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Briggs & Stratton 130G00, Repair Manual

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Briggs & Stratton 130G00 Repair Manual Download Page 78

Not for 

Reproduction

96

NOTE: A second hex flange screw to engine base also
captures blower housing, so do not install at this time.

40. Verify that flywheel and crankshaft tapers are free of

grease, oil, dust, and dirt. Verify that keyways are clean
and completely free of dirt and grit.

CAUTION

The edges of the crankshaft keyway are sharp. Wear
appropriate safety gloves and exercise care to avoid
hand injury.

41. Install key (C) into keyway on crankshaft taper.

42. Install flywheel (D) engaging keyway with installed key

on crankshaft taper. Verify that flywheel fits tightly
without wobbling.

43. Install flywheel fan (E) onto flywheel. Rotate flywheel

fan slightly to ensure that four pegs fully engage blind
holes in flywheel. See Figure 97.

97

98

44. Install starter cup (F). Be sure that extrusion on starter

cup engages blind hole in flywheel, while three holes
engage pegs on flywheel fan. See Figure 98.

45. Install flywheel nut (G). Hand tighten flywheel nut, so

that flywheel, flywheel fan, and starter cup remain fully
engaged.

46. See Figure 99. Obtain Strap Wrench (Part No. 19433),

torque wrench, and 21 mm socket. Proceed as follows:

A. Fit loop of strap around flywheel and tighten until

snug.

B. Pinch strap between heel of wrench and flywheel.

C. Holding tool down by the handle, tighten flywheel

nut as follows.

Flywheel Nut

Torque

Models

53-71 lb-ft (72.3-96 N-m)

130G00, 131G00,
13R200

54-59 lb-ft (73-80 N-m)

13U100, 13U200

D. Remove strap wrench from flywheel.

99

47. See

TOP END ASSEMBLY in this section.

72

7

Summary of Contents for 130G00

Page 1: ...N o t f o r R e p r o d u c t i o n ...

Page 2: ...N o t f o r R e p r o d u c t i o n ...

Page 3: ...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 However neither publication is a substitute for a recognized training program f...

Page 4: ... models MODEL 130G00 MODEL 131G00 MODEL 13R200 MODEL 13U100 MODEL 13U200 NOTE Some models have limited service parts Review the Illustrated Parts List for part availability before conducting any service work NOTE The images in this document are representative and may differ according to model ...

Page 5: ...N 5 DISASSEMBLE ENGINE TOP END DISASSEMBLY and then proceed to SECTION 6 SERVICE ENGINE SUBASSEMBLIES CYLINDER HEAD When cylinder head service is complete see SECTION 7 ASSEMBLE ENGINE TOP END ASSEMBLY Bottom End Service If servicing bottom end components such as the piston connecting rod crankshaft etc first see SECTION 5 DISASSEMBLE ENGINE TOP END DISASSEMBLY and then proceed to BOTTOM END DISAS...

Page 6: ...N o t f o r R e p r o d u c t i o n ...

Page 7: ...TION 2 SECTION 2 MAINTENANCE 3 SECTION 3 TROUBLESHOOTING SPECIAL TOOLS 4 SECTION 4 REMOVE EXTERNAL ASSEMBLIES 5 SECTION 5 DISASSEMBLE ENGINE 6 SECTION 6 SERVICE ENGINE SUBASSEMBLIES 7 SECTION 7 ASSEMBLE ENGINE 8 SECTION 8 INSTALL EXTERNAL ASSEMBLIES 9 SECTION 9 SPECIFICATIONS ...

Page 8: ...N o t f o r R e p r o d u c t i o n ...

Page 9: ...TY AND GENERAL INFORMATION SAFETY 4 Safety Alert Symbol and Signal Words 4 Hazard Symbols and Meanings 4 General Safety Messages 4 GENERAL INFORMATION 7 Engine Identification 7 Fuel Recommendations 7 High Altitude 7 Oil Recommendations 7 Storage 8 3 1 ...

Page 10: ...stand the section s of this manual that pertain to the job Follow all safety warnings Always use fresh gasoline Stale fuel can cause gum deposits in the carburetor and cause leakage flow restrictions or other problems Check fuel lines and fittings frequently for cracks or leaks and replace if necessary WARNING Before attempting to service this equipment read and understand this manual and the oper...

Page 11: ...sport move repair with fuel tank EMPTY or with fuel shutoff valve OFF Do not tip engine or equipment at angle which causes fuel to spill Disconnect spark plug wire When Storing Fuel or Equipment with Fuel In Tank Store away from furnaces stoves water heaters clothes dryers or other appliances that have pilot lights or other ignition source because they could ignite fuel vapors WARNING Starting eng...

Page 12: ...arking could cause fire or electric shock resulting in death or serious injury Unintentional start up could result in entanglement traumatic amputation or laceration Before performing adjustments or repairs Disconnect the spark plug wire and keep it away from the spark plug Disconnect battery at negative terminal only engines with electric start Use only correct tools Do not tamper with governor s...

Page 13: ...reased performance increased fuel consumption and increased emissions Contact a Briggs Stratton Authorized Service Dealer for high altitude adjustment information Operation of the engine at altitudes below 2 500 feet 762 meters with the high altitude adjustment is not recommended For Electronic Fuel Injection EFI engines no high altitude adjustment is necessary Oil Recommendations Oil Capacity See...

