Yamaha TW125 1999 Service Manual page 74

ADJUSTING THE DRIVE CHAIN SLACK
1. Stand the motorcycle on a level surface.
WARNING
Securely support the motorcycle so that
there is no danger of it falling over.
NOTE:
Place the motorcycle on a suitable stand so that
the rear wheel is elevated.
2. Rotate the rear wheel several times and
check the drive chain to locate its tightest
point.
3. Measure:
S drive chain slack
Out of specification ! Adjust.
Drive chain slack
35 X 60 mm
4. Adjust:
S drive chain slack
a. Loosen the wheel axle nut 1 .
b. Turn the chain pullers 2 in direction a or b
until the specified drive chain slack is ob-
tained.
! Drive chain is tightened.
a
Direction
! Drive chain is loosened.
Direction
b
NOTE:
To maintain the proper wheel alignment, adjust
both sides evenly.
c. Tighten the wheel axle nut.
Wheel axle nut
90 Nm (9.0 mSkg)
CAUTION:
Do not loosen the wheel axle nut after tight-
ening it to the specified torque. If the groove
in the wheel axle nut is not aligned with the
cotter pin hole in the wheel axle, tighten the
nut further until they are aligned.
3-25
CHK
ADJ