Honda CRF250R User Manual

Front Suspension Adjustments
(cont’d)
Adjustments for Competition 137
Recommended Setting
Begin with the standard setting. If the suspension
is too stiff/soft, adjust to the stiff/soft setting of the
recommended setting.
When adjusting the left fork to the recommended
setting, adjust the rebound and compression
damping adjuster to the standard settings.
Standard:
Soft:
Medium-stiff:
Stiff:
If the suspension is too stiff/soft, adjust according
to the Suspension Adjustment Guidelines
(page 145).
Inner 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. Remove the valve cap (1) and clean the area
around the inner chamber air valve (2).
3. Adjust the inner chamber air pressure.
• Air fork pump 07AMJ-KRNA100
(USA only)
• Air fork pump adapter 07AMJ-KRNA110
(USA only)
When releasing air pressure from the inner
chamber, the fork will be shortened.
When applying air pressure to the inner chamber,
the fork will be extended.
Do not adjust the inner chamber air pressure to a
level that is outside the minimum or maximum
level.
Inner chamber
air pressure
156 psi
(1,075 kPa, 11.0 kgf/cm
2
)
Outer chamber
air pressure
12 psi
(80 kPa, 0.8 kgf/cm
2
)
Balance chamber
air pressure
156 psi
(1,075 kPa, 11.0 kgf/cm
2
)
Inner chamber
air pressure
149 psi
(1,025 kPa, 10.5 kgf/cm
2
)
Outer chamber
air pressure
10 psi
(70 kPa, 0.7 kgf/cm
2
)
Balance chamber
air pressure
149 psi
(1,025 kPa, 10.5 kgf/cm
2
)
Inner chamber
air pressure
163 psi
(1,125 kPa, 11.5 kgf/cm
2
)
Outer chamber
air pressure
13 psi
(90 kPa, 0.9 kgf/cm
2
)
Balance chamber
air pressure
163 psi
(1,125 kPa, 11.5 kgf/cm
2
)
Stiff
Stroke
Medium-stiff
Standard
Soft
Force
Full
Inner chamber
air pressure
170 psi
(1,175 kPa, 12.0 kgf/cm
2
)
Outer chamber
air pressure
15 psi
(100 kPa, 1.0 kgf/cm
2
)
Balance chamber
air pressure
170 psi
(1,175 kPa, 12.0 kgf/cm
2
)
(1) valve cap (2) inner chamber air valve
(2)
(1)

Honda CRF250R Specifications

General

Engine Type	Liquid-cooled single-cylinder four-stroke
Displacement	249cc
Bore x Stroke	79.0mm x 50.9mm
Compression Ratio	13.9:1
Starter	Electric
Transmission	Close-ratio 5-speed
Final Drive	Chain
Front Brake	Single 260mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	100/90-19
Wheelbase	58.3 inches
Seat Height	37.8 inches
Ground Clearance	13.1 inches
Fuel Capacity	1.7 gallons
Valve Train	Unicam OHC, four-valve
Induction	Programmed Fuel Injection (PGM-FI)
Throttle Bore	44mm
Ignition	Full transistorized ignition
Front Suspension	49mm inverted Showa coil-spring fork with rebound and compression damping adjustability; 12.2 inches travel
Rear Suspension	Pro-Link Showa single shock with adjustable spring preload, rebound and compression damping; 12.4 inches travel
Rake	27.2°
Trail	115mm (4.5 inches)