Checking The Front Fork - Yamaha 2007 FZ6-NA Service Manual

c. Loosen the lower ring nut "4" completely
and then tighten it to specification with a
steering nut wrench.
EWA13140
WARNING
Do not overtighten the lower ring nut.
Lower ring nut (final tightening
torque)
18 Nm (1.8 m·kg, 13 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 4-72.
e. Install the rubber washer "2".
f. Install the upper ring nut "3".
g. Finger tighten the upper ring nut "3", 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 4-72.
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.
d. Hold the spring gauge at a 90° angle from
the handlebar, pull the spring gauge, and
then record the measurement when the
handlebar starts to run.
Steering head tension
200–500g
e. Repeat the above procedure on the oppo-
site handlebar.
f. If the steering head tension is out of specifi-
cation (both handlebars should be within
specification), remove the upper bracket
and loosen or tighten the upper ring nut.
g. Reinstall the upper bracket and measure
the steering head tension again as
described above.
h. Repeat the above procedure until the steer-
ing head tension is within specification.
i. Grasp the bottom of the front fork legs and
gently rock the front fork.
Binding/looseness → Adjust the steering
head.
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EAS21530

CHECKING THE FRONT FORK

1. Stand the vehicle on a level surface.
3-30
CHASSIS