MY20K10 - 12_1.0_11.01.2021
89
Cleaning and servicing
7.4.9
Checking the USB port
Regularly check the position of the
cover on the
USB port
and adjust it as necessary.
7.4.10 Checking the chain tension
1
Check the chain tension in three or four
positions, turning the crank a full revolution.
Figure 88: Checking the chain tension
2
If the
chain
can be pushed more than 2 cm, the
chain
will need to be re-tensioned by your
specialist dealer.
3
If the
chain
can only be pushed up and down
less than 1 cm, the
chain
needs to be
slackened as required.
The ideal chain tension has been achieved if
the
chain
can be pushed a maximum of 2 cm in
the middle between the pinion and the toothed
wheel. The crank must also turn without
resistance.
4
If a hub gear is fitted, the rear wheel must be
pushed backwards and forwards to tighten the
chain. Contact your specialist dealer.
5
Check the handlebar grip is firmly in position.
7.4.11 Adjusting gear shift
If the gears cannot be selected smoothly, the play
in the shift cable will need to be adjusted.
1
Carefully pull the
setting screw
away from the
shifter housing, turning it as you do so.
Figure 89: Twist grip with setting screw (1)
2
Pull gently on the shift cable outer sleeve to
adjust the play in the shift cable.
A play between 0.5 and 1.5 mm is ideal
A shift cable play of more than 2 mm has a
negative effect on the shift quality and reduces
the shift cable service life.
Figure 90: Twist grip with setting screw (1)
Notice
Excessive chain tension increases wear. If the
chain tension is too low, there is a risk that the
chain
will slip off the
chain wheels
.
Check the chain tension once a month.
2 cm
1
0,5 - 1,5 mm
