Robin America EH63V Service Manual Download Page 31 | Manualshive

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Summary of Contents for EH63V

Page 1: ......

Page 2: ...FT 7 4 7 CYLINDER HEAD 8 4 8 VALVE ARRANGEMENT 8 4 9 GOVERNOR SYSTEM 8 4 10 COOLING SYSTEM 9 4 11 LUBRICATION SYSTEM 9 4 12 IGNITION SYSTEM 9 4 13 CHARGING SYSTEM 9 4 14 CARBUREJOR 10 4 15 AIR CLEANER 10 4 16 FUEL PUMP 10 4 17 SECTIONALVIEW OF ENGINE 11 5 DISASSEMBLY AND REASSEMBLY 13 5 1 PREPARATIONS AND SUGGESTIONS 13 5 2 SPECIALTOOLS 13 5 3 DISASSEMBLY PROCEDURES 14 5 4 REASSEMBLY PROCEDURES 27...

Page 3: ...54 10 5 ROUGH IDLING 55 10 6 HIGH ENGINE OIL CONSUMPTION 55 10 7 HIGH FUEL CONSUMPTION 56 10 8 DETONATION 56 10 9 ENGINE MISFIRE 57 11 INSTALLATION 58 11 1 INSTALLING 58 11 2 VENTlLATlON 58 11 3 EXHAUST GAS DISCHARGE 58 11 4 POWER TRANSMISSION TO DRIVEN MACHINES 58 12 SERVICE DATA 59 12 1 CLEARANCE DATA AND LIMITS 59 12 2TORQUE SPECIFICATIONS 65 12 3OIL GRADE CHART 66 13 MAINTENANCEAND STORAGE 67 ...

Page 4: ... 3 15 x 2 56 in 653 cm3 39 8 cu in Overhead Valve OHV Forced Air Cooling Counterclockwiseas viewed fromP T O shaft side 45 6 N rn 4 65 kgfm 2500r p m 43 3 N rn 4 41 kgf m 2000r p m 16 4 kW 22 0 HP 3600r p m 13 4 kW 18 0 HP 3600 r p m 8 3 Forced Lubricationwith Trochoid Pump Automobile Engine OilSAE 20 30 or 1OW 30 ClassSE or higher 2 0 liters 0 53 U S gal Horizontal Draft FloatType Automobile Unle...

Page 5: ...d led under the cmditionthat A new engine maynot produce full maximum output while its moving parts are still not broken in NOTE Power curves shown in the following charts are made in conformity with SAE internal combustion engine standard test code J1349 2 2MAXIMUM TORQUE The maximum torque isthe torque at the output shaft when the engine is producing maximum output at certain revolution 2 ...

Page 6: ...2 3 PERFORMANCE CURVES EH63V 15 20 11 t 10 13 4 5 6 7 MAXIMUM TORQUE I I MAXIMUM HORSEPOWER I t I N m kgf m 45 4 59 t 35 3 57 2000 2400 2800 3200 3600 SPEED r p m 3 ...

Page 7: ...EH65V 15 20 1 10 13 4 5 6 7 X 1 MAXIMUM TORQUE I I MAXIMUM HORSEPOWER I I I 2000 2400 2800 3200 3600 SPEED r p m N m W 3 0 K 35 3 57 0 F 4 ...

Page 8: ...steel crankshaft and high loading direct supporting aluminum bearing offer high durability and full pressure lubrication system with trochoid type oil pump and large capacity air cleaner with dual elements enhance the reliability The effective combustion chamber shapeand the preciselytuned intake and exhaust valve system enhance the low exhaust emission and ensure the engine characteristics of hig...

Page 9: ...lded into the aluminum casting The crankcase has a mounting surface on the out put shaft side where the main bearing coveris attached 4 2 MAIN BEARINGCOVER Fig 4 1 The main bearing cover is an aluminum die cast ing whichis mounted on the output shaft side o f the crankcase Itis easy to inspect inside o f the engine after re moving the main bearing cover Fig 4 2 4 3 CRANKSHAR The crankshaft is forg...