Page 14: ...r parts To keep fuel fresh use Briggs Stratton Advanced Formula Fuel Treatment Stabilizer available wherever Briggs Stratton genuine service parts are sold There is no need to drain gasoline from the engine if a fuel stabilizer is added according to instructions Run the engine for 2 minutes to circulate the stabilizer throughout the fuel system before storage If gasoline in the engine has not been...

Page 15: ... Filter and Pre Cleaner 11 Dual Element Oval Air Filter 12 Oil Bath Air Filter 12 Foam Low Mount Air Filter 13 Foam Large Panel Air Filter 13 Paper Air Filter 14 Clean Inspect Muffler and Spark Arrester 14 Change 6 1 Gear Reduction Oil If Equipped 15 Clean Gap Replace Spark Plug 15 Clean Replace In Tank Fuel Filter 16 Clean Carburetor Sediment Bowl 17 Clean Air Cooling System 17 Check Adjust Valve...

Page 16: ...a clean lint free cloth B NOTE Proceed to step 8 if only checking engine oil level 5 Remove oil drain plug s with sealing washer s at base of engine C and drain oil into an approved container 6 Install oil drain plug s with sealing washer s and tighten as follows Oil Drain Plug Torque Models 140 200 lb in 15 8 22 6 N m 130G00 131G00 13R200 248 266 lb in 28 30 N m 13U100 13U200 2 7 Using a funnel a...

Page 17: ...ush and a portable hand held vacuum C Gently scrape away stubborn accumulations of dirt and other deposits using a plastic putty knife or stiff bristle brush D Apply a light solvent to bristle brush to loosen and remove grit and oily residue if necessary 5 Verify that all combustible debris is removed from area around and behind muffler 6 Verify that governor link springs and controls move freely ...

Page 18: ...an water and allow to air dry completely 7 Carefully inspect foam pre cleaner and air filter cartridge Replace parts if they cannot be adequately cleaned or if any damage is observed 8 Install foam pre cleaner onto air filter cartridge 9 Install seal washer onto air cleaner base 4 10 Place air filter cartridge with foam pre cleaner onto air cleaner base Install wing nut but do not over tighten 11 ...

Page 19: ... of carburetor Inadequate precautions can result in engine damage 2 Remove retainer C and foam filter D from air cleaner cover 6 3 Gently wash foam filter in warm soapy water Thoroughly rinse with clean water Squeeze foam filter in a clean cloth until dry NOTE Use of pressurized air or solvents will damage foam filter 4 Carefully inspect foam filter Replace if it cannot be adequately cleaned or if...

Page 20: ...s using a plastic putty knife or stiff bristle brush D Apply a light solvent to bristle brush to loosen and remove grit and oily residue if necessary 3 Remove three hex flange screws to release wire guard or stamped guard from muffler 4 Inspect muffler for holes split seams cracked welds loose internal parts corrosion and other damage 5 Inspect muffler tube and mounting flange for cracked welds br...

Page 21: ...at a proper waste disposal or recycling center Clean Gap Replace Spark Plug NOTE Spark plugs have different thread lengths and heat ranges Always use the specified replacement spark plug or engine damage can occur NOTE Some localities require use of a special resistor type spark plug to suppress ignition noise If the engine was originally equipped with a resistor type spark plug be sure to use the...

Page 22: ...ld be required to retrieve it 9 See Figure 12 Squeeze tangs and move hose clamp F away from fuel filter fitting G 10 Remove hose H from fuel filter fitting For best results use Fuel Hose Remover Part No 19620 11 Using hex remove fuel filter fitting from fuel tank 12 Unthread fuel filter I and remove O ring J from fuel filter fitting 13 Inspect fuel filter for dirt and debris Clean or replace as ne...

Page 23: ... in approved containers and dispose of properly 1 Start and run engine until fuel tank is empty 2 See Figure 13 Position fuel valve A to OFF 3 Remove spark plug wire from spark plug terminal Secure spark plug wire to prevent unintentional contact with spark plug terminal 4 Remove sediment bowl B with O ring C from carburetor body 5 Thoroughly clean sediment bowl of sediment gum or varnish deposits...

Page 24: ...Thoroughly clean area around spark plug to keep dust and dirt out of the combustion chamber 3 Remove spark plug from cylinder head using the 5 8 inch Spark Plug Wrench Part No 19576S 4 Remove four hex flange screws to release valve cover 5 Move piston 1 4 inch 6 mm past Top Dead Center TDC of the compression stroke Proceed as follows A See Figure 14 While rotating flywheel end of crankshaft A by h...

Page 25: ... Models 0 004 0 006 in 0 10 0 15 mm 130G00 131G00 13R200 0 005 0 007 in 0 13 0 18 mm 13U100 13U200 9 Remove old gasket material from valve cover and cylinder head flanges Gasket material left on sealing surfaces will cause leaks 10 Install new valve cover gasket into valve cover 11 Start four hex flange screws to fasten valve cover to cylinder head Using a crosswise pattern alternately tighten scr...

Page 26: ...N o t f o r R e p r o d u c t i o n 20 2 ...

Page 27: ... p r o d u c t i o n SECTION 3 TROUBLESHOOTING SPECIAL TOOLS TROUBLESHOOTING 22 Check Ignition 22 Check Carburetion 23 Check Compression 23 Check Low Oil Sensor System 24 Check Breather Valve 24 SPECIAL TOOLS 25 21 3 ...

