Honda CRF250R Owner's Manual page 141

Balance 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. Adjust the outer chamber air pressure
(page 138).
4. Remove the valve cap (1) and clean the area
around the balance chamber air valve (2).
5. Place a shop towel over the balance chamber
air valve.
6. Release the air pressure from the balance
chamber by pressing the valve center.
When releasing air pressure from the balance
chamber, the fork will be extended.
Spraying a small amount of fork oil from the
balance chamber air valve is normal when
releasing air pressure from the balance chamber.
This will not affect the fork performance.
(1) (2)
(1) valve cap
(2) balance chamber air valve
7. Adjust the balance chamber air pressure.
07AMJ-KRNA100
• Air fork pump
(USA only)
07AMJ-KRNA110
• Air fork pump adapter
(USA only)
When applying air pressure to the balance
chamber, the fork will be shortened.
Do not adjust the balance chamber air pressure to a
level that is outside the minimum or maximum
level.
The correct "cold" balance chamber air pressures
are:
Standard: 156 psi (1,075 kPa, 11.0 kgf/cm
Maximum 189 psi (1,300 kPa, 13.3 kgf/cm
Standard 156 psi (1,075 kPa, 11.0 kgf/cm
Minimum 131 psi (900 kPa, 9.2 kgf/cm
Increasing the balance chamber air pressure
reduces the rebound of initial range of fork travel.
(softer)
with standard inner chamber air pressure, standard
outer chamber air pressure and standard oil capacity:
Maximum
Standard
Minimum
Stroke
The higher or lower balance chamber air pressure
affects the initial range of fork travel.
Front Suspension Adjustments
8. Check that there is no air leakage. If there is
any air leakage, replace the air valve assembly.
9. Check that the valve cap is in good condition
and replace it if necessary.
10. Install and tighten the valve cap to the
specified torque:
0.4 lbf·ft (0.5 N·m, 0.1 kgf·m)
2 )
2 )
2 )
2 )
Full
Adjustments for Competition
139