Adjusting The Drive Chain Slack - Yamaha YFZ450S 2003 Service Manual

ADJUSTING THE DRIVE CHAIN SLACK

a
b a
b
3
2
c
ADJUSTING THE DRIVE CHAIN SLACK
NOTE:
Measure the drive chain slack halfway
between the drive axle and the rear axle.
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
swingarm or cause an accident. Therefore,
keep the drive chain slack within the speci-
fied limits.
1. Elevate the rear wheels by placing the suit-
2. Measure:
3. Adjust:
M
a. Loosen the hub nuts 1.
1
b. Loosen the locknuts 2.
c. Turn both adjusting bolts 3 in direction a
a
NOTE:
To maintain the proper axle alignment, adjust
both sides evenly. (There are marks c on
each side of hub.)
3 - 42
CAUTION:
able stand under the frame.
• drive chain slack a
Out of specification → Adjust.
Drive chain slack
25 ~ 35 mm (0.98 ~ 1.38 in)
• drive chain slack
MMM M MMM M M MMM M M MMM
or b until the specified drive chain slack is
obtained.
Drive chain slack is
Direction a
reduced.
Drive chain slack is
Direction b
increased.
CHK
ADJ
M M MMM M M MMM M MMM