Page 28: ...ymptoms can be traced to one or more of the following Perform these checks in the order listed 1 Ignition 2 Carburetion 3 Compression Check Ignition 1 Move to step 2 if engine does not start If engine runs but misses move to step 9 Engine Does Not Start 2 Verify that engine oil level is within the cross hatch pattern on the dipstick 3 Obtain Ignition Tester Part No 19368 4 Remove spark plug wire f...

Page 29: ...buretor or intake manifold gaskets Gummy or dirty carburetor fuel filter fuel lines or fuel tank Carburetor float needle valve stuck closed NOTE To determine if the fuel is getting to the combustion chamber through the carburetor remove the spark plug and pour a small quantity of gasoline through the spark plug hole Install the spark plug and crank the engine If the engine fires a few times and th...

Page 30: ...ty is obtained Proceed to next step if meter reads infinity 7 See Figure 18 Connect one place wire connector between oil sensor module and oil sensor in crankcase F 8 Disconnect one place wire connector between oil sensor module and armature coil G 9 Start engine Verify that oil sensor module wire is not touching ground 10 Replace oil sensor module if engine starts If engine does not start check o...

Page 31: ...auge Part No 19485 8 Dial Bore Gauge Part No 19487 9 Leakdown Tester Part No 19545 10 Master Seat Cutter Kit Part No 19547 11 Spark Plug Wrench Part No 19576S 12 Digital Tachometer Hour Meter Part No 19598 13 Digital Multimeter Part No 19602 14 Dial Caliper Part No 19609 15 Fuel Hose Remover Part No 19620 16 Valve Lapping Compound Part No 94150 17 Carburetor Cleaner Part No 100041 18 Carburetor Cl...

Page 32: ...N o t f o r R e p r o d u c t i o n 26 3 ...

Page 33: ...28 Oil Bath Air Filter 28 Foam Low Mount Air Filter 29 Foam Large Panel Air Filter 29 Paper Air Filter 29 Starter Motor If Equipped 30 Fuel Tank 31 Governor Bracket Lever 32 Carburetor 33 Muffler 33 Rewind Starter 33 Blower Housing 34 Low Oil Sensor Module If Equipped 34 Armature 35 Gear Reduction Unit If Equipped 35 6 1 Gear Reduction Unit 35 2 1 Gear Reduction Unit 36 27 4 ...

Page 34: ...2 Remove wing nut C to release air filter cartridge D with foam pre cleaner E 21 3 Remove seal washer F from air cleaner base G 4 Remove plastic knob from throttle control lever 5 If equipped remove hex flange screw to release high oil fill tube flange from control panel trim 6 Remove three hex flange screws to release control panel trim from fuel tank Disengage control panel trim from slot in air...

Page 35: ...tuds Foam Low Mount Air Filter 1 See Figure 23 Remove two hex flange screws A to release air cleaner cover B 2 Remove retainer C and foam filter D from air cleaner cover 3 Remove two hex flange nuts to release air cleaner base E from carburetor mounting studs 4 Remove breather hose from port on air cleaner base 23 Foam Large Panel Air Filter 1 See Figure 24 Disengage two retaining clips A to relea...

Page 36: ...rom behind starter motor D Move to step 5 4 Remove red stator wire C ring terminal and flat washer from starter solenoid post 5 Disconnect yellow key switch wire terminal from starter solenoid black wire terminal D 6 If equipped remove low oil sensor module as follows A Disconnect one place wire connector E between oil sensor and oil sensor module B Disconnect one place wire connector F between oi...

Page 37: ...ttle control lever left to the FAST position and use a 8 mm socket with extension NOTE Exercise care to avoid dropping screw between engine and blower housing A dropped screw may be caught by the flywheel magnet where further disassembly would be required to retrieve it 3 Squeeze tangs and move hose clamp C away from fuel tank or in tank fuel filter fitting D 4 Remove hose E from fitting For best ...

Page 38: ...TE Do not remove spring clip from governor crank or it will drop into crankcase 4 Slowly slide carburetor down mounting studs until governor link G is inline with slot in throttle lever Remove governor link from hole in throttle lever NOTE Exercise care to avoid bending kinking or stretching link and springs 5 Remove opposite end of governor link from first hole in governor lever 6 Remove governor...

Page 39: ...pter gaskets 30 Muffler 1 See Figure 31 Remove two hex nuts A with lock washers B to release muffler C from studs 2 Remove and discard gasket D 31 Rewind Starter 1 See Figure 32 Remove three hex flange screws A to release rewind starter B from blower housing NOTE Note orientation of the rewind starter before removal Rewind starter may be installed in the 2 o clock 8 o clock 10 o clock or 12 o cloc...

Page 40: ...tch and armature 3 If equipped with rocker stop switch D pull blower housing away from crankcase just far enough to access stop switch spade terminals and proceed as follows A See Figure 34 Disconnect socket of red wire ring terminal stop switch ground from terminal 1 B Disconnect socket of armature remote magneto stop terminal wire from terminal 2 C If equipped disconnect socket of low oil sensor...

Page 41: ...l to move magnet B away from armature legs 2 Remove hex flange screws to release armature from crankcase 3 See Figure 36 Release remote magneto stop terminal wire from clip on flywheel guard and pull from between ribs at top of crankcase 37 Gear Reduction Unit If Equipped 6 1 Gear Reduction Unit 1 See Figure 38 Remove oil fill vent plug A with sealing washer from gear case cover B 2 Remove oil dra...

