11
IMPORTANT!
ALL CASTER STEMS MUST BE ADJUSTED TO THE SAME HEIGHT. NEVER ATTEMPT
TO CHANGE THE FRAME ANGLE WITH THE CASTER POSITION. UNEQUAL CASTER
POSITION WILL REDUCE THE CHAIR’S STABILITY AND MAY RESULT IN TIPPING.
Rear Wheel Height Adjustment
Tools needed: ¾” socket wrench, ¾” wrench, Two 1-1/8” wrenches or adjustable wrenches
1. Remove hubcap from one wheel by twisting hubcap counter clockwise.
2. Remove axle bolt and wheel assembly from axle receiver on frame.
3. Remove axle receiver from axle plate.
4. Insert axle receiver in the desired hole in the axle plate and secure in place with lock
washer and nut. (Lock washer and nut should be on the outside of the chair.)
5. Insert axle and wheel assembly onto axle receiver and tighten axle nut until wheel
assembly is secure. (Do not over-tighten as wheel must spin freely.)
6. Replace hubcap by turning it counter clockwise with wheel stationary.
7. Repeat steps 1 to 6 for other wheel.
8. Pull out on both wheels to confirm wheels are firmly in place.
Self-Propel Rear Wheel Fore/Aft Adjustment - Models SP, SPHD
The 22” or 24” wheels have a fore/aft adjustment range of 3½”.
With the axle plates in the trailing position (lower edges of plates behind top edge):
the axle position can be adjusted infinitely from 2” to ½” behind the centre line of the back post.
With the axle plates in the leading position (lower edges of plates ahead of upper edges): the
axles can be adjusted infinitely from 1½” in front of the centre line of the back post to directly at
the centre line of the back post.
Tools needed: two 7/16” wrenches, ¾” socket wrench, ¾” wrench, 5/32” hex key
1. Remove hubcap of one wheel by twisting hubcap counter clockwise.
2. Loosen and remove axle bolt and nut.
TIP: Lying the chair on one side while adjusting the other simplifies this procedure.
3. With wheel detached, loosen (do not remove) button head bolts on the lower portion of
the back mounting plate.
4. Loosen (do not remove) lower axle plate clamp bolts.
5. Adjust axle plate, noting precise position to mirror with other axle plate.
6. Tighten clamp bolts and button head bolts on lower portion of back mounting plate.
7. Replace wheel, axle bolt and nut.
8. Tighten axle bolt and nut until secure.
9. Replace hubcap by turning it counter clockwise with wheel stationary.
10. Repeat steps 1 to 9 for other wheel. Take extra care to align wheels properly.
IMPORTANT!
MOVING THE REAR WHEELS FORWARD AND INCREASING THE BACKREST ANGLE
WILL SIGNIFICANTLY DECREASE REARWARD STABILITY. IT IS ESSENTIAL THAT A
STABILITY CHECK BE PERFORMED AFTER ANY OF THESE ADJUSTMENTS ARE
MADE. STABILITY CHECKS SHOULD BE PERFORMED WITH AN ATTENDANT BEHIND
THE CHAIR AND WITH ANTI-TIPPERS PROPERLY INSTALLED AND ADJUSTED.
