Drive Chain Slack - Yamaha MTM850 Owner's Manual

Periodic maintenance and adjustment
1

Drive chain slack

The drive chain slack should be
2
checked before each ride and adjusted
if necessary.
3
To check the drive chain slack
4 1. Place the motorcycle on the sides-
tand.
TIP
5
When checking and adjusting the drive
chain slack, there should be no weight
6
on the motorcycle.
7 2. Shift the transmission into the neu-
tral position.
3. Measure the drive chain slack as
8
shown.
Drive chain slack:
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5.0–15.0 mm (0.20–0.59 in)
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11
12
EAU22762
EAU2277C
1
1. Drive chain slack
4. If the drive chain slack is incorrect,
adjust it as follows. NOTICE: Im-
proper drive chain slack will
overload the engine as well as
other vital parts of the motorcy-
cle and can lead to chain slip-
page or breakage. If the drive
chain slack is more than 25.0
mm (0.98 in), the chain can dam-
age the frame, swingarm, and
other parts. To prevent this from
occurring, keep the drive chain
slack within the specified lim-
its.
[ECA17791]
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.
1. Axle nut
2. Locknut
EAU57971
6-23
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
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2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting bolt on each side
of the swingarm in direction (b),
and then push the rear wheel for-
ward.
2