Page 42: ... See Figure 40 Remove five screws to release gear cover A from crankcase cover NOTE If gear cover sticks use a soft hammer to lightly tap area adjacent to two locating pins 6 o clock and 12 o clock positions 2 Remove gear cover gasket from locating pins 3 Remove two locating pins from crankcase cover flange and set aside 4 Remove hex flange screw B with flat washer C from end of crankshaft 40 5 Sl...

Page 43: ...N o t f o r R e p r o d u c t i o n SECTION 5 DISASSEMBLE ENGINE TOP END DISASSEMBLY 38 BOTTOM END DISASSEMBLY 40 37 5 ...

Page 44: ...N o t f o r R e p r o d u c t i o n TOP END DISASSEMBLY 41 38 5 ...

Page 45: ...the compression stroke Proceed as follows NOTE Disassembly with the valve train loaded can result in bent push rods A While rotating flywheel end of crankshaft by hand in the direction of engine rotation watch the rocker arms to determine the action of the valves After the exhaust valve closes the intake valve begins to open B When the intake valve closes so that both valves are closed with the ro...

Page 46: ...osen flywheel nut or thread damage may occur A Fit loop of strap around flywheel and tighten until snug B Pinch strap between heel of wrench and flywheel as shown C Holding tool down by the handle loosen flywheel nut using breaker bar and 21 mm socket D Remove strap wrench from flywheel 43 3 See Figure 42 Remove flywheel nut A from crankshaft 4 Remove starter cup B and flywheel fan C 5 Remove flyw...

Page 47: ...ng forcing screw in the same direction until flywheel is free H Remove puller tool 6 Remove flywheel nut and flywheel 44 45 46 7 If not equipped with stator move to step 8 If stator equipped proceed as follows A See Figure 46 Pull stator wires from between ribs and then through opening at top of crankcase A B Remove two hex flange screws B to release stator 8 See Figure 42 Remove hex flange screw ...

Page 48: ... of the camshaft lobes 16 Remove camshaft C from bearing bore in crankcase 17 Remove valve tappets from crankcase Tag each tappet as it is removed so that it can be installed in its original location when the engine is assembled 18 Rotate crankshaft until piston is at the bottom of its stroke 19 See Figure 49 Use a plastic scraper to carefully remove carbon ridge at top of cylinder bore NOTE Failu...

Page 49: ...necting rod and piston assembly from cylinder bore 23 Remove crankshaft from crankcase 24 See the following topics under SECTION 6 SERVICE ENGINE SUBASSEMBLIES PISTON AND CONNECTING ROD FLYWHEEL CRANKSHAFT AND CAMSHAFT CRANKCASE AND CRANKCASE COVER 43 5 ...

Page 50: ...N o t f o r R e p r o d u c t i o n 44 5 ...

Page 51: ...Rocker Arms 50 Carburetor and Muffler Studs 50 Assembly 51 PISTON AND CONNECTING ROD 53 Disassembly 53 Cleaning 53 Piston 53 Connecting Rod 54 Inspection 54 Piston and Pin 54 Piston Rings 55 Connecting Rod 55 Assembly 56 FLYWHEEL CRANKSHAFT AND CAMSHAFT 58 Cleaning 58 Inspection 58 Flywheel 58 Crankshaft 58 Camshaft 59 CRANKCASE AND CRANKCASE COVER 60 Disassembly 60 Crankcase 60 Governor Crank 60 ...

Page 52: ... 60 Cleaning 61 Inspection 61 Deglaze Recondition Cylinder Bore 62 Hone Resize Cylinder Bore 63 Clean Crankcase and Cylinder Bore 63 Assembly 64 Crankcase 64 MAG Bearing Oil Seal 64 Low Oil Sensor If Equipped 65 Governor Crank 65 Crankcase Cover 65 PTO Bearing Oil Seal 65 46 6 ...

Page 53: ...erial left on sealing surfaces will cause leaks 52 2 Remove all carbon deposits from combustion chamber and machined surfaces of cylinder head Exercise caution to avoid removing any metal material For best results use an air tool with a worn fine wire brush Scraping may result in scratches or nicks 3 To soften stubborn deposits soak the cylinder head in a suitable chemical solution or other carbon...

Page 54: ...iscoloration due to excessive heat Replace cylinder head if either of these conditions are found 6 Verify that breather hole and intake and exhaust ports are clean and open Valve Guides 1 Inspect external surface of valve guides for cracks particularly the combustion chamber side Replace the cylinder head if cracks are found 2 To verify cleanliness lightly hone bore using a suitable valve guide ho...

Page 55: ... valve guide and valve stem with clean engine oil D See A of Figure 55 From the bottom of the cylinder head insert the valve stem into the valve guide E Push on bottom of valve until it contacts the valve seat F Obtain the Valve Lapping Tool Part No 19258 G See B of Figure 55 Attach suction cup at end of tool to valve head Holding shank of tool between the palms of both hands oscillate the tool ap...

Page 56: ...t valve springs on a level surface and use a straightedge to check for proper squareness and equivalent height Too much height may correspond to a reduction in spring pressure which results in sluggish valve action Valve Spring Retainers 1 Inspect parts for rust pits or corrosion Replace as necessary 2 Inspect inside diameter for damage or excessive wear Center must be well defined without distort...

