Disassembling The Crankcase; Checking The Crankcase - Yamaha YJ50RN Service Manual

EAS00385

DISASSEMBLING THE CRANKCASE

1. Remove:
• crankcase screws 1
NOTE:
@
Loosen each screw 1/4 of a turn at a time, in
stages and in a crisscross pattern. After all of
the screws are fully loosened, remove them.
2. Remove:
• right crankcase 1
CAUTION:
2 @
Tap on one side of the crankcase with a
soft-face hammer. Tap only on reinforced
1
portions of the crankcase, not on the
crankcase mating surfaces. Work slowly
and carefully and make sure the crankcase
halves separate evenly.
NOTE:
@
Remove the crankcase separating tool 2.
EAS00399

CHECKING THE CRANKCASE

1. Thoroughly wash the crankcase halves in a
2. Thoroughly clean all the gasket surfaces
3. Check:
• crankcase
• oil delivery passages
5 - 39
CRANKCASE
Crankcase separating tool
YU-01135
mild solvent.
and crankcase mating surfaces.
Cracks/damage → Replace.
Obstruction → Blow out with compressed
air.
ENG