Yamaha YJ50RAP Service Manual page 119

CRANKCASE ................................................................................................5-37
DISASSEMBLING THE CRANKCASE....................................................5-39
CHECKING THE CRANKCASE ..............................................................5-39
CHECKING THE BEARINGS AND OIL SEALS...................................... 5-40
CHECKING THE REED VALVE..............................................................5-40
ASSEMBLING THE CRANKCASE.......................................................... 5-41
CRANKSHAFT ..............................................................................................5-42
REMOVING THE CRANKSHAFT ASSEMBLY ....................................... 5-43
CHECKING THE CRANKSHAFT ............................................................ 5-43
INSTALLING THE CRANKSHAFT .......................................................... 5-44
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