Page 57: ... in 4 7 N m 13U100 13U200 Assembly 1 See A of Figure 57 Install exhaust valve assembly as follows A Apply a suitable engine assembly lube to the valve stem NOTE If the valves were not tagged during disassembly remember that the exhaust valve always has the smaller valve face diameter 57 B From the bottom of the cylinder head insert the valve stem into the valve guide C To distribute the assembly l...

Page 58: ...ngine oil G Slide valve stem seal washer down valve stem until contact is made with machined surface of cylinder head Remove black electrical tape and discard NOTE Models 13U100 and 13U200 use a different style valve stem seal Lightly lubricate inside diameter and slide over valve stem to install H Install valve spring over the valve stem and valve guide I Set the valve spring retainer on top of t...

Page 59: ... groove Repeat action to move the rail into the top ring groove and then off the piston Repeat above step to remove the lower steel rail Cleaning Piston 1 Do not sand blast or glass bead blast piston Bead blasting rounds the ring lands and will result in high oil consumption and blow by of exhaust gases Blow by of exhaust gases contaminates the engine oil supply and reduces engine efficiency by we...

Page 60: ...king 60 3 See A of Figure 60 Using an inside micrometer or dial vernier caliper measure the piston pin bore diameter at two locations parallel and perpendicular to the crankshaft Replace the piston if either measurement is 0 711 inches 18 06 mm or more 4 See B of Figure 60 Using an outside micrometer measure the outside diameter of the piston pin at two locations parallel and perpendicular to the ...

Page 61: ... Models 0 044 in 1 11 mm or more 130G00 131G00 13R200 0 047 in 1 19 mm or more 13U100 13U200 G Repeat steps 1 B thru 1 D using rails of new oil control ring Do not use the ring if the end gaps are at the reject size shown below Oil Control Ring End Gap Reject Size Models 0 055 in 1 39 mm or more 130G00 131G00 13R200 0 053 in 1 34 mm or more 13U100 13U200 62 Connecting Rod 1 Inspect the connecting ...

Page 62: ...ock ring Verify that lock ring is fully seated in the groove CAUTION Always wear proper eye protection when installing piston pin lock ring Slippage can propel the ring with enough force to cause eye injury 5 Use compressed air to remove any dirt or dust that may have settled in the oil drain back holes and piston ring grooves 6 Apply clean engine oil to three piston ring grooves 7 Install the oil...

Page 63: ... the ring gap faces the piston crown 11 Rotate piston rings using the palms of both hands Verify that the rings rotate freely without sticking 66 12 Stagger the ring gaps around the piston Proceed as follows A See Figure 67 Rotate expander spring so that the gap is positioned at the front of the piston A B Rotate bottom oil rail to position the gap 90 from the gap in the expander spring B C Rotate...

Page 64: ...nkshaft end play shims A if present Count shims as they are removed to be sure of installing the correct number when the engine is assembled Inspect shims for tears holes or other damage Replace shims as necessary 2 Inspect keyway B for damage or distortion 3 Check camshaft gear C and governor gear D for worn cracked chipped or missing teeth 4 Inspect crankshaft for straightness DO NOT attempt to ...

Page 65: ...position and then verify that it returns to the fully CLOSED position when released 3 Check camshaft lobes C for scratching scoring or excessive wear 4 Check MAG side bearing journal D and PTO side bearing journal E for scratching or scoring 5 Using an outside micrometer measure the MAG side bearing journal and PTO side bearing journal diameters Replace the camshaft if either measurement is 0 548 ...

Page 66: ...ratching bearing bore during removal 71 2 With the outside facing upward support crankcase on wooden blocks on deck of arbor press 3 Place suitable bearing driver on outer race of bearing 4 Center bearing driver under ram 5 See Figure 72 Apply pressure to bearing driver until bearing is free Discard bearing 72 Crankcase Cover PTO Bearing Oil Seal 1 See Figure 73 Remove and discard oil seal from cr...

Page 67: ...ghts move freely 2 Using an inside micrometer check the crankcase and the crankcase cover camshaft bearing bores for wear Replace either part if measurement is 0 553 inches 14 05 mm or more 3 Check the crankcase for cracks or broken cooling fins Check the crankcase cover for cracks Replace parts as necessary 4 Check for scratches and nicks on all gasket sealing surfaces Use a fine tooth file to ca...

Page 68: ...top middle and bottom bore diameters either parallel A C E or perpendicular B D F to the crankshaft vary by more than 0 003 inches 0 08 mm then the cylinder is excessively worn or tapered F If cylinder is not worn beyond the service limits described under step 10 D and 10 E see DEGLAZE RECONDITION CYLINDER BORE G If cylinder is worn beyond the service limits described under step 10 D and 10 E see ...

Page 69: ... may be damaged 10 As cutting tension decreases stop hone and tighten adjusting knob 11 Frequently stop to examine the cylinder bore and take measurements NOTE Hone cylinder bore about 0 0005 inches 0 01 mm larger than the desired size to allow for contraction as the cylinder cools 12 Lubricate hone frequently to prevent build up on stones 13 Stop frequently to examine the cylinder bore and take m...

Page 70: ...TE Exercise care to avoid any contact with the governor gear Damage to the governor gear requires crankcase replacement 9 Inspect the bearing for damage or distortion 10 See Figure 79 Use your index finger to manually rotate the bearing in both directions Verify that bearing rotates freely without roughness sticking or unusual noise 11 With the outside facing upward support crankcase on wooden blo...

