Yamaha XRS900 Series Owner's Manual page 73

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1. Drive chain slack
Drive chain slack:
5.0–15.0 mm (0.20–0.59 in)
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]
Periodic maintenance and adjustment
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
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1. Axle nut
2. Locknut
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.
6-23
EAU57971
1. Drive chain slack adjusting bolt
TIP
Using the alignment marks and notch
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on each side of the swingarm, make
sure that both drive chain pullers are in
the same position for proper wheel
alignment.
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(a)
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(b)
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5
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