure 20 7 Place pump cover on oil pump cavity Figures 21 22 23 Torque screws to values listed in Section 12 Engine Specifications NOTE Some covers h...

Page 126: ...pens at approximately 9 13 PSI 62 90 bar Figure 25 Test Oil Pressure Switch 1 Unscrew the switch to remove it for testing 2 Connect one test meter lead to the switch terminal and the other lead to the metal body of the switch 3 The meter should indicate continuity 4 Replace the switch if there is no continuity 5 Install switch and tighten to values given in Section 12 Engine Specifications NOTE Do...

Page 127: ...oil level and bring level to FULL If engine still does not start disconnect lead at the oil fill plug terminal If engine starts the module is faulty or the internal crankcase float is sticking Clean or replace parts as necessary In engines equipped with a Run Sense system if the engine halts during operation or will not remain running upon starting check oil level if oil level is at FULL and engin...

Page 128: ... CYLINDERS COVERS AND SUMPS CYLINDER 126 INSPECT CYLINDER 126 RECONDITIONING BORE 126 RESIZING BORE 126 CLEAN CYLINDER 127 MAIN BEARINGS 127 CHECK BEARINGS 127 REPLACE BEARINGS 128 COVERS AND SUMPS 132 INSTALLATION 132 ...

Page 129: ...ed in Section 12 Engine Specifications If the cylinder bore is more than 0 003 0 08 mm oversize or 0 0015 04 mm out of round it must be resized Reconditioning Bore If cylinder bore is within specification and shows no signs of scoring or other damage it can be reconditioned using a rigid hone with finishing stones to restore the proper crosshatch angle The correct crosshatch of approximately 45 Fi...

Page 130: ...GS Check Bearings Briggs Stratton OHV engines are equipped with plain bearings machined into the cylinder or cover sump DU bearings or ball bearings to support the crankshaft Check Plain Bearings Machined bearings are not repairable If a machined bearing is scored or worn the cylinder or cover sump must be replaced Check DU Bearings Main bearings should be replaced if scored or if plug gauge A Fig...

Page 131: ...from oil seal side Place a reference mark B on driver to indicate proper depth when installing the new bearing Figure 9 4 Place cylinder support tool C Figure 10 under cylinder or cover sump bearing B Press driver until bearing is extracted Magneto Bearing Tools Model Series Bushing Driver Cylinder Support 110000 120000 All 19124 19123 150000 H S 19124 19123 210000 H S 19179 19227 210000 V S 19450...

Page 132: ... 12 with 1 8 round pin punch to prevent bearing from turning Figure 12 Replace Ball Bearing Horizontal Models 120000 150000 1 Select tools needed from charts below 2 Remove retaining ring and governor idler gear A Figure 13 Remove oil seal Bearing Removal Tools Tool Part Description Tool Part Washer 690582 Puller Screw 19318 Removal Driver 19320 Support 19454 B earing Installation Tools Tool Part ...

Page 133: ... until flush with crankcase cover 9 Install governor idler gear and E ring Figure 15 NOTE Always install new oil seals when engine is reassembled or when replacing bearings Always use the correct seal protector to prevent damaging the oil seal during installation Replace Ball Bearing Horizontal Models 200000 210000 1 Select tools needed from charts below 2 Remove retaining ring and governor idler ...

Page 134: ...eded from charts below 2 Remove oil seal 3 Assemble washer C Figure 18 to puller screw D Insert puller screw and washer through small end of driver B Insert from outside of sump against inner race of ball bearing Place large end of support A over ball bearing 4 Insert screw with washer and driver through ball bearing and thread into support Continue tightening screw until ball bearing is removed F...

Page 135: ...gear and oil pump when used is engaged with cam gear Do not force cover or sump 3 Install screws and tighten in sequence shown Figure 20 Vertical Shaft Models 97700 and 99700 Figure 21 Vertical Shaft Models 110000 and 120000 Figure 22 Vertical Shaft Models 210000 280000 310000 and 330000 Figure 23 Horizontal Shaft Models 120000 and 150000 Figure 24 Horizontal Shaft Models 200000 and 210000 4 Torqu...

Page 136: ...133 9 9 Figure 22 Figure 23 Figure 24 ...

Page 137: ...134 9 9 ...

