Yamaha EH64, EH65 User Manual

SERVICE MANUAL
EH63
EH64
EH65
EH72
7D5-28197-E0
2019.03×1
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7D5-28197-E0_cover.indd 1-2 2019/03/12 10:04:33

Yamaha EH64, EH65 Specifications

General

Brand	Yamaha
Model	EH64, EH65
Category	Engine
Language	English

Summary

GENERAL INFORMATION

MACHINE IDENTIFICATION

Identifies engine model and production number via serial label.

PERIODIC CHECKS AND ADJUSTMENTS

MAINTENANCE INTERVALS SCHEDULE

ENGINE SPEED ADJUSTMENT PROCEDURES

ENGINE SERVICE PROCEDURES

ENGINE INSPECTION AND COMPRESSION TESTING

Covers engine inspection, including measuring compression pressure for diagnostics.

AIR FILTER, MUFFLER, AND OIL COOLER SERVICE

CYLINDER HEAD AND VALVE SYSTEM SERVICE

OIL PUMP AND PISTON/CRANKSHAFT ASSEMBLY SERVICE

Covers service for oil pump, pistons, camshaft, crankshaft, and crankcase.

FUEL SYSTEM SERVICE

FUEL PUMP OPERATION AND MAINTENANCE

CARBURETOR ASSEMBLY AND ADJUSTMENT

Details carburetor service, including disassembly, assembly, and governor adjustment.

ELECTRICAL SYSTEM SERVICE

CIRCUIT DIAGRAM AND COMPONENT IDENTIFICATION

ELECTRICAL COMPONENT TESTING PROCEDURES

ELECTRIC STARTING AND CHARGING SYSTEM DIAGNOSIS

TROUBLESHOOTING GUIDE

ENGINE STARTING AND RUNNING PROBLEMS

Addresses issues like engine not starting, stalling, or uneven speed.

GOVERNOR OPERATION DIAGNOSIS

SPECIFICATIONS AND TORQUE VALUES

GENERAL AND MAINTENANCE SPECIFICATIONS

Lists engine, piston, ring, valve, and crankshaft specifications.

TIGHTENING TORQUES AND LUBRICATION GUIDELINES

Provides standard torque values and lubrication guidelines for engine components.

APPENDIX

CIRCUIT DIAGRAM DETAILS