Yamaha YFM90RA Model Vehicle User Manual


 
CHAS
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4. Check:
• drive chain rollers
Damage/wear Replace the drive chain.
• drive chain side plates
Cracks/damage/wear Replace the drive
chain.
5. Lubricate:
• drive chain
REAR SHOCK ABSORBER, SWINGARM AND
DRIVE CHAIN
6. Check:
• drive sprocket
• driven sprocket
More than 1/4 tooth wear Replace
the drive chain sprockets as a set.
Bent teeth Replace the drive chain
sprockets as a set.
Correct
Drive chain roller
Drive chain sprocket
EBS00498
INSTALLING THE DRIVE SPROCKET
1. Install:
• drive sprocket
• lock washer
• bolts
2. Bend the lock washer tab along a flat side
of the nut.
Drive sprocket nut
10 Nm (1.0 m•kg, 7.2 ft•lb)
INSTALLING THE DRIVE CHAIN
1. Install:
• drive chain
masterlink