Page 138: ...T CRANKSHAFT AND CAMSHAFT 136 INSTALL CRANKSHAFT AND CAMSHAFT 137 INSTALL CRANKCASE COVER OR SUMP 138 CHECK AND ADJUST CRANKSHAFT END PLAY 139 GEAR REDUCTION 140 DISASSEMBLE 140 INSPECT 140 ASSEMBLE 140 FILL GEAR CASE 141 AUXILIARY PTO 142 REMOVE 142 INSPECT 142 ASSEMBLE 142 COUNTERBALANCE SYSTEMS 143 SYNCHRO BALANCE SYSTEMS 143 AVS BALANCE SYSTEM 145 ...

Page 139: ...n clear of cam lobes Lift out camshaft B Figure 2 6 Rotate crankshaft to place piston at Top Dead Center TDC 7 Remove connecting rod cap then slide out crankshaft Inspect Check Crankshaft 1 Inspect crankshaft for scoring on mag journal A Figure 3 crankpin journal B and PTO journal C Replace crankshaft is scoring is found or if crankshaft is bent DO NOT attempt to straighten bent crankshafts Figure...

Page 140: ...led to the crankshaft before installing into the cylinder 4 Assemble connecting rod assembly to crankshaft 5 Install the timing gear to the crankshaft with timing mark out The flange of the gear must face the counterweight link if equipped 6 Install camshaft making sure tappets clear cam lobes Timing marks A Figures 6 7 8 must align 7 On horizontal crankshaft engines make sure the paddle on the go...

Page 141: ...stalling cover 2 Install screws in sequence shown in Figures 9 10 11 and 12 Figure 9 Horizontal shaft models 120000 150000 200000 210000 Figure 10 Vertical shaft models 97700 99700 Figure 11 Vertical shaft models 120000 210000 Figure 12 Vertical shaft models 280000 310000 330000 3 Torque to values listed in Section 12 Engine Specifications Figure 9 Figure 10 Figure 11 Figure 12 NOTE Screws assembl...

Page 142: ...a shim per the Illustrated Parts List or replace the cover or sump NOTE If using shims install as follows Models 120000 150000 Vertical and Horizontal Engines install shim on magneto end of crankshaft A Figure 13 Models 97700 99700 Vertical Engines use additional gaskets to get proper end play A Figure 14 Models 200000 210000 Horizontal Engines install shim on PTO end of crankshaft A Figure 15 Mod...

Page 143: ...d drive shaft gear for worn cracked or chipped teeth Replace if damaged or worn 3 Inspect gear case and cover for cracks damaged mounting or damaged gasket surfaces Replace if damaged Assemble Gear Reduction 1 If replacing seals install with sealing lip A Figure 19 toward engine side of gear case B or cover C until seal is flush with gear case or cover Figure 19 NOTE The gear reduction assembly mu...

Page 144: ...ue to values listed in Section 12 Engine Specifications Figure 21 Fill Gear Case with Lubricant 1 Remove oil level plug C Figure 22 and vent plug A 2 Fill gear case with SAE oil Above 40 F 10 C use 80w90 for Horizontal Models 120000 150000 Above 40 F 10 C use 30w for Horizontal Models 200000 210000 Below 40 F 10 C use 10w30 for all gear reductions 3 Fill gear case just to the point of overflowing ...

Page 145: ...om of sump The slinger camshaft and worm gear assembly will remain in the cylinder Figure 24 3 With a 3 16 pin punch drive the roll pin in the bevel gear B through the allen screw hole 4 Remove screw and PTO shaft stop then slide out PTO shaft Inspection Inspect all parts for evidence of wear or damage If replacement is required ensure the correct rotation set clockwise or counterclockwise is chos...

Page 146: ...1 Remove crankshaft gear A Figure 26 NOTE If gear is tight pry it off using two screwdrivers being careful not to damage gear 2 Woodruff key B can be removed if required 3 Remove screw A Figure 27 from counterweight 4 Remove PTO counterweight B dowel pin C and link D from crankshaft 5 Remove crankshaft from magneto counterweight E Figure 27 Inspect 1 Visually inspect counterweight bearings for sco...

Page 147: ...torque screw Check again for binding Figure 28 Install 1 If woodruff key was removed install in crankshaft 2 Slide timing gear onto crankshaft with chamfer toward eccentric NOTE If gear is tight it can be expanded slightly by heating on a lamp 3 Place crankshaft and counterweight assembly into cylinder and start magneto journal into magneto bearing 4 Align link A Figure 29 with crankcase link pin ...

