2007 YAMAHA YZF-R1 wheel torque

PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6 4. If the drive chain slack is incorrect,
adjust it as follows.
EAU34311
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
adjusting bolt on each side of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing bolt on each side of the
swingarm in direction (b), and then
push the rear wheel forward.
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:
ECA10570
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 thespecified limits.3. Tighten the locknuts, then the axle
nut to their specified torques.
1. Drive chain slack
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
Tightening torques:
Locknut:
16 Nm (1.6 m·kgf, 11 ft·lbf)
Axle nut:
150 Nm (15.0 m·kgf, 110 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-40
6
EAU24360
Front wheel
EAU33921
To remove the front wheel
WARNING
EWA10820


It is advisable to have a Yamaha
dealer service the wheel.


Securely support the motor-
cycle so that there is no dangerof it falling over.
1. Loosen the 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 6-39.3. 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.
CAUTION:
ECA11050
Do not apply the brake after the
brake calipers have been removed,
otherwise the brake pads will beforced shut.
EAU33932
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Lower the front wheel so that it is
on the ground.
4. Install the brake calipers by install-
ing the bolts, and then tightening
them to the specified torque.
1. Front wheel axle pinch bolt
1. Brake hose holder
2. Bolt and nut
3. Brake caliper bolt
4. Brake caliper
5. Axle bolt
1. Wheel axle
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-41
6
NOTE:Make sure that there is enough space
between the brake pads before install-
ing the brake calipers onto the brakediscs.
5. Install the brake hose holders by
installing the bolts and nuts.
6. Secure the wheel axle by installing
the axle bolt, and then tightening
the axle bolt to the specified
torque.NOTE:While tightening the axle bolt, hold the
wheel axle with a 19-mm hexagonwrench to keep it from turning.
7. Tighten wheel axle pinch bolt B,
and then tighten 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,
and then tighten 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)
Tightening torque:
Wheel axle pinch bolt:
21 Nm (2.1 m·kgf, 15 ft·lbf)
U4C8E0E0.book Page 41 Friday, September 15, 2006 3:21 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
6


Make sure that there is enough
space between the brake pads be-fore installing the wheel.
2. Install the drive chain onto the rear
sprocket.
3. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
4. Adjust the drive chain slack. (See
page 6-24.)
5. Tighten the axle nut to the speci-
fied torque.
EAU25870
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
1. Retainer
2. SlotTightening torque:
Axle nut:
150 Nm (15.0 m·kgf, 110 ft·lbf)
U4C8E0E0.book Page 43 Friday, September 15, 2006 3:21 PM