Honda 450X 2005, Owner'S Manual & Competition Handbook

Page: 126 / 180

122
Adjustments for Competition
Rear Suspension Adjustments
Pin spanners should be used for turning the lock
nut and adjusting nut. See page 163 for optional
pin spanners.
Spring pre-load length (Standard spring)
Standard: 10.18 in (258.5 mm)
Min. : 9.8 in (249 mm)
Spring pre-load length (Optional spring)
Min. (Softer, 5.30 kgf/mm): 9.9 in (251 mm)
Min. (Stiffer, 5.70 kgf/mm): 9.9 in (251 mm)
Min. (Stiffer, 5.90 kgf/mm): 9.8 in (250 mm)
The rear suspension can be adjusted for the
rider’s weight and riding conditions by changing
the spring pre-load and the rebound and
compression damping.
The rear shock absorber assembly includes a
damper unit that contains high pressure nitrogen
gas. Do not attempt to disassemble, service, or
dispose of the damper; see your Honda dealer.
The instructions found in this owner’s manual are
limited to adjustments of the rear shock absorber
assembly only.
Puncture or exposure to flame may also result in
an explosion, causing serious injury.
Service or disposal should only be done by your
Honda dealer or a qualified mechanic, equipped
with the proper tools, safety equipment and the
Honda Service Manual.
If your CRF is new, put enough part-throttle
break-in time (about one hour) on it to ensure
that the suspension has worked in.
Rear Suspension Spring Pre-Load
An optional pin spanner is available for turning
the lock nut and adjusting nut to adjust spring
pre-load.
1. Place a workstand under the engine to raise
the rear wheel off the ground.
2. Lift the subframe to the uplight position
(page 39).
3. Check that the spring preload is adjusted to
the standard length. Adjust as necessary by
loosening the lock nut (1) and turning the
adjusting nut (2).
Each complete turn of the adjuster nut
changes the spring length by 1/16 in (1.5
mm).
(1) lock nut (3) pin spanners
(2) adjusting nut (4) spring length
To increase spring pre-load:
Loosen the lock nut with the optional pin spanner
(3) and turn the adjusting nut to shorten the
spring length (4). Do not shorten to less than:
9.8 in (249 mm)
To decrease spring pre-load:
Loosen the lock nut with the optional pin spanner
(3) and turn the adjusting nut to increase the
spring length (4). Do not increase to more than:
10.22 in (259.5 mm)
Each turn of the adjuster changes spring length
and spring pre-load. One turn equals: spring
length/spring pre-load:
0.06 in (1.5 mm) / 18.1 lbs (8.2 kg)
(3)
(1)
(2)
(4)