Yamaha YZFR6X(C) 2008 Service Manual page 123

3. Remove:
• Upper bracket
Refer to "STEERING HEAD" on page 4-
55.
4. Adjust:
• Steering head
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a. Remove the lock washer "1", upper ring nut
"2", and rubber washer "3".
b. Loosen the lower ring nut "4" and then
tighten it to specification with a steering nut
wrench "5".
Steering nut wrench
90890-01403
Spanner wrench
YU-33975
Lower ring nut (initial tightening
torque)
52 Nm (5.2 m·kg, 38 ft·lb)
NOTE:
Set the torque wrench at a right angle to the
steering nut wrench.
c. Loosen the lower ring nut completely, then
tighten it to specification.
EWA13140
WARNING
Do not overtighten the lower ring nut.
Lower ring nut (final tightening
torque)
14 Nm (1.4 m·kg, 10 ft·lb)
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 4-55.
e. Install the rubber washer "3".
f. Install the upper ring nut "2".
g. Finger tighten the upper ring nut "2", then
align the slots of both ring nuts. If neces-
sary, hold the lower ring nut and tighten the
upper ring nut until their slots are aligned.
h. Install the lock washer "1".
NOTE:
Make sure the lock washer tabs "a" sit correctly
in the ring nut slots "b".
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5. Install:
• Upper bracket
Refer to "STEERING HEAD" on page 4-
55.
6. Measure:
• Steering head tension
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NOTE:
Make sure all of the cables and wires are prop-
erly routed.
a. Point the front wheel straight ahead.
b. Install a plastic locking tie "1" loosely
around the end of the handlebar as shown.
c. Hook a spring gauge "2" onto the plastic
locking tie.
3-28
CHASSIS