Honda CRF250R, Owner'S Manual

Page: 140 / 183

138
Adjustments for Competition
Front Suspension Adjustments
The correct “cold” inner chamber air pressures are:
Standard:
156 psi (1,075 kPa, 11.0 kgf/cm 2 )
The higher or lower inner chamber air pressure
affects the entire range of fork travel.
4. Check that there is no air leakage. If there is
any air leakage, replace the air valve assembly.
5. Check that the valve cap is in good condition
and replace it if necessary.
6. Install and tighten the valve cap securely.
7. Adjust the outer chamber air pressure (this
page).
Outer Chamber Air Pressure
When adjusting the left fork air pressure, adjust the
inner chamber air pressure first, then the outer
chamber air pressure, and finally the balance
chamber air pressure.
1. Place an optional workstand under the engine,
so that the front wheel is off the ground.
2. Adjust the inner chamber air pressure
(page 137).
3. Remove the valve cap (1) and clean the area
around the outer chamber air valve (2).
4. Adjust the outer chamber air pressure.
• Air fork pump
07AMJ-KRNA100
(USA only)
• Air fork pump adapter
07AMJ-KRNA110
(USA only)
When releasing air pressure from the outer
chamber, the fork will be shortened.
When applying air pressure to the outer chamber,
the fork will be extended.
Do not adjust the outer chamber air pressure to a
level that is outside the minimum or maximum
level.
The correct “cold” outer chamber air pressures are:
Standard:
12 psi (80 kPa, 0.8 kgf/cm 2 )
The higher or lower outer chamber air pressure
affects the entire range of fork travel.
5. Check that there is no air leakage. If there is
any air leakage, replace the air valve assembly.
6. Check that the valve cap is in good condition
and replace it if necessary.
7. Install and tighten the valve cap securely.
8. Adjust the balance chamber air pressure
(page 139).
Minimum 141 psi (975 kPa, 9.9 kgf/cm
2
)
Standard 156 psi (1,075 kPa, 11.0 kgf/cm 2 )
Maximum 170 psi (1,175 kPa, 12.0 kgf/cm 2 )
with standard outer chamber air pressure, standard
balance chamber air pressure and standard oil
capacity:
Stroke
Fo
rce
Maximum
Standard
Minimum
Full
(1) valve cap (2) outer chamber air valve
(1) (2)
Minimum 9 psi (60 kPa, 0.6 kgf/cm
2
)
Standard 12 psi (80 kPa, 0.8 kgf/cm 2 )
Maximum 15 psi (100 kPa, 1.0 kgf/cm 2 )
with standard inner chamber air pressure, standard
balance chamber air pressure and standard oil
capacity:
Stroke
For
ce
Maximum
Standard
Minimum
Full