Adjusting The Drive Wheels Vertically - Otto Bock Start M4 XXL Instructions For Use Manual

6.2.2 Adjusting the drive wheels vertically

The vertical position of the drive wheels can be changed by vertically moving the drive wheel adapter in the frame.
Combined with adjusting the height of the caster wheels, this also allows the seat height to be optimally adjusted to
individual requirements.
Changing the drive wheel position has the following effects:
Drive wheel position
Move upwards
Move downwards
The drive wheel can be set to four height positions.
Start M4 XXL
1) Remove the wheels.
2) Remove both mounting screws on the drive wheel adapter (see fig. 3, item 3).
3) Slide the drive wheel adapter to the desired height position.
4) Reinsert and tighten the mounting screws to 10 Nm.
5) Check the height setting. Once changed, the left and right drive wheel adapters must both have the same ver­
tical position in the frame. Readjust if necessary.
6) If necessary: Readjust the height and alignment of the caster attachment device (see Page 13) as well as the
brakes (see Page 14).
Start M6 Junior
1) Remove the wheels.
2) Remove both mounting screws on the drive wheel adapter (see fig. 4, item 1).
3) Slide the drive wheel adapter to the desired height position.
4) Reinsert and tighten the mounting screws to 10 Nm.
5) For fine adjustment: To achieve additional drive wheel positions, the fitting can be moved in the slotted hole
of the drive wheel adapter. Loosen the respective hexagon nuts and counter nuts on both sides of the fitting,
slide the fitting and tighten the hexagon nuts / counter nuts to 50 Nm.
INFORMATION: After setting, the left and right fittings must be in exactly the same height position.
6) Check the height setting. Once changed, the left and right drive wheel adapters must both have the same ver­
tical position in the frame. Readjust if necessary.
7) If necessary: Readjust the height and alignment of the caster attachment device (see Page 13) as well as the
brakes (see Page 14).
Start M4 XXL, Start M6 Junior
Effects
• The higher the drive wheel position, the more the seat surface is tilted to
the rear
• Wheelchair is easier to tip backwards when crossing obstacles
• The change in the centre of gravity results in a lower, more stable seat
position in the wheelchair
• The seat height can be further adjusted in combination with a height
adjustment of the caster wheels.
• The lower the drive wheel position, the less the seat surface is tilted to the
rear
• Wheelchair is harder to tip backwards when crossing obstacles
• The seat height can be further adjusted in combination with a height
adjustment of the caster wheels.
Settings
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