Yamaha 2003 YFZ450S, Service Manual

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CHK
ADJ
ADJUSTING THE FRONT SHOCK ABSORBERS
EBS00111
ADJUSTING THE FRONT SHOCK
ABSORBERS
WARNING
_
Always adjust the spring preload, rebound
damping force and compression damping
force of both front shock absorbers to the
same setting. Uneven adjustment can
result in poor handling and loss of stability.
1. Adjust:
• spring preload
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Elevate the front wheels by placing a suit-
able stand under the frame.
b. Loosen the locknut
1
.
c. Turn the adjusting ring
2
in direction
a
or
b
.
NOTE:
_
• Be sure to remove all dirt and mud from
around the locknut and adjusting ring before
adjustment.
• The length of the spring (installed) changes
1.5 mm (0.06 in) per turn of the adjuster.
CAUTION:
_
Never attempt to turn the adjusting ring
beyond the maximum or minimum setting.
d. Tighten the locknut
1
with a steering nut
wrench
3
.
NOTE:
Set the torque wrench at a right angle to the
steering nut wrench.
Direction
a
Spring preload is
increased (suspension
is harder).
Direction
b
Spring preload is
decreased (suspension
is softer).
Adjusting length
c
Standard: 255 mm (10.04 in)
Minimum: 245 mm (9.65 in)
Maximum: 256.5 mm (10.10 in)
1
2
a
b
c