Removal; Inspection - Yamaha RS90K Manuel D'atelier

4
DRIVE CHAIN HOUSING

REMOVAL

1. Remove:
• Driven sprocket
• Drive sprocket
Refer to "WITH REVERSE MODEL".

INSPECTION

1. Inspect:
• Drive chain housing 1
• Drive chain housing cover 2
Cracks/damage → Replace.
• Oil seals (drive chain housing and cover)
Wear/damage → Replace.
• Bearings (drive chain housing and cover) 3
Pitting/damage → Replace.
• Bearing (chain tensioner) 4
Pitting/damage → Replace the bearing and
the inner race holder as a set.
Replacement steps:
• Remove the circlip 5 (drive chain housing and
cover).
• Remove the bearing(s) 3 using a general bear-
ing puller.
• Install the new bearing(s).
NOTE:
Use a socket 6 that is the same size as the outside
diameter of the bearing race.
CAUTION:
Do not strike the inner race 7 or ball bearings
8.
Contact only the outer race 9.
• Install a new circlip (drive chain housing and
cover).
CAUTION:
Always use new circlips.
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POWR
TR