Yamaha YZF-R125 Owner's Manual page 55

1. Drive chain slack
4. If the drive chain slack is incorrect,
adjust it as follows.
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
PERIODIC MAINTENANCE AND MINOR REPAIR
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
2. To tighten the drive chain, turn the
EAU34312
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.
NOTE:
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.
CAUTION:
Improper drive chain slack will over-
load the engine 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 within the
specified limits.
3. Tighten the locknuts, then the axle
6-23
nut to their specified torques.
Tightening torques:
Locknut:
16 Nm (1.6 m·kgf, 11 ft·lbf)
Axle nut:
85 Nm (8.5 m·kgf, 61 ft·lbf)
ECA10570
6