Fork Springs; Front Suspension Disassembly - Honda CRF450X 2017 Owner's Manual & Competition Handbook

Both compression and rebound damping can be
increased by turning the adjuster clockwise.
NOTICE
Always start with full hard when adjusting
damping.
Do not turn the adjuster screw more than the
given positions or the adjuster may be damaged.
Be sure that the rebound and compression
adjusters are firmly located in a detent, and not
between positions.
(1)
(1) rebound damping adjuster
(2) compression damping adjuster
17 CRF450X̲31MEY710.indb 113 17 CRF450X̲31MEY710.indb 113

Fork Springs

The fork springs in CRF's are about right for
riders weighing between 150 lb (68 kg) and
160 lb (73 kg) (less riding gear). So if you're
a heavier rider, you have to go up on the oil
capacity or get a stiffer spring. Do not use less
oil than the minimum specified for each spring
or there will be a loss of rebound damping
control near full extension. If the fork is too
hard on big bumps, turn the damping adjuster
counterclockwise 1-turn and lower the oil
(2)
capacity in increments of 0.2 oz (5 cm
both fork legs until the desired performance is
obtained. Do not, however, lower the oil capacity
below the minimum oil capacity.
Minimum oil level:
Standard spring:
Softer spring:
Stiffer spring:
When adjusting oil capacity, bear in mind that
the air in the fork will increase in pressure while
riding; therefore, the higher the oil capacity, the
higher the eventual pressure of any air in the
fork.
Oil level 13.6 US oz (402 cm
(MAX)
Oil level 11.0 US oz (324 cm
(STANDARD)
Oil level 10.3 US oz (306 cm
(MIN)
Front Suspension Adjustments

Front Suspension Disassembly

• If your CRF is brand-new, put enough part-
• For optimum performance, and extended
• When disassembling the fork, turn the
3
) in
3
10.3 US oz (306 cm )
3
10.5 US oz (311 cm )
3
10.5 US oz (309 cm )
(1) rebound damping adjuster
3 )
(2) compression damping adjuster
)
3
)
3
Stroke (mm)
throttle break-in time (about 1 hour) on it to
ensure that the suspension has worked in.
fork life, the fork should be completely
disassembled and cleaned after the first 3
hours of riding. See the Service Manual or
your dealer for this service.
rebound (1) and compression (2) damping
adjusters counterclockwise to the softest
position to prevent damaging the adjustment
needle (be sure to record the number of turns
from the starting position).
(2)
(1)
Adjustments for Competition
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