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Front Suspension Adjustments
106 Adjustments for Competition
Front Suspension Adjustments
The front suspension can be adjusted for the rider’s
weight and riding conditions by using one or more
of the following methods:
• Oil volume — The effects of higher or
lower fork oil level are only felt during the
final 3.9 in (100 mm) of fork travel.
• Compression damping — Turning the
compression damping screw adjusts how
quickly the fork compresses.
• Rebound damping — Turning the rebound
damping screw adjusts how quickly the fork
extends.
• Fork springs — Optional springs are
available in softer and stiffer types than the
standard rate. (page 163)
The inverted fork on your CRF features sealed
damper cartridges with dual (separate air and oil)
chambers to prevent aeration. The design also
isolates the oil in each fork tube/slider, which may
contain air bubbles and/or metal particles, from the
sealed cartridge to provide more consistent
damping.
Air is an unstable gas which builds up pressure as
it is worked (such as in a fork). Air pressure acts as
a progressive spring and affects the entire range of
fork travel. This means the fork action on your
CRF will get stiffer during a race. For this reason,
release built-up air pressure in the fork legs
between motos. Be sure the fork is fully extended
with the front tire off the ground when you release
the pressure.
The standard air pressure is 0 psi (0 kPa, 0 kgf/cm
2
).
You may relieve accumulated air pressure in the
fork legs by using the pressure release screws. The
front wheel should be off the ground before you
release the pressure.The air pressure should be
adjusted according to the altitude and outside
temperature. The air pressure should be adjusted
according to the altitude and outside temperature.
1. Place your CRF on an optional workstand or
equivalent support with the front wheel off the
ground.
2. Remove the pressure release screw (1).
3. Check that the O-ring (2) is in good condition.
4. Install and tighten the pressure release screw to
the specified torque:
0.9 lbf·ft (1.2 N·m, 0.1 kgf·m)
Rebound Damping Adjustment
The fork rebound damping adjuster (1) has 16
positions or more. Turning the adjuster screw one
full turn clockwise advances the adjuster four
positions. To adjust the rebound damping to the
standard setting, proceed as follows:
Turn the adjuster clockwise until it will no longer
turn (lightly seats). This is the full hard position.
The adjuster is set in the standard position when
the adjuster is turned counterclockwise 15 clicks.
Make sure that both fork legs are adjusted to the
same position.
Compression Damping Adjustment
This adjustment affects how quickly the fork
compresses. The fork compression damping
adjuster (2) screw has 16 positions or more.
Turning the adjuster one full turn changes the
adjuster four positions. To adjust the adjuster to the
standard position, proceed as follows:
Turn the adjuster clockwise until it will no longer
turn (lightly seats). This is the full hard position.
The adjuster is set in the standard position when
the adjuster is turned counterclockwise 7 clicks.
Make sure that both fork legs are adjusted to the
same position.
(1) compression damping adjuster
(2) rebound damping adjuster
(1)
(2)
Front Suspension Air Pressure
(1) pressure release screw (2) O-ring
(2)
(1)
Front Suspension Damping
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