Setting The Thread Tension Of The Step Motor; The Setting Of The Thread Take-Up Spring - Husqvarna 1200 Service Manual

13 Setting the thread tension of the step motor

Requirements
The thread tension pulley shall always be at its starting position (5,5) when the main switch is
switched on and off repeatedly.
Adjustment
- Remove the front cover (P.35) but leave the cables connected to the circuit
board.
- Dismount the thread tension compl. (P.39), but leave the cable connected to the
circuit board.
-Insert the service casette into the front cover.
-Get into the service mode of the machine by pressing
the reverse feeding and (-) stitch length buttons while
switching on the main switch.
- Loosen the screw in the cog wheel (B) of the step motor.
- Turn the thread tension pulley to 0.
- Press button n 7 on the service casette.
- Tighten the screw.
- Check according to requirements.

14 The setting of the thread take-up spring

Requirements
The casing (C) should be set in such a way, that the thread take-up spring has finished its
movement when the needle eye reaches the fabric after a completed stitch.
Check at straight stitching 2.5 mm in fine fabric.
Adjustment
The stop in the adjustment casing, i.e. the limitation of the movement of the spring, can be
adjusted by means of a screwdriver, which should be applied at the upper part of the casing.
Exchange of the thread tension device.
(P.52).
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