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c) Changing a tyre
The tyres are fixed on the wheel rim and cannot be removed. Therefore, if a tyre is worn, the entire wheel must be
replaced.
Loosen the wheel nut (A) with a suitable socket wrench.
Pull the wheel off the wheel axle (C).
Attach the new wheel so that the hex socket on the inside
of the wheel rim fits exactly over the wheel hub nut (B).
Screw the wheel onto the wheel axle (C) using the wheel
nut (A) you removed at the beginning.
Do not apply any force when tightening the wheel nut,
otherwise the wheel will not spin freely and the drive may
be damaged.
The wheel hub nut (B) may get stuck in the wheel rim when the wheel is removed or it may come loose from
the wheel axle (C). Ensure that the drive pin (D) does not fall off.
During later replacement of the wheel always check that the drive pin (D) is exactly in the centre of the
wheel axle (C) and is in the corresponding groove on the wheel hub nut (B) (only one side of the wheel hub
nut (B) has a drive pin groove).
If the drive pin (D) is missing, no torque can be transferred from the motor to the wheel and the wheel will
spin freely. The same applies if the drive pin (D) is not in the groove on the wheel hub nut (B).
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