2008 YAMAHA XT660Z wheel torque

PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
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1. Wheel axle
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
ECA10570
CAUTION:
Improper drive chain slack will
overload the engine as well as oth-
er vital parts of the motorcycle and
can lead to chain slippage or break-
age. To prevent this from occurring,
keep the drive chain slack within
the specified limits.
3. Tighten the locknuts, then the axle nut to their specified torques.
Tightening torques:
Locknut:16 Nm (1.6 m·kgf, 11 ft·lbf)
Axle nut: 105 Nm (10.5 m·kgf, 75 ft·lbf)
EAU34311
To adjust the drive chain slack1. 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
loosen the drive chain, turn the
adjusting 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 po-
sition for proper wheel alignment.
XT660Z 04-06 ING 31-03-2008 14:05 Pagina 6-24

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
1. Loosen the front wheel axle pinchbolts, the wheel axle and the
brake caliper bolts.
2. Lift the front wheel off the ground according to the procedure on
page 6-36.
3. Remove the brake caliper on each side by removing the bolts.
ECA11050CAUTION:
Do not apply the brake after the
brake calipers have been removed,
otherwise the brake pads will be
forced shut.
4. Pull the wheel axle out, and then remove the wheel.
EAUB1470
To install the front wheel1. Lift the wheel up between the fork legs.
2. Insert the wheel axle.
3. Install the brake calipers by in- stalling the bolts.
NOTE:
Make sure that there is enough space
between the brake pads before in-
stalling the brake calipers onto the
brake discs.
4. Lower the front wheel so that it is on the ground.
5. Tighten the wheel axle and the brake caliper bolts to the specified
torques.
ECAB0060CAUTION:
Be sure the right brake disc is posi-
tioned exactly in the middle of the
caliper pads to prevent any brake
drag. Tap the side of the right fork
leg to position the disc correctly.
Tightening torques: Wheel axle:60 Nm (6.0 m·kgf, 44 ft·lbf)
Front wheel axle pinch bolt: 18 Nm (1.8 m·kgf, 13 ft·lbf)
Brake caliper bolt: 40 Nm (4.0 m·kgf, 29 ft·lbf)
6. Tighten wheel axle pinch bolt A, and then pinch bolt B to the spec-
ified torque.
7. Retighten pinch bolt A to the specified torque.
8. Apply the front brake several times, and then while holding the
brake lever in, push down hard on
the handlebar several times to
check for proper fork operation.

XT660Z 04-06 ING 11-03-2008 8:31 Pagina 6-37

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-39
EAUB1450
To install the rear wheel1. Install the wheel and the brake caliper bracket by inserting the
wheel axle from the right-hand
side.
NOTE:
●Make sure that the slot in the
brake caliper bracket is fit over the
retainer on the swingarm.
●Make sure that there is enough
space between the brake pads
before installing the wheel.
2. Install the drive chain onto the rear sprocket.
3. Install the axle nut, and then low- er the rear wheel so that it is on
the ground.
4. Adjust the drive chain slack. (See page 6-24.)
5. Apply the rear brake several times, and then tighten the axle
nut to the specified torque.
Tightening torque:
Axle nut:105 Nm (10.5 m·kgf, 75 ft·lbf)
EAU25870
Troubleshooting
Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during 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
inferior, have a shorter service life and
can lead to expensive repair bills.

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