Wheels And Tires; Tire Size - Arctic Cat 450 XC 2011 Service Manual

9. Remove the cap screws and lock nuts securing the A-
arms to the frame; then remove the A-arms.
NOTE: If removing the upper right A-arm, it will
be necessary to disconnect the brake hose from
the A-arm.
CLEANING AND INSPECTING
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
1. Clean all A-arm components using a pressure
washer.
2. Inspect the A-arm for bends, cracks, and worn bush-
ings.
3. Inspect the frame mounts for signs of damage, wear,
or weldment damage.
INSTALLING
1. Install the A-arm assemblies into the frame mounts
and secure with the cap screws and new lock nuts.
Only finger-tighten at this time.
2. Slide the knuckle onto the drive axle and into posi-
tion on the A-arms; then secure the knuckle to the A-
arms with cap screws and new lock nuts. Tighten to
35 ft-lb.
3. Tighten the hardware securing the A-arms to the
frame mounts (from step 1) to 35 ft-lb.
4. Apply grease on the drive axle splines; then install
the hub assembly onto the drive axle.
5. Secure the hub assembly with the nut. Tighten only
until snug.
6. Secure the brake caliper to the knuckle with the two
"patch-lock" cap screws (right side only). Tighten
the caliper to 20 ft-lb.
7. Compress the hand brake lever and engage the brake
lever lock; then secure the hub nut (from step 5) to
the drive axle. Tighten to 200 ft-lb.
8. Install a new cotter pin and spread the pin to secure
the nut.
9. Secure the shock absorber to the frame with a cap
screw and new lock nut. Tighten to 35 ft-lb.
10. Secure the shock absorber to the lower A-arm with a
cap screw and new lock nut. Tighten to 35 ft-lb.
11. Secure the boot guard to the lower A-arm with the
two cap screws. Tighten securely.
12. Install the wheel and tighten to 40 ft-lb.
13. Remove the ATV from the support stand.
112

Wheels and Tires

TIRE SIZE

Use only Arctic Cat approved tires when replacing
tires. Failure to do so could result in unstable ATV
operation.
The ATV is equipped with low-pressure tubeless tires
of the size and type listed in General Information. Do
not under any circumstances substitute tires of a differ-
ent type or size.
Do not mix tire tread patterns. Use the same pattern
type on front and rear. Failure to heed warning could
cause poor handling qualities of the ATV and could
cause excessive drive train damage not covered by
warranty.
TIRE INFLATION PRESSURE
Front and rear tire inflation pressure should be 40.0
kPa (5.7 psi).
REMOVING
1. Secure the ATV on a support stand to elevate the
wheels.
Make sure the ATV is solidly supported on the support
stand to avoid injury.
2. Remove the wheels.
NOTE: Keep left-side and right-side wheels sepa-
rated for installing them on their proper sides.
CLEANING AND INSPECTING
NOTE: Whenever a part is worn excessively,
cracked, or damaged in any way, replacement is
necessary.
1. Clean the wheels and hubs using a pressure washer.
2. Inspect each wheel for cracks, dents, or bends.
3. Inspect each tire for cuts, wear, missing lugs, and
leaks.
INSTALLING
Install each wheel on its hub. Tighten to 40 ft-lb.
NOTE: Make sure each wheel is installed on its
proper hub as noted in removing (the "rotation
arrow" (if applicable) must indicate forward direc-
tion of rotation).
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