Drive Chain Slack Adjustment - Yamaha YBR 125K Owner's Manual

Drive chain slack adjustment

1. Locknut
1. Loosen the rear brake pedal free play adjusting nut.
2. Loosen the axle nut.
3. Loosen the chain adjusting locknuts on each chain
puller. To tighten the chain, turn the chain adjusting nuts
in direction a .To loosen the chain turn the chain
adjusting nuts in direction b
forward. Turn each chain adjusting nut exactly the same
amount to maintain correct axle alignment. There are
marks on each chain puller. Use these marks to align
the rear wheel.
CAUTION:
Too little chain slack will overload the engine and other vital
parts. Keep the slack within the specified limits.
To maintain correct axle alignment, Ensure the notch on
the adjuster is on the same mark on left and right side
4. After adjusting, be sure to tighten each chain adjusting
locknut. The tighten the axle nut to the specified torque
2. Adjusting bolt
5. Adjust the free play in the brake pedal.
CAUTION:
and push the wheel
Check the operation of the brake light after adjusting
the rear brake.
6-20
Axle nut torque:
91 N.m (9.1 Kgf.m, 66 lbf.ft)
Locknut torque:
15 N.m (1.5 Kgf.m, 11 lbf.ft)