Page 148: ...ensions replace both counterweights as a set 3 Measure the crankshaft eccentric diameters and compare to the values shown in Section 12 Engine Specifications 4 If crankshaft eccentrics are worn scored or discolored replace the crankshaft Assemble 1 Lubricate all bearing surfaces with clean engine oil 2 Slide the counterweight links on the crankshaft eccentrics NOTICE Both links must be installed w...

Page 149: ...146 10 10 ...

Page 150: ...147 9 11 SECTION 11 PISTONS RINGS AND CONNECTING RODS REMOVE PISTON AND CONNECTING ROD 148 DISASSEMBLE 148 INSPECT 148 ASSEMBLE 149 INSTALL PISTON AND CONNECTING ROD 150 ...

Page 151: ...hin steel rails and a spring expander These must be removed by hand as follows Grasp one end of the upper steel rail and wind the rail from the oil ring groove into the center ring groove Repeat into the top ring groove and then off the piston Remove the spring expander then remove the lower steel rail Inspect Check Piston and Pin 1 Inspect piston for scoring galling or other damage Replace piston...

Page 152: ...ng Rod If the crankpin bearing A Figure 6 or the piston pin bearing B is scored the rod must be replaced 1 Reinstall rod cap and bolts on rod 2 Using a dial caliper or plug gauge measure the two bearing diameters Compare with reject dimensions listed in Section 12 Engine Specifications If either bearing exceeds the reject dimensions the rod must be replaced 3 Remove rod bolts and rod cap Set aside...

Page 153: ...l then install the upper steel rail Install Piston and Connecting Rod 1 Thoroughly clean and oil cylinder bore and crankpin journal 2 Rotate crankshaft until crankpin journal is at bottom of stroke 3 Using Ring Compressor Tool 19070 or 19230 install piston with notch or arrow A Figure 9 toward flywheel side of engine taking care not to damage crankpin journal or connecting rod bearing Figure 9 4 F...

Page 154: ...RIZONTAL SERIES 156 MODEL 200000 HORIZONTAL SERIES 158 MODEL 210000 HORIZONTAL SERIES 160 MODELS 97700 99700 VERTICAL SERIES 162 MODEL 110000 VERTICAL SERIES 164 MODEL 120000 VERTICAL SERIES 166 MODEL 210000 VERTICAL SERIES 168 MODEL 280000 VERTICAL SERIES 170 MODEL 310000 VERTICAL SERIES 172 MODEL 330000 VERTICAL SERIES 174 ...

Page 155: ...ol Panel Trim 40 lb in 5 Nm Crankcase Cover 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Head Plate 100 lb in 11 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 180 lb in 20 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 180 lb in 20 Nm Flywheel Guard 30 lb in 3 Nm Fuel Tank 85 lb in 10 Nm Governor Lever Nut 45 lb in 5 Nm Muffler 100 lb in 11 Nm Muffler Support Bracket 45 lb in ...

Page 156: ... 17 mm PTO Side Journal 1 061 in 26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 29 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 29 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6258 in 15 89 mm 6268 in 15 92 mm PISTON Pisto...

Page 157: ...ol Panel Trim 40 lb in 5 Nm Crankcase Cover 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Head Plate 100 lb in 11 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 180 lb in 20 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 180 lb in 20 Nm Flywheel Guard 30 lb in 3 Nm Fuel Tank 85 lb in 10 Nm Governor Lever Nut 45 lb in 5 Nm Muffler 100 lb in 11 Nm Muffler Support Bracket 45 lb in ...

Page 158: ... 17 mm PTO Side Journal 1 062 in 26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 29 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 29 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6728 in 17 09 mm 6742 in 17 12 mm PISTON Pisto...

Page 159: ...ol Panel Trim 40 lb in 5 Nm Crankcase Cover 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Head Plate 100 lb in 11 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 180 lb in 20 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 180 lb in 20 Nm Flywheel Guard 30 lb in 3 Nm Fuel Tank 85 lb in 10 Nm Governor Lever Nut 45 lb in 5 Nm Muffler 100 lb in 11 Nm Muffler Support Bracket 45 lb in ...

Page 160: ... 17 mm PTO Side Journal 1 062 in 26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 29 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 29 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6728 in 17 09 mm 6742 in 17 12 mm PISTON Pisto...

