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16
A
B
MB3150-GB
Figure 26
Figure 27
Adjusting the centre of gravity
Figures 26 and 27
The driving wheel can be adjusted to five
different positions in relation to the centre
of gravity.
This is shown on the scale (26A) on the
wheel block. Position 1 represents the best
anti-tipping position.
• Loosen the screw (26B) with a 27 mm
wrench, and unscrew until it stops.
• Adjust the casing of the driving wheel
forward or backward (Figure 27).
NB
It is important to ensure that the pins in the
wheel block go into the holes in the frame
and that the casing lies horizontally in the
track before tightening the screw.
Remember to adjust the brakes and
the anti-tip stabiliser after you have
adjusted the seat height and centre of
gravity.
NB
When changing the height and centre
of gravity, the driving wheels should be
adjusted first, followed by the height and
angle of the castor wheels.
Adjusting the chair