Checking And Adjusting The Steering Head - Yamaha FZ8NA Service Manual

EAS21510
CHECKING AND ADJUSTING THE STEER-
ING HEAD
1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there
is no danger of it falling over.
TIP
Place the vehicle on a suitable stand so that
the front wheel is elevated.
2. Check:
• Steering head
Grasp the bottom of the front fork legs
and gently rock the front fork.
Blinding/looseness → Adjust the steering
head.
3. Remove:
• Upper bracket
4. Adjust:
• Steering head
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Remove the lock washer "1", the upper ring
nut "2", and the rubber washer "3".
b. Loosen the lower ring nut "4" and then
tighten it to specification with a steering nut
wrench "5".
TIP
• Set the torque wrench at a right angle to the
steering nut wrench.
• Move the steering to the left and right a cou-
ple of times to check that it moves smoothly.
PERIODIC MAINTENANCE
Steering nut wrench
90890-01403
Exhaust flange nut wrench
YU-A9472
Lower ring nut (initial tightening
torque)
52 Nm (5.2 m·kgf, 38 ft·lbf)
c. Loosen the lower ring nut "6" completely,
then tighten it to specification.
EWA13140
WARNING
Do not overtighten the lower ring nut.
Lower ring nut (final tightening
torque)
18 Nm (1.8 m·kgf, 13 ft·lbf)
d. Check the steering head for looseness or
binding by turning the front fork all the way
in both directions. If any binding is felt,
remove the lower bracket and check the
upper and lower bearings.
Refer to "STEERING HEAD" on page 4-78.
e. Install the rubber washer "7".
f. Install the upper ring nut "8".
g. Finger tighten the upper ring nut, then align
the slots of both ring nuts. If necessary,
hold the lower ring nut and tighten the
upper ring nut until their slots are aligned.
h. Install the lock washer "9".
TIP
Make sure the lock washer tabs "a" sit correctly
in the ring nut slots "b".
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