Page 161: ... 100 lb in 11 Nm Control Panel Trim 40 lb in 5 Nm Crankcase Cover 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 180 lb in 20 Nm Flywheel Nut 120 lb ft 160 Nm Flywheel Fan 140 lb in 16 Nm Flywheel Guard 30 lb in 3 Nm Fuel Tank 90 lb in 10 Nm Governor Lever Nut 40 lb in 5 Nm Muffler 180 lb in 20 Nm Muffler Support Bracket 125 lb in 14 Nm Oil Dra...

Page 162: ...17 mm PTO Side Journal 1 0615 in 26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6258 in 15 89 mm 6268 in 15 92 mm PISTON Pisto...

Page 163: ... 100 lb in 11 Nm Control Panel Trim 40 lb in 5 Nm Crankcase Cover 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 180 lb in 20 Nm Flywheel Nut 120 lb ft 160 Nm Flywheel Fan 140 lb in 16 Nm Flywheel Guard 30 lb in 3 Nm Fuel Tank 90 lb in 10 Nm Governor Lever Nut 40 lb in 5 Nm Muffler 180 lb in 20 Nm Muffler Support Bracket 125 lb in 14 Nm Oil Dra...

Page 164: ... in 29 92 mm PTO Side Journal 1 1795 in 29 95 mm 1 178 in 29 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 216 in 30 88 mm 1 212 in 30 77 mm Exhaust Lobes 1 216 in 30 88 mm 1 212 in 30 77 mm CONNECTING ROD Crank Pin Bearing 1 250 in 31 75 mm 1 252 in 31 80 mm Piston Pin Bearing 6728 in 17 09 mm 6742 in 17 12 mm PISTO...

Page 165: ... in 6 Nm Carburetor to Cylinder Head 60 lb in 7 Nm Connecting Rod 100 lb in 11 Nm Crankcase Sump 90 lb in 10 Nm Cylinder Head 160 lb in 18 Nm Cylinder Head Plate 90 lb in 10 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 90 lb in 10 Nm Flywheel Nut 60 lb ft 80 Nm Fuel Tank Side 90 lb in 10 Nm Fuel Tank Top 40 lb in 5 Nm Governor Lever Nut 40 lb in 5 Nm Muffler To Cylinder Head 90 lb in ...

Page 166: ...26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6258 in 15 89 mm 6268 in 15 92 mm PISTON Piston Pin 6247 in 15 86 mm 6291 in 15...

Page 167: ...buretor Bowl Nut 90 lb in 10 Nm Connecting Rod 100 lb in 11 Nm Crankcase Sump 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Head Plate 90 lb in 10 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 90 lb in 10 Nm Flywheel Nut 60 lb ft 80 Nm Fuel Tank Side 90 lb in 10 Nm Fuel Tank Top 40 lb in 5 Nm Governor Lever Nut 40 lb in 5 Nm Muffler To Cylinder Head 90 lb in 10 Nm Oil Drain Pl...

Page 168: ...17 mm PTO Side Journal 1 0615 in 26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6258 in 15 89 mm 6268 in 15 92 mm PISTON Pisto...

Page 169: ...buretor Bowl Nut 90 lb in 10 Nm Connecting Rod 100 lb in 11 Nm Crankcase Sump 100 lb in 11 Nm Cylinder Head 220 lb in 25 Nm Cylinder Head Plate 90 lb in 10 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 90 lb in 10 Nm Flywheel Nut 60 lb ft 80 Nm Fuel Tank Side 90 lb in 10 Nm Fuel Tank Top 40 lb in 5 Nm Governor Lever Nut 40 lb in 5 Nm Muffler To Cylinder Head 90 lb in 10 Nm Oil Drain Pl...

Page 170: ...17 mm PTO Side Journal 1 0615 in 26 96 mm 1 060 in 26 92 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6258 in 15 89 mm 6268 in 15 92 mm PISTON Pisto...

Page 171: ... Connecting Rod 175 lb in 20 Nm Control Bracket 45 lb in 5 Nm Crankcase Sump 175 lb in 20 Nm Cylinder Head 240 lb in 27 Nm Cylinder Shield 30 lb in 3 Nm Exhaust Manifold Adapter 45 lb in 5 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 140 lb in 16 Nm Fuel Pump 90 lb in 10 Nm Fuel Tank 180 lb in 20 Nm Fuel Tank Bracket 180 lb in 20 Nm Governor Lever Nut 40 lb in 5 Nm Intake Manifold to Cylinder Hea...

