Honda CRF450X 2005 User Manual

FRONT WHEEL/SUSPENSION/STEERING
Set the slider on V-blocks and measure the runout .
Turn
the slider and measure the runout using a dial
indicator.
Actual runout is 112 of the total indicator reading.
SERVICE LIMIT : 0.20 mm 10 .008 in)
Do not reuse the Replace if the service limit is exceeded, or the re are
slider if it is bent. scratches or nicks that will allow fork oil to leak past
the seals.
14-20
FORK SPRING
Measure the fork spring free length by placing it on
a
flat surface.
SERVICE LIMIT : 493 mm (19.4 in)
BUSHING/BACK-UP RING
Check the bushing for excessive wear or scratches.
If copper appears on the s urf ace, replace the bush-
ing.
Replace the back-up ring if there is distortion at the
points shown.
Remove any metal powde r from the slider and
guide bushings with a n ylon brush and fork oil.
FORK DAMPER
Check the fo rk dampe r for be nd s or damage.
Check the fork damper piston rod for bends, wear or
damage .
Check the fork damp er oper atio n by pumpi ng the
piston rod.
If the operation is not smoot h, fill the fork damper
with fork oi l and check the fork damper operation
again (page 14-25).
'05 - '07 shown:
SLIDER
BUSHC
G
r K\
", .
)~
I
-J
0
\
BACK-U\P RING
-
'05 - '07 shown:
DAMPER

Honda CRF450X 2005 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Valve Train	Unicam, four-valve
Transmission	Wide-ratio five-speed
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
Ignition	Solid-state CD with electronic advance
Final Drive	520 O-ring-sealed chain
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.4 inches travel
Induction	Keihin 40mm flat-slide carburetor