Page 10: ...e top ringis barrel face and the second ring has a tapered face The oil ringis designed for better sealing and less oil consumption in combination with3 pieces TOP RING BARREL TAPER RING RING RING O I L COMBINATION Fig 4 5 4 6 CAMSHAFT The camshaft is made of special cast iron and camshaft gears are casted together in one piece Each 2 cam robs are provided for intake and ex haust valves correspond...

Page 11: ...n leadcool ing airto the exhaust valve area for the optimum cooling Hard alloyvalve seats are moldedin the cylinder head and stellite is fused to theexhaust valve face 4 9 GOVERNOR SYSTEM Fig 4 7 EXHAUSTVALVE INTAKEVALVE Fig 4 8 The governor is a centrifugal flyweight type which ensures constant operation at the selected speed against load variations The governor gear with governor weightsis in st...

Page 12: ...vers pressurized engine oil through the full flow typeoil filter to the journal and pin por tions o f crankshaft and camshaft 4 12 IGNITIONSYSTEM The ignition system is a transistor controlled mag neto system which consists of a flywheel andan ignition coil with a built in transistor installed onto the crankcase This systemhas an automatic ignition timing ad vance characteristic for easy starting ...

Page 13: ...noid valve is providedto prevent en gine running on when the key switch is turned to Off 4 15 AIR CLEANER Air cleaner is a heavy dutytype with adual ele ment system the primary one is an urethane foam semi wet and secondary one i s a dry type pa per element 4 16 FUEL PUMP The engine is equipped with a diaphragm type fuel pump which is operated by the crankcasein side vacuum pressure CLEANER COVER ...

Page 14: ...4 17 SECTIONAL VIEW OF ENGINE otiPUMP CRANKSHAFT Fig 4 15 CAMSHAFT 11 ...

Page 15: ...OIL PRESSURESWITCH FUEL PUMP CRANKSHAFT PISTON RING CARBURETOR ROCKER COVER ELECTRIC SPARK PLUG CYLINDER INTAKE AND STARTER HEAD EXHAUST Fig 4 16 12 ...

Page 16: ...dy to keep disassembled parts by group To prevent losing and misplacing temporarily assemble each group of disassembled parts Carefully handle disassembled parts and clean them with washing oil if necessary Use the correcttools inthe correctway 5 2 SPECIALTOOLS No Special Tool is needed for disassembling and reassembling the engine For pulling off the flywheel universaltype puller being popular in...

Page 17: ...5 3 DISASSEMBLY PROCEDURES w Step Fasteners Remarks and procedures Partsto remove Engine oil drain located on both sides of crankcase 1 Drain engine oil by removing plugs OIL DRAIN Fig 5 2 14 ...

Page 18: ...arks and procedures Parts to remove 2 Air cleaner cover and elements Remove breather pipe from 1 M6 nut 2 pcs cylinder head 3 Air cleaner base CLEANER COVER BREATHER PIPE Fig 5 4 CLEANER BASE GASKET cleaner _ Fig 5 3 15 ...

Page 19: ...Fasteners 1 I I I I I I I 1 1 1 4 IFuel pump bracket IRemove pulse pipe and fuel pipe M6x14 1 pce M6x28 1 pce I 5 Rotating screen and Blower housing M4x20 4 pcs M6x14 6 pcs M4 SCREW AND WASHER 4 pcs PULSE PIPE 4R T U I FUEL FILTER I Fig 5 5 16 ...

Page 20: ...ontrol bracket INSULATOR SPACER M6 NUT 1 pce GOVERNOR M5 BOLT AND WASHER 1 pce CHOKE LEVER FLANGE BOLT CHOKE CONTROL 1 pce ROD LE M5 BOLT AND WASHER 1 pce RETURN SPRlN I ROD SPRING I I L SPEED CONTROL LEVER M6 FLANGE NUT 1 pce i 3 BRACKET speed control M5 NUT 1 pce J P M5B0LT 1 1 pce M6 FLANGE BOLT 1 pce 7 I GOVERNOR SPRING M5 NUT 1 pce GOVERNOR ROD M5 BOLT 1 pce I 17 ...