Page 71: ...as been removed 2 Manually rotate governor gear in both directions to verify that it moves freely without roughness or sticking 3 See Figure 82 Install governor cup with flat washer onto governor gear shaft A 82 83 4 From inside crankcase insert governor crank with flat washer thru hole at top of crankcase B 5 See Figure 83 Install spring clip so that the straight leg engages groove in governor cr...

Page 72: ...press NOTE Do not install oil seal into crankcase cover if engine is equipped with 2 1 or 6 1 gear reduction unit 12 Apply a thin film of clean engine oil to oil seal bore and OD of new oil seal 13 Verify that oil seal lip garter spring is not broken or missing 14 Place oil seal into bearing bore 15 Place suitable oil seal driver on outside edge of oil seal 16 Center oil seal driver under ram 84 8...

Page 73: ...N o t f o r R e p r o d u c t i o n SECTION 7 ASSEMBLE ENGINE BOTTOM END ASSEMBLY 68 TOP END ASSEMBLY 73 67 7 ...

Page 74: ...act with governor cup 11 Rotate crankshaft until crank pin journal is near the top of its stroke 12 Verify that piston ring end gaps are properly staggered See SECTION 6 SERVICE ENGINE SUBASSEMBLIES PISTON AND CONNECTING ROD ASSEMBLY step 12 87 88 13 Obtain the Piston Ring Compressor Part No 19070 and proceed as follows CAUTION The edges of the piston ring compressor are sharp Wear appropriate saf...

Page 75: ...rify clearance on each side of crankpin journal 18 Check operation of yoke on Mechanical Compression Release MCR mechanism on camshaft gear 90 NOTE Press yoke to the OPEN position and then verify that it returns to the CLOSED position when released 19 Thoroughly lubricate tappet bores and tappet shafts with clean engine oil 20 Install tappets into tappet bores Be sure to install each tappet in the...

Page 76: ... Step Torque Models 10 14 lb ft 13 6 19 N m 130G00 131G00 13R200 12 13 lb ft 16 17 N m 13U100 13U200 92 C Using the sequence shown final tighten screws as follows Third Step Torque Models 16 21 lb ft 21 5 28 3 N m 130G00 131G00 13R200 18 19 lb ft 24 26 N m 13U100 13U200 NOTE Failure to step torque screws in the proper sequence may result in gasket leaks or cause the crankcase cover to warp 34 Rota...

Page 77: ...e wires through opening A in crankcase B Start two hex flange screws B to fasten stator to crankcase Alternately tighten screws as follows Stator Screws Torque Models 80 110 lb in 9 12 4 N m 130G00 131G00 13R200 71 124 lb in 8 14 N m 13U100 13U200 C See Figure 95 Tightly pull stator wires through opening in crankcase and then keeping wires tight route between ribs at top of crankcase Push down on ...

Page 78: ...flywheel fan slightly to ensure that four pegs fully engage blind holes in flywheel See Figure 97 97 98 44 Install starter cup F Be sure that extrusion on starter cup engages blind hole in flywheel while three holes engage pegs on flywheel fan See Figure 98 45 Install flywheel nut G Hand tighten flywheel nut so that flywheel flywheel fan and starter cup remain fully engaged 46 See Figure 99 Obtain...

Page 79: ... as follows First Step Torque Models 5 7 lb ft 6 8 9 5 N m 130G00 131G00 13R200 6 7 lb ft 9 10 N m 13U100 13U200 B Using the sequence shown tighten screws as follows Second Step Torque Models 10 14 lb ft 13 6 19 N m 130G00 131G00 13R200 14 15 lb ft 19 20 N m 13U100 13U200 C Using the sequence shown final tighten screws as follows Third Step Torque Models 15 20 lb ft 20 3 27 1 N m 130G00 131G00 13R...

Page 80: ...s to fasten valve cover to cylinder head Using the sequence shown in Figure 104 alternately tighten screws as follows Valve Cover Screws Torque Models 70 90 lb in 7 9 10 2 N m 130G00 131G00 13R200 71 124 lb in 8 14 N m 13U100 13U200 104 16 Install spark plug into cylinder head and finger tighten until snug Using the 5 8 inch Spark Plug Wrench Part No 19576S tighten spark plug as follows Spark Plug...

Page 81: ...arter Motor If Equipped 86 Air Cleaner 87 Dual Element Oval Air Filter 87 Oil Bath Air Filter 87 Foam Low Mount Air Filter 88 Foam Large Panel Air Filter 88 Paper Air Filter 89 Gear Reduction Unit If Equipped 90 6 1 Gear Reduction Unit 90 2 1 Gear Reduction Unit 91 Final Instructions 92 Adjust Idle Speed 92 Adjust Top No Load Speed 92 Adjust Remote Choke Control Carburetor Mounted 93 Adjust Remote...

Page 82: ...ature legs H tight against gauge to set air gap as follows Armature Air Gap Models 0 010 0 014 in 0 25 0 35 mm 130G00 131G00 13R200 0 008 0 016 in 0 20 0 40 mm 13U100 13U200 107 7 See Figure 108 Tighten bottom hex flange screw I and then top hex flange screw J as follows Armature Screws Torque Models 80 110 lb in 9 12 4 N m 130G00 131G00 13R200 71 124 lb in 8 14 N m 13U100 13U200 8 Rotate flywheel...

