2. Position of the lower toothed belt wheel
Caution: Danger of injury !
Switch off main switch.
Check and adjust the position of the lower toothed belt wheel
only when the sewing machine is switched off.
Standard checking
The lower toothed belt wheel 5 is axially and radially fixed o n shaft 6 via
core pin 3.
The position of the lower toothed belt wheel 5 is correct if core pin 3
(first core pin in direction of rotation) can be screwed in drill-hole 7 of
the shaft.
Correction
–
Loosen core pins 1 and 3 at the slip clutch 4.
–
Twist lower toothed belt wheel 5 with slip clutch 4 on shaft 6 and/or
shift axially.
It must be possible to screw core pin 3 (first core pin in direction of
rotation) in the drill-hole 7 of shaft 6.
–
Check all settings described hereafter and correct them, if
necessary.
4
2
1
4
5
3
67
1
4
5
3
2
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