Honda CRF450X 2008 Service Manual

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Remove the impeller, washer and water pump shaft
from the right crankcase cover.
Check the water pump shaft for wear or damage.
T
urn the inner ra ce of the water pump shaft bearing
with your finger.
The bearing
should turn smoothly and quietly.
Also check
that the bearing outer race fits tightly in
the
right crankcase cover.
Replace the
water pump shaft bearing if the inner
race does n ot turn smoothly, quietly, or if the outer
race fits loosely in the right crankcase cover.
Check the mechanical seal for damage or deteriora-
tion.
Replace the mechanical seal if necessary (page 7-12).
COOLING SYSTEM
WA TER PUMP SHAFT
RIGHT CRIINKCA'5 E COVE R
WA TE R PUMP SHAFT
ME·CH',NI'<:AlSEAl
7- 11
"

Honda CRF450X 2008 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Transmission	5-speed
Final Drive	#520 chain; 13T/51T
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Induction	Keihin 40mm carburetor
Ignition	CD with electronic advance
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment; 12.4 inches travel
Trail	4.6 inches