Yamaha YZF-R1 Owner's Manual page 82

PERIODIC MAINTENANCE AND ADJUSTMENT
1
1. Drive chain slack
4. If the drive chain slack is incorrect,
adjust it as follows.
To adjust the drive chain slack
6
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.
TIP
Using the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the same
position for proper wheel alignment.
1 2 3 4
EAU34316
1. Axle nut
2. Drive chain puller
3. Drive chain slack adjusting bolt
4. Locknut
5. Alignment marks
3. Tighten the axle nut, then the lock-
nuts to their specified torques.
6-26
Tightening torques:
[ECA10571]
(a)
(b)
5
Axle nut:
150 Nm (15 m·kgf, 108 ft·lbf)
Locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)