Subaru EH72-2D Service Information Download Page 2 | Manualshive

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Summary of Contents for EH72-2D

Page 1: ...SERVICEINFORMATION EH72 2D ...

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Page 3: ...ERENCE 6 3 5 BREAK IN OPERATION 8 4 1 CARBURETOR 9 4 2 COMPORNENT PARTS 11 PREFACE This manual covers the service information trouble shooting procedures and so on of EH72 2 engine Careful observance of the instructions given herein will result in better safer and faster service work For more detailed instructions of disassembling and reassembling procedures please refer to the service manual for ...

Page 4: ...with oil Cooler Lubricant Automobile engine oil SAE 20 30 or 10W 30 Class SE or higher Capacity of Lubricant L U S gal 1 55 0 41 Carburetor 2 Barrel side draft type Fuel Automotive unleaded gasoline Fuel Feed System Diaphragm Fuel pump Pulse type Ignition System Flywheel Magneto Solid state Spark Plug BPR5ES NGK or BPR4EY NGK Charging Capacity V A 12 15 or 12 30 Option Starting System Electric Sta...

Page 5: ...s intake airflow and optimally distributes air fuel to each cylinder as well as optimizing camshaft profile and increasing compression ratio HEAVY DUTY CONSTRUCTON Reliable structure with pressure lubrication cast iron cylinder sleeve and dual air cleaner element Also heavy duty ball bearing installed on P T O side SUPERIOR OIL CONTROL In addition to the excellent oil control by 3 pieces oil rings...

Page 6: ...ssemble each group of disassembled parts 4 Carefully handle disassembled parts and clean them with washing oil if necessary 5 Use the correct tools in the correct way 6 When disconnecting electric wirings be sure to hold and disconnect the connector housing 3 2 SPECIAL TOOLS No Special Tool is needed for disassembling and reassembling the engine For pulling off the flywheel universal type puller b...

Page 7: ... 8 Chock control lever and link 1 Disconnect the choke rod holder and remove the choke control rod See Fig 3 1 2 Remove the choke knob CONTROL BOX CHOKE CONTROL ROD RETURN SPRING LINK PIVOT CHOKE CONTROL LINK CHOKE KNOB CLAMP M5 TAPPING SCREW BLOWER HOUSING M6 FLANGE BOLT M6 FLANGE BOLT STEP 8 Fig 3 1 ...

Page 8: ... the rod holder and remove the governor rod See Fig 3 3 4 Remove the nuts adapter and Carburetor from the intake manifold See Fig 3 4 M6 Flange nut 4pcs FUEL PIPE GOVERNOR ROD ROD HOLDER Turn the rod holder clockwise to loosen VIEW A Fig 3 2 Fig 3 3 Fig 3 4 SPARK PLUG CAP GROMMT PLUG CAP 2 CYLINDER SIDE ONLY AS OPTION 1 CYLINDER SIDE 1 CYLINDER SIDE 2 CYLINDER SIDE A STEP 9 ...

Page 9: ...n governor lever and speed control lever 3 4 REASSEMBLY PROCEDURES DIFFERENCE 2 CYLINDER SIDE SPARK PLUG CAP GROMMT PLUG CAP 2 CYLINDER SIDE ONLY GASKET CARBURETOR CARBURETOR GASKET ADAPTER CLEANER ADAPTER CHOKE CONTROL ROD RETURN SPRING LINK PIVOT CHOKE CONTROL LINK CHOKE KNOB CLAMP M5 TAPPING SCREW Tightening torque 16 6 18 6 N m 170 190 kgf cm 12 3 13 7 ft lb The marking down wards GASKET ADAPT...

Page 10: ... 21752 9 5 29 5125 9 5 29 5125 52 52 635 1 1 5 37 5 5 85 725 8 23 1 8 26 2 187 63 2 63 17 0 1 2 5 Fitting location of governor rod and governor spring 50 Hz 60 Hz STD COLOR Silver Gold POSITION A 3 a GOVERNOR ROD ROD HOLDER Turn the rod holder counter clockwise and fix it Then hook the rod spring as shown on the diagram VIEW A ROD SPRING 24 GOVERNOR LEVER Attach governor rod and rod spring between...

Page 11: ... 0 6 5 ft lb 3 5 BREAK IN OPERATION An engine that has been completely overhauled by being fitted with a new piston rings valves and connecting rod should be thoroughly BREAK IN before being put back into service Good bearing surfaces and running clearances between the various parts can only be established by operating the engine under reduced speed and loads for a short period of time While the e...

Page 12: ...ON EH72 2 Main System Slow System FUEL NIPPLE DRAIN VALVE COMPL SOLENOID JET COML MAIN L JET COML MAIN R FLOAT SCREW THROTTLE ADJUST SLOW JET VALVE THROTTLE VALVE CHOKE MIXTURE FUEL AIR MIXTURE FUEL AIR FUEL AIR MIXTURE FUEL AIR MIXTURE L R ...

Page 13: ...ith the fuel through the emulsion tube and the mixture is atomized out of the main bore It is mixed again with the air taken through the air cleaner into an optimum fuel air mixture which is supplied to the engine CHOKE The choke is used for easy start when engine is cold When the starter is operated with a choke valve fully closed the negative pressure applied to the main nozzle increases and dra...

Page 14: ...JUST 14 SPRING ADJUST SCREW 15 SCREW 16 COLLAR CHOKE 17 SEAL CHOKE 18 SEAL THROTTLE 19 COLLAR THROTTLE 20 VALVE COMPL SOLENOID 21 GASKET MATERIAL ALUMINUM 22 O RING 23 GASKET SPACER 24 SPACER CARB 25 O RING 26 COVER SLOW PASSAGE 27 GASKET SLOW PASSAGE 28 SCREW 29 JET COML MAIN L 132 30 JET COML MAIN R 133 10 21 12 11 8 25 30 29 23 24 15 4 5 14 13 16 17 19 18 1 2 3 9 7 6 22 26 27 28 20 With locktig...

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Page 16: ...ISSUE EMD EU6947 PRINTED IN JAPAN February 2010 ...

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