Page 21: ...e fixing bands washer 4 pcs 2 Remove ignition coil M6x30 bolt coil 9 IIntake manifold M8 flange nut I4pcs I I I 10 Flywheel Remove flywheel from crankshaft by spring washer using puller M I8 nut washer M6 BOLT AND WASHER 4 pcs SPRING WASHER M6 BOLT AND BLOWER UNIT Fig 5 8 M6 BOLT AND WASHER 2 pcs IGNITIONCOIL SPARK PLUG C A P g d 1 Fig 5 7 Fig 5 9 18 ...

Page 22: ...ners Remarks and procedures Parts to remove M6x18 2 pcs 11 Regulator Cylinder baffles 1 2 3 4 M6x12 6 pcs to IGNITIONCOIL to IGNITION COIL FLANGE BOLT 4 pcs CYLINDER BAFFLE5 FLANGEBOLT 2 pcs CYLINDER BAFFLE1 Fig 5 10 19 ...

Page 23: ...Step M8x65 2 pcs Electric starter 13 Fasteners Remarks andprocedures Parts to remove 14 M5x20 4pcs Charge coil 15 NGK BPGES or BPRGES Spark plug I SPARK PLUG Fig 5 1I 20 ...

Page 24: ...on each cylinder head PIVOT BOLT pivot 2 pcs M6 NUT 2 pcs GUIDE PLATE SUPPORT blower housing DOWEL PIN 2pcs I M6 FLANGEBOLT 2 pcs I I I A LIFTING EYE 1 M10 FLANGE I BOLT 4pcs M10 FL BOLT LIFTING EYE2 M6 FLANGE ROCKER GASKET COVER rocker cover cvlinder head 1 DOWEL PIN 2 pcs GASKET cylinder head 2 GUIDE PLATE CYLINDER HEAD2 M10 FLANGE BOLT 4 pcs PUSH ROD BOLT pivot 2 pcs GASKET rocker ROCKER ARM RO...

Page 25: ...Step Fasteners Remarksand procedures Parts to remove Intake exhaust valves 18 Breather plate Breather cover EXHAUST VALVE Fig 5 13 22 ...

Page 26: ...l filter Oil pressure switch Oil relief spring ball Take out key from PTO shaft edge not to damage oil seal by key groove M8x75 3 pcs Wrap PTO shaft with polyvinyl tape M8x44 7 pcs Fig 5 16 GOVERNOR GEAR SHAFT M8 FLANGE MAIN BEARING SHAFT oil pump OUTER ROTOR OIL PUMP COVER fig 5 75 23 ...

Page 27: ...Step Fasteners Remarksand procedures Parts to remove Camshaft and tappet Mate themarkings both on 20 crankshaft gear andcamshaft gear and then takeout camshaft r Fig 5 18 h i p 9 TAPPET Fig 5 17 24 ...

Page 28: ...ts 2 Take out connecting rod cap M8 4 pcs 3 Push the connecting rod upwards and take out along with piston Put the markingof original position onto each piston ring clip piston pin connecting rod and cap for reassembly 1 Remove key from crankshaft 2 Remove crankshaft tapping at the flywheel endusing plastic hammer L CONNECTING CLIP WOODRUFF KEY I m CRANKSHAFT SPACER S e l e c t 1 piece only Fig 5 ...

Page 29: ...tep Fasteners Remarksand procedures Parts to remove Crankcase Leaf valve 23 Governor levershaft CRANKCASE 7 LEAF VALVE RETAINER PLATE M4 SCREW AND WASHER 2 pcs I SNAP PIN GOVERNOR SHAFT LEVER Fig 5 21 26 ...

Page 30: ...aged Apply oil to the lip before reassembly 4 Replace all the gaskets with new ones 5 Replace keys pins bolts nuts etc if necessary 6 Torque bolts and nutsto specification referringto the TORQUESPECIFICATIONS 7 Apply oilto rotating and sliding portions 8 Check and adjust clearances and end plays where specified in this manual 5 4 2 Pre assembly A CRANKCASE 1 Fit governor lever shaft with snap pin ...

