Adjusting The Drive Chain Slack - Yamaha YZF-R1S Service Manual

ADJUSTING THE DRIVE CHAIN SLACK

3-49
EAS00140
ADJUSTING THE DRIVE CHAIN SLACK
NOTE:
The drive chain slack must be checked at the
tightest point on the chain.
CAUTION:
A drive chain that is too tight will overload
the engine and other vital parts, and one that
is too loose can skip and damage the swin-
garm or cause an accident. Therefore, keep
the drive chain slack within the specified
limits.
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. Spin the rear wheel several times and find
the tightest position of drive chain.
3. Check:
S drive chain slack a
Out of specification ! Adjust.
Drive chain slack
25 X 35 mm (0.98 X 1.38 in)
4. Adjust:
S drive chain slack
a. Loosen the wheel axle nut 1 .
b. Loosen both locknuts 2 .
c. Turn both adjusting bolts 3 in direction a or
b until the specified drive chain slack is ob-
tained.
CHK
ADJ