Disassembling The Crankcase - Yamaha YFM250RX 2008 Service Manual

CRANKCASE

DISASSEMBLING THE CRANKCASE

1. Remove:
• Timing chain guide (intake side)
• Timing chain
• Crankshaft sprocket
2. Remove:
• Neutral switch
• Crankcase bolts M6 × 70 mm
• Copper washers
• Crankcase bolts M6 × 60 mm
• Crankcase bolts M6 × 55 mm
• Crankcase bolts M6 × 45 mm
NOTE: NOTE:
Loosen each bolt 1/4 of a turn at a time, in
stages and in a crisscross pattern. After all of
the bolts are fully loosened, remove them.
3. Turn:
• Shift drum segment
NOTE: NOTE:
Turn the shift drum segment
shown in the illustration. In this position, the
shift drum segment's teeth will not contact the
crankcase during crankcase separation.
4. Remove:
• Right crankcase
CAUTION:
• First check that the shift drum segment's
teeth and the drive axle circlip are prop-
erly positioned, then remove the right
crankcase.
• Do not damage the crankcase mating sur-
faces.
4-69
ENG
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to the position