wheel bolt torque YAMAHA YZF-R1 2011 Owners Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-26
64. If the drive chain slack is incorrect,
adjust it as follows.
EAU34316
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 leadto chain slippage or breakage.
To prevent this from occurring,
keep the drive chain slack with-
in the specified limits.
[ECA10571]
TIPUsing 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.3. Tighten the axle nut, then the lock-
nuts to their specified torques.
1. Drive chain slack
1
1. Axle nut
2. Drive chain puller
3. Drive chain slack adjusting bolt
4. Locknut
5. Alignment marks
(b) (a)
5
12 34
Tightening torques:
Axle nut:
150 Nm (15 m·kgf, 108 ft·lbf)
Locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)
U14BE2E0.book Page 26 Friday, June 18, 2010 8:47 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
6
EAU24360
Front wheel
EAU33923
To remove the front wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.1. Loosen the front wheel axle pinch
bolts, the axle bolt, and then the
brake caliper bolts.
2. Lift the front wheel off the ground
according to the procedure on
page 6-37.3. Remove the brake hose holder on
each side by removing the bolt and
nut.
4. Remove the brake caliper on each
side by removing the bolts.
5. Remove the axle bolt, push the
wheel axle out from the left side,
and then remove the wheel.
NOTICE: Do not apply the brake
after the brake calipers have
been removed, otherwise the
brake pads will be forced shut.
[ECA11051]EAU33934
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Install the axle bolt, and then lower
the front wheel so that it is on the
ground, and then put the sidestand
down.
4. Install the brake calipers by install-
ing the bolts, and then tightening
them to the specified torque.TIPMake sure that there is enough space
between the brake pads before install-
ing the brake calipers onto the brake
discs.
1. Front wheel axle pinch bolt11
1. Brake hose holder
2. Bolt and nut
3. Brake caliper bolt
4. Brake caliper
5. Axle bolt
1
2
3
4 5
1. Wheel axle
1
U14BE2E0.book Page 38 Friday, June 18, 2010 8:47 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-39
6 5. Install the brake hose holders by
installing the bolts and nuts.
6. Tighten the axle bolt to the speci-
fied torque.
TIPWhile tightening the axle bolt, hold the
wheel axle with a 19-mm hexagon
wrench to keep it from turning.7. Tighten wheel axle pinch bolt B,
then pinch bolt A to the specified
torque.8. Retighten pinch bolt B to the spec-
ified torque.
9. Tap the outer side of the right fork
leg with a rubber mallet to align it
with the end of the wheel axle.
10. Tighten wheel axle pinch bolt D,
then pinch bolt C to the specified
torque.
11. Retighten pinch bolt D to the spec-
ified torque.12. While applying the front brake,
push down hard on the handlebar
several times to check for proper
fork operation.Tightening torque:
Brake caliper bolt:
35 Nm (3.5 m·kgf, 25 ft·lbf)
Tightening torque:
Axle bolt:
91 Nm (9.1 m·kgf, 66 ft·lbf)
1. Front wheel axle pinch bolt A
2. Front wheel axle pinch bolt B
3. Front wheel axle pinch bolt C
4. Front wheel axle pinch bolt D
Tightening torque:
Wheel axle pinch bolt:
21 Nm (2.1 m·kgf, 15 ft·lbf)41
3
2
Tightening torque:
Wheel axle pinch bolt:
21 Nm (2.1 m·kgf, 15 ft·lbf)
U14BE2E0.book Page 39 Friday, June 18, 2010 8:47 AM