Page 172: ... 91 mm 2 202 in 55 93 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm Exhaust Lobes 1 112 in 28 24 mm 1 098 in 27 89 mm CONNECTING ROD Crank Pin Bearing 1 500 in 38 10 mm 1 502 in 27 99 mm Piston Pin Bearing 8006 in 20 33 mm 802 in 20 37 mm COUNTERWEIGHT SYSTEM AVS Bearing Large End 2 207...

Page 173: ...olenoid 40 lb in 5 Nm Connecting Rod 150 lb in 17 Nm Control Bracket 30 lb in 3 Nm Crankcase Cover 220 lb in 25 Nm Cylinder Head 220 lb in 25 Nm Cylinder Shield 40 lb in 5 Nm Exhaust Manifold Adapter 165 lb in 19 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 140 lb in 16 Nm Fuel Pump 90 lb in 10 Nm Governor Lever Nut 40 lb in 5 Nm Intake Manifold to Cylinder Head 90 lb in 10 Nm Muffler 90 lb in 10...

Page 174: ... 91 mm 2 202 in 55 93 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 240 in 31 49 mm 1 234 in 31 34 mm Exhaust Lobes 1 240 in 31 49 mm 1 234 in 31 34 mm CONNECTING ROD Crank Pin Bearing 1 2505 in 31 76 mm 1 2525 in 31 81 mm Piston Pin Bearing 8006 in 20 33 mm 802 in 20 37 mm COUNTERWEIGHT SYSTEM Bearings 2 207 in 56 05 m...

Page 175: ...Nm Carburetor Solenoid 40 lb in 5 Nm Connecting Rod 150 lb in 17 Nm Control Bracket 30 lb in 3 Nm Crankcase Sump 220 lb in 25 Nm Cylinder Head 220 lb in 25 Nm Cylinder Shield 40 lb in 5 Nm Exhaust Manifold Adapter 165 lb in 19 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 140 lb in 16 Nm Fuel Pump 90 lb in 10 Nm Governor Lever Nut 40 lb in 5 Nm Intake Manifold to Cylinder Head 90 lb in 10 Nm Muffl...

Page 176: ...34 95 mm Eccentrics 2 2045 in 55 91 mm 2 202 in 55 93 mm CAMSHAFT Mag Side Journal 499 in 12 67 mm 498 in 12 65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 240 in 31 49 mm 1 234 in 31 34 mm Exhaust Lobes 1 240 in 31 49 mm 1 234 in 31 34 mm CONNECTING ROD Crank Pin Bearing 1 2505 in 31 76 mm 1 2525 in 31 81 mm Piston Pin Bearing 8006 in 20 33 mm 802 in 20 37 mm COUNTERWEIGHT ...

Page 177: ...id 40 lb in 5 Nm Connecting Rod 150 lb in 17 Nm Control Bracket 30 lb in 3 Nm Crankcase Sump 220 lb in 25 Nm Cylinder Head 220 lb in 25 Nm Cylinder Shield 40 lb in 5 Nm Exhaust Manifold Adapter 165 lb in 19 Nm Flywheel Nut 100 lb ft 135 Nm Flywheel Fan 140 lb in 16 Nm Fuel Pump 90 lb in 10 Nm Governor Lever Nut 40 lb in 5 Nm Intake Manifold to Cylinder Head 90 lb in 10 Nm Muffler 90 lb in 10 Nm Oi...

Page 178: ...65 mm PTO Side Journal 499 in 12 67 mm 498 in 12 65 mm Intake Lobes 1 240 in 31 49 mm 1 234 in 31 34 mm Exhaust Lobes 1 240 in 31 49 mm 1 234 in 31 34 mm CONNECTING ROD Crank Pin Bearing 1 100 in 37 06 mm 1 102 in 27 99 mm Piston Pin Bearing 6258 in 15 89 mm 6268 in 15 92 mm COUNTERWEIGHT SYSTEM Pivot Shaft Bore 1 100 in 37 06 mm 1 102 in 27 99 mm Counterweight Pin Bore 1 100 in 37 06 mm 1 102 in ...

Page 179: ...176 12 ...

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Briggs & Stratton 120000, Instruction Manual

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