Invacare 9000 STANDARD WEIGHT User Manual

9   FRONT CASTERS

1.

Remove the dust cover.

2.

Remove the locknut that secures the fork to the caster headtube.

3.

Drop the front caster and fork out of the caster headtube.

4.

Slide in the new front caster and fork.

5.

Reassemble by reversing STEPS 1-3.

6.

Repeat STEPS 1-5 for the opposite front caster.

7.

To properly tighten caster journal system and guard against flutter, 

perform the following check:
A. Tip back of wheelchair to floor.
B.

Pivot both forks and casters to top of their arc simultaneously.

C. Let casters drop to bottom of arc (wheels should swing once 

to one-side, then IMMEDIATELY rest in a straight downward 

position).

D. Adjust locknuts according to freedom of caster swing.

8.

Test wheelchair for maneuverability.

9.

Readjust locknuts if necessary, and repeat STEPS 7-8 until correct.

10. Snap dust cover over the locknut and stem.

FIGURE 1   Installing/Replacing Front Casters and Forks

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After any adjustments, repair or service and before use, make sure all attaching hardware is tightened securely. Otherwise injury or 

damage may occur.

Front Caster and 

Fork

Caster Headtube

Locknut

Dust Cover