Removal; Inspection - Yamaha RS90K Manuel D'atelier

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DRIVE CHAIN HOUSING

REMOVAL

1. Remove:
• Reverse driven gear 1 (driven sprocket for
without reverse model)
NOTE:
While holding the front axle assembly with spanner
wrench 2, loosen the reverse driven gear bolt.
2. Remove:
• Drive sprocket 1
NOTE:
While holding the secondary shaft with the second-
ary shaft slide & holder 2, loosen the drive
sprocket nut with drive gear socket 3.
Drive gear socket:
90890-01490, YS-01490
Secondary shaft slide & holder:
90890-01492, YS-01492

INSPECTION

1. Inspect:
• Drive chain housing 1
• Drive chain housing cover 2
Cracks/damage → Replace.
• Shift fork 3
Pitting/wear/damage → Replace.
• Oil seals (drive chain housing and cover)
Wear/damage → Replace.
• Bearings (drive chain housing and cover) 4
Pitting/damage → Replace.
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POWR
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