Karman S-Ergo 300G Owner's Manual page 16

4.1.3.2 Rear Wheel
Your wheelchair may be supplied with quick-release wheels. If so, please follow
the instructions below.
4.1.3.2.1 Rear Wheel Removal
Support the weight of the chair with one hand by holding the push handle.
Depress the hub cover and hold down the quick-release mechanism.
Remove the wheel. (See Figure 4.15)
4.1.3.2.2 Rear Wheel Attachment
Pick up the wheel: Hold the center of the rear wheel by grasping two adjacent
spokes with four fingers of one hand, use the thumb to depress and keep
depressed the quick-release. Take the quick-release axle and depress the
button in its center. This retracts the bearings at the opposite end of the axle.
This will allow you to push the axle through the center of the hub of the wheel.
Your wheels are now ready to be assembled to the frame of your wheelchair.
First ensure that the brake is in the OFF position. Take up the assembled wheel
and axle and depress the button in the center of the axle, as above. This
retracts the ball bearings that will allow you to push the axle into the wheel
bracket that is located on the lower rear frame of the wheelchair. When you
remove your thumb from the button on the axle, the ball bearings should be
visible protruding from the axle at the back of the wheel bracket. This will secure
the wheel safely in the frame. (See Figure 4.16)
CAUTION:
You must make sure that the axle is fully located in the wheelchair bracket and
that the ball bearings are fully open and have positively attached the wheel in
the frame.
The rear wheel can be mounted at different positions on the frame to alter the
seat height and overall stability of the chair. Changing the wheel position
should be carried out by your approved repairer or therapist.
Figure 4.15 Figure 4.16
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