Page 83: ...uard Tighten screw as follows Low Oil Sensor Module Screw Torque Models 30 80 lb in 3 4 9 N m 130G00 131G00 13R200 35 71 lb in 4 8 N m 13U100 13U200 3 Connect one place wire connector B between oil sensor module and either armature or rocker stop switch 4 Connect one place wire connector C between oil sensor module and oil sensor 109 110 Blower Housing 1 See Figure 112 If equipped with rocker stop...

Page 84: ...he rewind starter housing is in good condition without burrs or excessive wear D Inspect rope for cuts breaks or fraying If rope replacement is necessary see Replace Rewind Starter Rope 2 Orient rewind starter as noted before removal NOTE Rewind starter may be installed in the 2 o clock 8 o clock 10 o clock or 12 o clock positions 3 See Figure 113 Loosely install three hex flange screws A to faste...

Page 85: ...ing inspection and assembly instructions 1 See Figure 118 Install carburetor adapter gasket A carburetor adapter B and second carburetor adapter gasket C onto carburetor mounting studs Always use new carburetor adapter gaskets 2 Capture spark plug wire in slot of carburetor adapter 3 Install carburetor D and new carburetor gasket E onto carburetor mounting studs 4 If removed install hose with clam...

Page 86: ...art No s 100041 or 100042 NOTE Remove and set aside all rubber parts or those that have rubber components such as the needle valve O rings and fuel hose as these can be damaged by the carburetor cleaner 2 Inspect carburetor body and float bowl for sediment gum or varnish deposits Spray parts and then wipe away cleaning solution with a clean cloth Repeat step until clean cloth shows no evidence of ...

Page 87: ... N m 8 Install drain plug A with flat washer B into float bowl Tighten drain plug to 49 80 lb in 5 5 9 N m 9 Install choke shaft O Governor Bracket Lever NOTE Exercise care to avoid bending kinking or stretching link and springs 1 See Figure 120 Install governor link A into hole in throttle lever with the L hook end pointing down 2 Install opposite end of governor link into first hole in new gover...

Page 88: ...springs move freely without binding sticking or contacting blower housing Muffler 1 If equipped inspect spark arrester for dirt debris and carbon buildup Proceed as follows A Note orientation of spark arrester before removal B See Figure 123 If stamped guard A remove two screws B to release spark arrester C and muffler adapter D C If wire guard E remove single screw F to release spark arrester G D...

Page 89: ... guard screws as follows Muffler Stamped Guard Screws Torque Models 80 110 lb in 9 12 4 N m 130G00 131G00 13R200 27 44 lb in 3 5 N m 13U100 13U200 12 If equipped install spark arrester as follows A Install screening element into spark arrester B Orient spark arrester as noted before removal NOTE Spark arrestor is installed in either the 9 o clock or the optional 6 o clock position C If stamped gua...

Page 90: ...N o t f o r R e p r o d u c t i o n 123 84 8 ...

Page 91: ...lter fitting G Install fuel filter fitting into fuel tank Tighten fitting as follows Fuel Filter Fitting Torque Models 60 70 lb in 6 8 7 9 N m 130G00 131G00 13R200 62 71 lb in 7 8 N m 13U100 13U200 9 Place fuel tank onto engine 10 Install hex flange screw D to fasten fuel tank to crankcase flange Tighten screw as follows Fuel Tank Screw Torque Models 75 95 lb in 8 5 10 7 N m 130G00 131G00 13R200 7...

Page 92: ...lace wire connector G between oil sensor module and oil sensor 7 Route yellow key switch wire and orange key switch wire behind starter motor to area of starter solenoid 8 Connect yellow key switch wire terminal to starter solenoid black wire terminal H 9 If stator wires terminate in a ring terminal move to step 10 If stator wires terminate in a 2 place jumper wire connector proceed as follows NOT...

Page 93: ... dry completely 11 Carefully inspect foam pre cleaner and air filter cartridge Replace parts if they cannot be adequately cleaned or if any damage is observed 12 Install foam pre cleaner onto air filter cartridge 13 Inspect seal washer D for damage or general deterioration Replace if necessary 14 Install seal washer onto air cleaner base 15 Place air filter cartridge onto air cleaner base Install ...

Page 94: ...valve cover to port on air cleaner base 4 Gently wash foam filter B in warm soapy water Thoroughly rinse with clean water Squeeze foam filter in a clean cloth until dry NOTE Use of pressurized air or solvents will damage foam filter 5 Carefully inspect foam filter Replace if it cannot be adequately cleaned or if any damage is observed 6 Saturate foam filter with clean engine oil Gently squeeze foa...

Page 95: ...ts onto carburetor mounting studs Alternately tighten nuts to 30 50 lb in 3 4 5 7 N m 3 Install breather hose from valve cover to port on air cleaner base 4 Gently tap filter B on a hard surface to loosen dust and dirt Replace if it cannot be adequately cleaned or if any damage is observed 5 If equipped wash pre cleaner C in warm soapy water Thoroughly rinse with clean water and allow to air dry c...

Page 96: ...se cover 8 Alternately tighten screws to 175 225 lb in 19 8 25 4 N m using the sequence shown 132 9 Lubricate o ring seal with clean engine oil and install into groove in gear case 10 Align gear teeth and slide drive shaft assembly into gear case bearing 11 Slide gear case cover over drive shaft assembly 12 See Figure 133 Install four hex flange screws C to fasten gear case cover to gear case Alte...