Page 31: ...efer to SERVICE DATA for clearance specifications If exceeds draw valve guides out and press new guides in After replacing valves and guides lap valves in place until a uniform ring shows around the face of thevalve 1 Attach oil seal both ontointake and exhaust valveguide 2 Apply oilto valve spring and valve stem Place cylinder head on flat tableand install valvespring valve and spring retainer SP...

Page 32: ...ring with punched mark beside the gap face upward Top ring canbe fit either way As for oil ring rails should be placed on and belowthe expander 2 Apply enough oilto small end of connecting rod and piston pin and fix connecting rod to piston with piston pin 3 Use clips on the both side of the piston pin to secure piston pin in position TOP RING BARREL TAPER RING RING RING OIL COMBINATION Fig 5 25 2...

Page 33: ...I b 4 Tighten oil drain plugs on bothside of main bearingcover GOVERNOR SLEEVE 7 GOVERNOR GEAR q O I L PUMP FILTER WASHER OIL PRESSURE OIL DRAIN PLUG MAIN BEARING RETAINER PLATE Fig 5 26 5 4 3 Reassembly 1 CRANKSHAFT 1 Install crankshafton crankcase wrapping the key way with polyvinyl tape to avoid damage to oil seal Note Apply enough oil to bearing portion o f crankcase For easy installation put ...

Page 34: ...rtion o f crankshaft 3 Set connecting rod cap to connecting rod with the alignment marks mated and the clinching portion clinched Tighten bolts by the speci fied torque Tightening Torque 22 1 27 0 N m 225 275 kg cm 16 3 19 9ft lb 4 Check forfree movement of piston and con necting rodby turning crankshaftslowly 3 TAPPFT and CAMSHAFT 1 Apply oil to tappets and install intheir original position Pushi...

Page 35: ...he height B Fromthe mating surface to the crankgear B 0 0 A 0 36 B SIDE CLEARANCE mrn SIDE CLEARANCE 0 2 mm THICKNESS OF CRANKSHAFTSHIM rnm A O O14 B SIDE CLEARANCE in SIDE CLEARANCE 0 008 in THICKNESSOF CRANKSHAR SHIM in Following are available spacer shims T 0 6 mm 0 024 in SPACER SHIMS T 0 8 mm 0 031 in T 1 0 mm 0 039 in Table 5 1 I MAIN SPACER with gasket tightened 3 CRANKCASE READING I Fig 5 ...

Page 36: ...b 1 NOTE Before installing main bearing cover be sureto check the installation of governor lever shaft oil relief valve and oil pump filter in position Tap cover witha soft hammer until tacthing the crankcase matingsurface engaging with governor gear and camshaftgear properly Rotate crankshaft slowly to check for smooth operation and side clearance 6 O I L PUMP and COVER 1 Apply oil to inner and o...

Page 37: ...orque Tightening torque 1 st step 2 nd step I Final Step 9 8N r n 24 6 30 4 ft Ib 14 5 ft Ib 7 2ft Ib 340 420 kg crn 200kg crn 100kg mcrn 33 3 41 2 N m 19 6 N rn 8 ROCKER ARMS AND PUSH RODS I Insert push rods into crankcase Put push rod tip in the hollow of tappet top 2 Apply oil to rocker arms and assemblethem to cylinder head using pivot and nut GUIDE PLATE ROCKER ARM b z z sE z m M6 NUT 2 pcs F...

Page 38: ...cker arm and valve mark T of flywheel with the mark 1 of 1 cylinder head stem end and then tighten the nut by the specified torque Valve Clearance 0 085 0 115 mm Cold condition 0 0033 0 0045 in Tightening Torque 7 8 9 8 N rn 80 100 kg cm 5 8 7 2 ft lb I C K N T G A U G 3 Adjust valve clearance of 2cylinder sidein the same manner 4 Rotate crankshaft several times and be sure to check valve clearanc...

