Yamaha TZ125M1, Owner'S Service Manual

Page: 71 / 257

DRIVE CHAIN SLACK ADJUSTMENT
3-21
NOTE:
Before checking and/or adjusting, rotate the
rear wheel through several revolutions and
check the slack several times to find the tight-
est point. Check and/or adjust chain slack with
rear wheel in this “tight chain” position.
3. Adjust:
• Drive chain slack
Drive chain slack adjustment steps:
• Loosen the axle nut
1
and locknuts
2
.
• Adjust chain slack by turning the adjusters
3
.
S
To tighten
≥ ≥
Turn adjuster
3 3
counter-
clockwise.
To loosen
≥ ≥
Turn adjuster
3 3
clockwise.
S
• Turn each adjuster exactly the same
amount to maintain correct axle alignment.
(There are marks
a
on each side of chain
puller alignment.)
NOTE:
Turn the adjuster so that the chain is in line
with the sprocket, as viewed from the rear.
CC CAUTION:
Too small chain slack will overload the
engine and other vital parts; keep the
slack within the specified limits.
• Tighten the axle nut while pushing down
the drive chain.
Axle nut:
63 Nm (6.3 m•kg, 45 ft•lb)
U
• Turn out the adjusters to the specified
torque.
Adjuster:
2 Nm (0.2 m•kg, 1.4 ft•lb)
U
• Tighten the locknuts.
T
Locknut:
16 Nm (1.6 m•kg, 11 ft•lb)
INSP
ADJ