Yamaha YBR125ED 2005 Service Manual page 85

ADJUSTING THE DRIVE CHAIN SLACK
a
5
4
6
1
2
3
c
5 6
(b)
b
a
1. Stand the vehicle on a level surface.
WARNING
_
Securely support the vehicle so that there
is no danger of it falling over.
NOTE:
_
Place the vehicle on a suitable stand so that
the rear wheel is elevated.
2. Spin the rear wheel several times and find
the tightest position of drive chain.
3. Check:
• drive chain slack a
Out of specification → Adjust.
Drive chain slack
20 ~ 30 mm (0.79 ~ 1.18 in)
4. Adjust:
• drive chain slack
M MMM M MMM M M MMM
a. Remove the cotter pin 1.
b. Loosen the brake torque rod nut 2.
c. Loosen the brake rod adjusting nut 3.
d. Loosen the wheel axle nut 4.
e. Loosen both chain puller locknuts 5.
f. Turn both chain puller adjusting bolts 6 in
direction a or b until the specified drive
chain slack is obtained.
Direction a
Direction b
NOTE:
_
To maintain the proper wheel alignment, adjust
both sides c evenly.
g. Tighten both chain puller locknuts to specifi-
cation.
Chain puller locknut
16 Nm (1.6 m · kg, 11 ft · lb)
3 - 32
CHK
ADJ
M M MMM M M MMM M
Drive chain is tightened.
Drive chain is loosened.
M MMM M MMM