Shuttle Adjustments; Loop Lift And Distance Between Shuttle Beak And Needle - Duerkopp Adler 271 Service Manual

7. Shuttle adjustments

7.1 Loop lift and distance between shuttle beak and needle

0,1 mm
2
3
1
4
Regulation and inspection
The loop lift is the travel of the needle bar from BDC to the point at
which the shuttle beak is at the centre of the needle.
The loop lift is 1.8 mm.
With the sewing machine locked in position A the shuttle beak 1
should be at the centre of the needle.
The distance between the shuttle beak 1 and the needle should be
0.1 mm.
Caution: danger of injury
Turn off the main switch.
The loop lift and the distance between the shuttle beak and the needle
may only be adjusted with the sewing machine switched off.
Adjustment
–
Remove sewing foot, needle plate and feed dog.
Fit new needle.
–
Set the stitch regulator to "0".
–
Lock sewing machine in position A.
–
Undo fastening screws of the shuttle 4.
The screws can be reached through hole 3.
–
Set the shuttle beak 1 to the centre of the needle.
The distance between the shuttle beak 1 and the furrow of the
needle must be 0.1 mm.
In this position there is a distance of 0.4 mm between the shuttle 4
and the adjusting ring 2.
If the distance of 0.4 mm is not achieved, the shuttle-drive housing
should be adjusted accordingly (see section 7.2).
–
Retighten fastening screws of the shuttle 4.
–
Replace sewing foot, needle plate and feed dog.
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