Yamaha YZFR1Y(C) - Manual (Page 82)

PERIODIC MAINTENANCE AND ADJUSTMENT
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7
4. If the drive chain slack is incorrect,
adjust it as follows.
EAU34314
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
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. NOTICE: Improper drive
chain slack will overload the en-
gine as well as other vital parts
of the motorcycle and can lead
to chain slippage or breakage.
To prevent this from occurring,
keep the drive chain slack with-
in the specified limits.
[ECA10571]
TIP
Using the alignment marks on each
side of the swingarm, make sure that
both chain pullers are in the same posi-
tion for proper wheel alignment.
3. Tighten the axle nut, then the lock-
nuts to their specified torques.
1. Drive chain slack
1
1. Axle nut
2. Chain puller
3. Drive chain slack adjusting bolt
4. Locknut
5. Alignment marks
(b)
(a)
5
1 2 3 4
Tightening torques:
Axle nut:
150 Nm (15.0 m·kgf, 110 ft·lbf)
Locknut:
16 Nm (1.6 m·kgf, 11 ft·lbf)
U14B10E0.book Page 27 Friday, November 21, 2008 9:38 AM