Yamaha YFM90RA Model Vehicle User Manual


 
1. Measure:
• drive chain slack
Out of specification Adjust.
2. Adjust:
• drive chain slack
TIP
The drive chain slack is adjusted by the rota-
tion of the rear axle hub.
a. Loosen the rear axle pinch bolts .
b. Loosen the locknut .
c. To tighten the drive chain, turn the drive chain
adjusting nut indirection . To loosen the
drive chain, turn the drive chain adjusting nut
indirection .
b
a
d. Tighten the locknut.
e. Tighten the rear wheel axle pinch bolts.
Excessive chain slack will overload the
engine and other vital parts; keep the slack
within the specified limits.
TOP
• The chain should be cleaned and lubricated
after every use of the vehicle.
55 Nm (5.5 m•kg, 39.8 ft•lb)
NOTICE
a
CHK
ADJ
ADJUSTING THE DRIVE CHAIN SLACK
Drive chain slack
10 ~ 25 mm (0.39 ~ 0.98 in)
3
1
2
3
2
1
a
b
a
3 - 28