Page 39: ...valve opens outside 30 50 kg cm Note Never tightenthe bolts over the speci fied torque or gasket is damaged and cut Replace gaskets with new ones if they are torn or damaged 12 SPARK PLUG Install sparkplug to each cylinder head Spark plug NGK BPGES or BPRGES I GASKET breather plate GASKET breather piate M6FLANGE BREATHERCOVER BOLT 2 pcs Fig 5 37 Tightening Torque Newplug 11 8 14 7N m 120 150kg cm ...

Page 40: ...ocated at 5 o clock position lightening Torque 1 5 3 4 N m 15 35 kg cm 1 1 2 5 ft I b 14 ELECTRIC STARTER Install electricstarter Tightening Torque 16 7 18 6 N m 170 190 kg cm 12 3 13 7 ft Ib CHARGE CPlL ELECTRIC STARTER M8 FLANGE BOLT 2 pcs Fig 5 38 37 ...

Page 41: ...R HOUSING Install oil filler andsupport blower housing 16 CYLINDER BAFFLE Attach cylinder baffle I 2 3and 4 17 REGULATOR Attach regulatorto cylinder baffle M6 FLANGE BOLT 4 pcs 7 7 CYLINDER BAFFLE5 A Fig 5 39 38 M6 FLANGE BOLT 2 pcs ...

Page 42: ...ke manifold Tightening Torque 16 7 18 6 N m 170 I90kg cm 12 3 13 7 ft Ib 20 IGNITIONCOIL Temporallyfit ignition coilto crankcase Adjust airgap between ignitioncoil and flywheel using a thickness gauge and tighten bolts Ignition coil air gap 0 3 0 5 mm 0 012 0 020 in Torque 6 9 8 8 N m 70 90 kg cm 5 1 6 5 ft Ib Connect wiring from stop diode to the primary terminal o f ignition coil 21 CARBURETOR S...

Page 43: ... 23 SPEED CONTROLLEVER and CHOKE LEVER Attach governor spring between governor lever and speed control lever as shown in the illustration Attach chock control rod between carburetor chock lever and chock control lever Fig 5 41 i I I CHOKE M5 BOLTAND I G E R N O R M5 NUT 1 pee GOVERNORROD SPRING M5 BOLT 1 pce Fig 5 42 40 CONTROL RODSPRING M6 FLANGE LEVER NUT 1 pce M6 FLANGE BOLT 1 pce ...

Page 44: ...senthe nut to allow the speed controlle ver to move freely I U Fig 5 43 25 BLOWER HOUSING Attach blower housingto crankcase 26 FUELPUMP Install fuel pump onto 2cylinder baffle Connect fuel pipe between carburetor and fuel pump FUEL INLET N E L FILTER 27 AIR CLEANER 1 Connect breather pipe to air cleaner base 2 Fit air cleaner base onto carburetor 3 Connect breather pipeto 1cylinder head 4 Set air ...

Page 45: ...nstall oil filter by tighten ing about 314 turns after attaching main bearing cover surface lightening Torque About 12 3 N m About 125 kg cm About 9 0 ft Ib 30 FUEL PUMP PLUSE PIPE Connect fuel pipe between fuel pump and crank case nipple Fig 5 46 0 RING Fig 5 47 A 31 FINAL CHECK Be sure to check loosen bolts and nuts and also electric wiring connections 42 ...

Page 46: ... connecting rod should be thoroughly RUN IN before being put back into service Good bearing sur faces and runningclearances between the various parts can only be established by operating the engine under reduced speed and loads for a short period of time I Load I I I EH63V I EH65V I Time I Engine Speed I Step 1 Step 2 10 min 2 500 rpm No Load 10 min 3 600 rpm No Load Step 3 10 min 3 000 rprn No Lo...

