Setting the drive
Service instructions 967 - 00.0 - 12/2014
25
6 Setting the drive
6.1 Setting the drive ratio
The machine is equipped with a 2-step pulley, by which the drive ratio be-
tween the drive motor and the machine can be changed, and the penetra-
tion force of the needle can be increased.
To change the ratio, the drive belt must be removed and the pulley
changed to the opposite position. The drive belt is then refitted and ten-
sioned.
Cover
• Drive belt cover ( page 13).
6.1.1 Removing the drive belt
Figure 16: Removing the drive belt
Setting steps
1. Undo the belt tensioner (3) clamping screws (4).
2. Rotate the tensioning roller (2) and belt tensioner (3).
3. Remove the ridged drive belt (1).
WARNING
Risk of injury
Crushing injuries from moving parts.
Switch off the sewing machine before checking and setting the
drive ratio.
(1) - Ridged drive belt
(2) - Tensioning roller
(3) - Belt tensioner
(4) - Belt tensioner clamping screws
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