Page 97: ... onto crankshaft 3 Install chain B on sprocket C and output shaft D 4 Slide sprocket over crankshaft while fitting output shaft into crankcase cover bore 5 Start hex flange screw E with flat washer F into crankshaft Tighten screw to 255 315 lb in 28 8 35 6 N m 6 Install two locating pins at the 6 o clock and 12 o clock positions on the crankcase cover flange 7 Place new gear cover gasket onto loca...

Page 98: ...achometer and Hour Meter Part No 19598 A Proceed as follows A Insert solder lug of white wire under engine or frame bolt for suitable ground B 137 B Tightly coil red wire over an insulated section of the spark plug wire using three to four turns C NOTE Keep wires away from hot or moving engine parts 2 Start and run engine for five minutes D 3 Move throttle control lever to SLOW E 4 Hold throttle l...

Page 99: ...g screw on remote choke mounting bracket 2 Move equipment choke control lever or knob to CHOKE 3 Move engine choke control lever to CHOKE 4 Move choke control wire and casing to close choke completely 5 Securely tighten casing clamp screw 6 Operate choke control to confirm proper operation Adjust Remote Throttle Control Governor Bracket Mounted NOTE Choose one of two locations for mounting the rem...

Page 100: ...N o t f o r R e p r o d u c t i o n 94 8 ...

Page 101: ... SECTION 9 SPECIFICATIONS MODELS 130G00 131G00 13R200 96 Engine Specifications 96 Torque Specifications 96 Standard Reject Sizes 97 MODELS 13U100 13U200 99 Engine Specifications 99 Torque Specifications 99 Standard Reject Sizes 100 95 9 ...

Page 102: ...rew Paper Air Filter 40 60 lb in 4 5 6 8 N m Air Cleaner Base to Governor Bracket Screw 30 50 lb in 3 4 5 7 N m Air Cleaner Base Nut 80 110 lb in 9 12 4 N m Armature Screw 60 110 lb in 6 8 12 4 N m Blower Housing Screw 50 70 lb in 5 7 7 9 N m Carburetor Stud 49 80 lb in 5 5 9 N m Carburetor Drain Plug 49 80 lb in 5 5 9 N m Carburetor Float Bowl Screw 49 80 lb in 5 5 9 N m Carburetor Sediment Bowl ...

Page 103: ... 8 22 6 N m Spark Plug 80 110 lb in 9 12 4 N m Stator Screw 80 110 lb in 9 12 4 N m Starter Motor Screw 30 40 lb in 3 4 4 5 N m Starter Solenoid Post Nut 70 90 lb in 7 9 10 2 N m Valve Cover Screw 175 225 lb in 19 8 25 4 N m 6 1 Gear Reduction Gear Case Screw 175 225 lb in 19 8 25 4 N m 6 1 Gear Reduction Gear Case Cover Screw 180 210 lb in 20 3 23 7 N m 6 1 Gear Reduction Gear Case Cover Plug 255...

Page 104: ...8 mm PTO Side Journal Diameter CONNECTING ROD 1 185 in 30 10 mm or more 1 183 in 30 05 mm Crank Pin Bearing Bore Diameter 0 711 in 18 06 mm or more 0 709 in 18 01 mm Piston Pin Bearing Bore Diameter PISTON 0 707 in 17 96 mm or less 0 708 in 17 99 mm Piston Pin Diameter 0 711 in 18 06 mm or more 0 709 in 18 01 mm Piston Pin Bore Diameter 0 040 in 1 01 mm or more 0 010 in 0 25 mm Top Compression Rin...

Page 105: ...r 71 124 lb in 8 14 N m Air Cleaner Base to Governor Bracket Screw 35 71 lb in 4 8 N m Air Cleaner Base Nut 71 124 lb in 8 14 N m Armature Screw 71 124 lb in 8 14 N m Blower Housing Screw 44 62 lb in 5 7 N m Carburetor Stud 49 80 lb in 5 5 9 N m Carburetor Drain Plug 49 80 lb in 5 5 9 N m Carburetor Sediment Bowl Nut 124 142 lb in 14 16 N m Connecting Rod Cap Screw 18 19 lb ft 24 26 N m Crankcase ...

Page 106: ... 80 mm Valve Seat Width 0 210 in 5 32 mm or less 0 216 in 5 47 mm Valve Stem Diameter 0 220 in 5 59 mm or more 0 217 in 5 51 mm Valve Guide Bore Diameter Exhaust 45 Valve Seat Angle 0 031 in 0 80 mm Valve Seat Width 0 208 in 5 28 mm or less 0 214 in 5 43 mm Valve Stem Diameter 0 220 in 5 59 mm or more 0 217 in 5 51 mm Valve Guide Bore Diameter CRANKCASE COVER 0 554 in 14 06 mm or more 0 552 in 14 ...

Page 107: ... in 1 19 mm or more 0 017 in 0 43 mm Middle Oil Wiper Ring End Gap 0 053 in 1 34 mm or more 0 018 in 0 45 mm Bottom Oil Control Ring End Gap 0 009 in 0 22 mm or more 0 002 in 0 04 mm Top Compression Ring Side Clearance Only top ring side clearance needs to be checked 101 9 ...

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