Page 47: ...remely easy startsand stable high performance at oper ating speedby advancing the ignition timing to the most suitable point Ignition liming Control Circuit Automatic Advancing Control Circuit fig 6 1 a ELECTRONIC ADVANCINGFLYWHEEL B T D c MAGNETO SYSTEM 26 5O t 500 1000 2000 3000 r p rn ENGINE REVOLUTION Fig 6 1 b BASIC THEORY 1 Revolution of the flywheel generates electricity on the primary side...

Page 48: ...e advancing control circuit operates at the ignitiontiming to run the base currentISto turn the signal transistor B ON allowing the current 11to bypass as current 16 At this moment the power transistor turns OFF and the currentL is abruptly shut resulting inthe high voltage generated in the secondary coil which produces sparks at the spark plug The operating timing of the advancing control circuit...

Page 49: ...elief valve after discharging from oil pump Through the cartridge type oil filter the engine oil is provided onto the rotating portionssuch as journal and pin portion of crankshaft and camshaft The splashed engineoil is provided to the cylinder piston cylinder head valve system pin portionsof crankshaft camshaft etc The by pass valveis incorporated into the cartridge type oil filter In case that t...

Page 50: ...8 CARBURETOR 8 1 OPERATIONAND FUNCTION w I 1 1 c u m U Fig 8 1 47 ...

Page 51: ... supplied to the combusion chamber 8 1 4 CHOKE The chokeis used for easy start when engine is cold When the starteris operated with a choke valve fully closed the negative pressure applied to the main nozzle increases and draws much fuel accordingly thus easily start up the engine 8 1 5 ACCELERATOR PUMP SYSTEM When the throttle is opened rapidly for acceleration air flow and manifold vacuum change...

Page 52: ... 16 17 18 19 20 21 22 23 24 25 26 2 7 28 Q 8 2 Choke arm return spring 29 Round machine screw Choke lever ring 30 Solenoid valve Ass y Choke collar 31 Vaccum hose Throttle valve 32 Fuel hose Screw valve set 33 Nylon band Choke valve 3 4 Jet Needle compl 35 Float chamber Ass y Expansion plug 36 Cover compl Air filter 37 Spring Filter choke shaft 38 DiaphragmAss y Mainjet 39 Screw Gasket 40 Choke va...

Page 53: ...TION ANDFUNCTION When key switch is turned ON lower electric current M flowsthrough coil of magnetic switch and the coil isexcited The plungeris pulled and higher current S flows through electric starter When electric starter is operated pinion gear is pushed out bythe shift lever The pinion gearis engaged with ring gear and flywheel and crankshaft are rotated M I I S I 1 I I I I I BATTERY I START...

Page 54: ...set 5 YokeAss y 6 Rear cover Ass y 7 Starter metal 8 Brush holderAss y 9 Brush 10 Brush set 11 Brush spring 12 PinionAss y 13 Gear case Ass y 14 Starter metal Fig 9 3 15 Gear case metalcover 16 Dust cover kit 17 Shift leverkit 18 Magnetic switch Ass y 19 Through bolt 20 Bolt 21 M terminal cover 51 ...

Page 55: ...iono f key switch wiring motor Replace 2 Wiring discontinuity between key switch and starter Check repair or replace I I I I 3 Wiring discontinuity between battery and starter motor I Replace I I I I I 1 Electric starter does not operate Check cleanor replace 5 Poor connection of battery terminal 4 Improper battery low capacity or discharged battery Chargeor replace battery 6 Starter magnetic swit...

Page 56: ...nd flywheel 1 Nofuel in fuel tank 2 Fuel pump clogged 3 Fuel hose cloggedor pinched 4 Air mixing into fuel lines Clean Replace Repair or replace Adjust Refill Clean Clean or replace Check and adjust connecting portion 5 Improper gasoline or water infiltration Replace 6 Carburetor Overflow Adjust Clogged or damaged Check and adjust Improper operationof throttle valve Disassembly and clean 7 Poor co...

Page 57: ...xing into fuel lines 5 Improper gasolineor water infiltration 1 Air cleaner clogged 2 Throttle valve faulty Remedy Retighten or replace gasket Retightenor replace gasket Replace Repairor replace Repair or replace Repair or replace Adjust Replace Replace Adjust Replace Disassembly and clean Disassembly and clean Clean or replace Check and adjust connecting portion Replace Clean or replace Repair or...

