Honda CRF250R 2006 User Manual

42 Servicing Your Honda
Cooling System Inspection
1. Check the cooling system for leaks (see the
Honda Service Manual for troubleshooting of
leaks).
2. Check the water hoses (1) for cracks,
deterioration, and clamp bands for looseness.
3. Check the radiator mount for looseness.
4. Make sure the overflow tube (2) is connected
and not clogged.
5. Check the radiator fins for clogging.
6. Check the water leakage check hole (3) below
the water pump cover (4) for leakage. Make
sure the hole remains open. If water leaks
through the check hole, the water pump seal is
damaged. If oil leaks through the check hole,
the engine oil seal is damaged. See the
Honda Service Manual or consult your Honda
dealer for replacing the water pump seal or
the engine oil seal. Both seals should be
replaced at the same time.
Coolant Replacement
Refer to Safety Precautions on page 19.
Coolant should be replaced by your Honda
dealer, unless you have the proper tools and
service data and are mechanically qualified.
Refer to the Honda Service Manual
(page 154).
To properly dispose of drained coolant, refer to
You & the Environment, page 136.
Improper disposal of drained fluids is harmful to
the environment.
NOTICE
Coolant
WARNING
Removing the radiator cap while the
engine is hot can allow the coolant to
spray out, seriously scalding you.
Always let the engine and radiator cool
down before removing the radiator cap.
(2)
(1)
(4)
(3)
(1) water hoses
(2) overflow tube
(3) water leakage check hole
(4) water pump cover

Honda CRF250R 2006 Specifications

General

Engine Type	Liquid-cooled single-cylinder four-stroke
Displacement	249 cc
Bore x Stroke	78.0mm x 52.2mm
Compression Ratio	12.9:1
Transmission	5-speed
Ignition	CDI
Final Drive	Chain
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Front Brake	Single 240 mm disc with twin-piston caliper
Rear Brake	Single 240 mm disc
Front Tire	80/100-21
Rear Tire	100/90-19
Wheelbase	58.5 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustability separated into low-speed (13 positions) and high-speed (3.5 turns)
Fuel System	Carburetion: Keihin FCR 40 mm flat-slide carburetor with throttle position sensor (TPS)