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Setting the looper
Fig. 39: Setting the symmetry of the looper motion
(1) - Indicator
(2) - Gauge
Sequence
Before making adjustments, the following parts must be removed:
• Thread cutting device ( Section 3.6.1, pg. 20)
Setting steps
1. To ensure precise adjustments, secure the gauge (2), order number
2. Loosen the screws on the lower toothed belt wheel (3).
3. Turn the lower shaft such that the indicator (1) is above the marking on
4. When you turn the lower shaft, the indicator must swing out to the left.
5. Tighten the screws on the toothed belt wheel (3).
Information
If you do not have a gauge available, perform the adjustment as shown in
the drawings.
9.5 Setting the looper in the looper mounting
Check correct setting
The front of the looper should be positioned at an angle of 89° 30' to the
edge of the machine plate.
If there are two bloopers, the rear one must be aligned and tightened first,
followed by the front one.
Setting is performed using the gauge, order no. 0171 290010.
Service Instructions 610/630 - 00.0 - 10/2014
①
933 80192, to the looper drive housing and the indicator (1) to the looper
shaft.
the gauge (2) both in slot C and B.
WARNING
Risk of injury
Crushing and needle-prick injuries caused by moving
and pointed parts
Switch off the sewing machine before setting the looper.
②
(3) - Lower toothed belt wheel
③
47
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