Yamaha YFM90RA Model Vehicle User Manual


 
EBS00478
CHECKING THE REAR SHOCK ABSORBER
1. Check:
shock absorber
Oil leaks
Replace the rear shock absorber
assembly.
shock absorber rod
Bends/damage
Replace the rear shock
absorber assembly.
spring
Fatigue
Replace the rear shock absorber
assembly.
Move the spring up and down.
CHAS
6 - 45
EBS00487
REMOVING THE REAR SHOCK ABSORBER
1. Remove:
• rear shock absorber lower bolt
• rear shock absorber upper bolt
TIP
While removing the rear shock absorber lower
bolt, hold the swingarm so that it does not drop
down.
EBS00493
TIP
Before removing the drive chain and the
sprockets, measure the drive chain slack and a
15-link section of the drive chain.
EBS00494
REMOVING THE SWINGARM
1. Check:
• swingarm free play
a. Check the tightening torque of the pivot
shaft nut.
75 Nm (7.5m•kg, 54.2 ft•lb)
REAR SHOCK ABSORBER, SWINGARM AND
DRIVE CHAIN
A
B
b. Check the swingarm side play by mov-
ing it from side to side.
If side play is noticeable, check the spacer,
bearings and frame pivot.
Swingarm free play limit
(at the end of the swingarm)
1.0 mm (0.04 in)