Page 58: ...ide Replace 1 1 Weak ignition spark system 1 Check and replace spark plug 10 6 HtGH ENGINE OIL CONSUMPTION Phenomenon I Possible causes I Remedy I 1 Oil leakage 2 Oil dilution I 1 Loosen drain plug I Tighten I I 2 Drain plug gasket damaged I Replace I 3 Incorrect oil filter frtting Tighten 4 Loosen main bearing cover bolts Repair Repair or replace 6 Breather faulty Adjust oil level 5 High oil leve...

Page 59: ... Valve system Possiblecauses 1 Poor connectionof ignition system wirings 2 Improper or damaged sparkplug 1 Lean or richaidfuel mixture 2 Carburetor damaged 3 Fuel lines clogged or damaged 4 Air mixing from connecting portion of air intake system 1 Catbon deposit in combustion chamber 2 Cylinder head gasket faulty blow by 1 Improper valve clearance 2 Valve heat deterioration 3 Valve spring deterior...

Page 60: ...ition system wirings 1 Lean or rich aidfuel mixture 2 Carburetor clogged 3 Improper idling adjustment of carburetor 4 Improper gasolineor water infiltration 2 Fuel system Check and connect properly Disassemblyand repair Disassemblyand repair Adjust Replace 1 Valve heat deteriorationor improper valve adjustment Adjust or replace 3 Engine core components 2 Valve spring deterioration Replace I3 LOW c...

Page 61: ...engine to prevent recirculation of he hot air used for engine cooling and temperature rise of the machine Keepthe engine room temperature below 50 Ceven in the hottest period of the year 11 3 EXHAUST n Exhaust gasis noxious When operating the engine indoors be sure to discharge the exhaust gas outdoors if a long exhaust pipe is used in such a case the internal resistance increases causing loss of ...

Page 62: ...ATAAND LIMITS ITEM CYLINDER HEAD Flatness Valve seat contact width Valve guide inside dia IN EX Unit mm in EH63V 65V STD 0 05or less 0 002or less 0 7 1 0 0 028 0 039 6 035 6 053 0 2376 0 2383 Limit 0 1 0 004 2 0 0 079 6 15 0 242 c 59 ...

Page 63: ...ring STD 1 s t o s 2nd o s STD EH63V 65V 80 000 8 0 0 19 3 1496 3 1504 80 250 80 269 3 159 3 160 80 500 8 0 5 19 3 169 3 170 0 01 0 004 0 0 15 0 0006 79 968 79 988 3 148 3 149 80 218 80 238 3 158 3 159 80 468 80 488 3 168 3 169 Limit T o be rebored when he difference between nax and min o f liameter reached to 1 1 0 004 Ditto 79 878 3 145 80 128 3 155 80 378 3 1 64 ...

Page 64: ... ring end gap 2nd Oil ring TOP 2nd Oil ring STD 0 05 0 0 9 0 0002 0 0035 0 03 0 07 0 0012 0 0028 0 057 0 175 0 0022 0 0069 20 989 21 002 0 8263 0 8269 2 0 9 9 1 2 1 OOO 0 8264 0 8268 0 012 0 051 0 0005 0 0020 0 2 0 4 0 0079 0 0157 0 2 0 7 0 0079 0 0276 Limit 0 15 0 006 0 15 0 006 0 15 0 006 21 035 0 8281 20 960 0 8251 0 25 0 0098 1 5 0 0591 1 5 0 0591 61 ...

Page 65: ...ce CRANKSHAFT Journal dia Unit rnm in EH63V 165V STD 39 000 39 016 1 5354 1 5361 0 030 0 060 0 0012 0 0024 21 010 21 023 0 8272 0 8277 0 010 0 032 0 0004 0 0013 0 1 0 4 0 0039 0 0157 30 956 30 970 1 5337 1 5343 D l 44 984 45 000 1 i7102 1 77165 D2 44 984 45 00 1 77102 1 771 65 Limit 39 100 1 5394 0 2 0 0079 21 080 0 8299 0 12 0 0047 1 0 0 0394 38 90 1 5315 62 ...

