Installing The Drive Chain - Yamaha YFM70RY Service Manual

4. Lubricate:
• Drive chain
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
5. Check:
• Drive sprocket
• Rear wheel sprocket
More than 1/4 tooth "a" wear → Replace the
drive chain sprockets as a set.
Bent teeth → Replace the drive chain sprock-
ets as a set.
b. Correct
1. Drive chain roller
2. Drive chain sprocket
EAS28800

INSTALLING THE DRIVE CHAIN

1. Lubricate:
• Drive chain
Recommended lubricant
Engine oil or chain lubricant
suitable for O-ring chains
2. Install:
• Drive chain
• Drive sprocket "1"
• Lock washer "2" New
• Drive sprocket nut "3"
• Drive chain guide
TIP
While applying the rear brake, tighten the drive
sprocket nut.
Drive sprocket nut
85 Nm (8.5 m·kg, 61 ft·lb)
1
2
3
3
3. Bend the lock washer tab along a flat side of
the nut.
4-65
CHAIN DRIVE
2
New
1