Setting Of The Stepmotor Of The Sewing Head - Husqvarna 1200 Service Manual

5 Setting of the stepmotor of the sewing head

Requirements
Set the needle at the upper turning position. The needle shall always get to the central
position, when the main switch is turned on repeatedly.
The distance between the zig-zag bearing of the needle bar frame and the stop lug shall be
equal on both sides 2,3mm.
Adjustment
- Remove the sewing head from the machine (p.52)
but let the cables be connected to the circuit board.
- Place the service casette into the front cover.
- Enter the service mode of the machine by pressing
the reverse feeding button and (-) stitch length
button while turning on the main switch.
-Turn the handwheel until the feed dog reaches its
highest position.
- Press button no(5) on the service casette/program
(= calibration position).
- Check the distance (=1,2mm) between the
calibration wing (A) and the calibration stop (C)
with the distance gauge 412 27 60-01.
Adjust by loosening the screw of the calibration
wing (A) and set distance.
- Press button no(6) on the service casette/program
(= centre position).
- Check the distance(2,3mm) between the zig-zag
bearing of the needle bar frame and the stop lug
with distance gauge 412 27 60-01).
- Adjust by undoing the screw of the cog wheel (B)
and turn the cog wheel until the correct distance is
obtained.
- Mount the sewing head into the machine, (P.54).
Thereafter set:
Setting the presser foot at right angles to the feeding direction (P.25).
The gap between the hook and the needle (P.28).
Setting the stitch plate in relation to the needle (P.29).
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26 Husqvarna service manual 104 72 30-26