Page 66: ...ve guide Valve clearance f IN E x IN w lN E X cold EH63V 65V STD 3 6 1 3 6 3 1 4213 1 4291 19 967 19 980 0 786l 0 7866 5 97 0 5 985 0 2350 0 2 3 5 6 5 960 5 975 0 2346 02352 0 050 0 0 8 3 0 0022 0 0033 0 060 0 093 0 0024 0 0037 Limit 35 95 1 4 1 54 19 950 0 7854 5 8 5 0 2303 5 85 0 2303 0 3 0 0 0 1 18 0 3 0 0 0 1 18 0 085 0 115 0 0034 0 0045 63 ...

Page 67: ...G FREE LENGTH VALVE SEAT ANGLE IN and EX Valve cutter angle a Valve contact width b H 64 Unit mm il EH63V 65V STD 8 960 8 975 0 3528 0 3533 9 00 9 015 0 3543 0 3549 0 025 0 055 0 001 0 0 0022 39 5 1 5551 a 90 b 0 7 1 O 0 028 0 039 Limit 8 93 0 351 6 9 08 0 3575 0 15 0 0059 2 0 0 079 3 ...

Page 68: ...r head b o k 16 3 1 9 9 225 275 2 2 1 2 7 0 Connecting rod cap bolts 1 1 2 5 15 35 1 5 3 4 Charge c o i l 5 1 6 5 70 90 6 9 8 8 Carburetor b o k 2 2 3 6 30 50 2 9 4 9 1Oil filter 1 2 3 I 100 150 I 9 Oil pressure switch 1 3 8 15 2 190 210 1 8 6 2 0 6 Pivot bolt 5 8 7 2 80 100 7 8 9 8 lock nut 4 3 7 2 60 100 5 9 9 8 Rocker a r m nut Rockercover 1 6 6 19 5 225 275 2 2 5 26 5 Currernt one 8 7 10 9 120...

Page 69: ...s consumption at high ambient temperature Comparison betweenoil viscosityand temparature Single grade Specified Lubricant Quality Multi grade I I I I 5w I I I I 20w I E O 1 L 30 1 I I I I 40 1 1OW 30 I I I 1OW 40 1 I I I I I I 1 J I I I I I I I 20 10 0 10 20 30 40 C 4 14 32 50 68 86 104 O F ...

Page 70: ...ic maintenance is vital to safe andefficient operationof engine Check the table below for periodic maintenance intervals It is also necessaryto conduct the maintenanceand adjustments on the emission related parts listed 1 Carburetor and internalparts 2 Chokesystem 3 Fuel strainer 4 Air cleaner elements 5 Intake pipe 6 Spark Plug 7 Magneto 8 Fuel hoses clamps and sealing gaskets The following maint...

Page 71: ...ne Note2 Every Every Eve Every 8 hours 50 200 500 daily hours hours hours Every 1 000 hours X Daily I X Refill daily to full level I l l 1 x 1 1 x 1 Note 1 Initial oil change and oil filter replacement should be performedafter20 hours of operation Thereafter change oilevery 50 hours andreplace oil filterevery 200 hours Beforechanging oil check fora suitable wayto dispose of old oil Do not pourit d...

Page 72: ...o prevent rust in the cylinder bore applyoil through the spark plug hole and turnthe crankshaft several turnsby hand Reinstall the plug 4 Turn the crankshaftby hand andleave it where the resistance i sthe heaviest 5 Clean outside o f the engine with oiled cloth 6 Put a plastic coveror the like overthe engine and store the engine in dry place 69 ...

Page 73: ......

Page 74: ...SU6ARU bin America Inc 940 LivelyBlvd l WoodDale IL 60191 l Phone 630 350 8200 l Fax 630 350 8212 e mail sale s robinamerica com l www robinamerica com PRINTED IN THE USA I ...

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