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Adjustment
13
Needle thread tension release
.07.14
13 - 34
Requirement
1. When the thread trimmer is in the resting position, trip 5 should be engaged and have
a distance of 0.5 mm to release olive 1.
2. When trip 5 is positioned at the highest point of release olive 1, the tension disks of
thread tension should be at least 0.5 mm apart.
0.5 mm
2
Fig. 13 - 33
Turn release olive 1 (nut 2) according to requirement 1.
Allow the presser foot to rest on the needle plate.
Pull out the thread between the tension disks.
Pull down pull rod 3 (screw 4) as far as it will go.
Position the needle bar at BDC and actuate the engaging lever by hand.
Turn the handwheel until trip 5 is positioned at the highest point of release olive 1.
The tension disks must now be at least 0.5 mm apart.
By turning the handwheel, position the rock shaft in the starting position.
Trip 5 must now be engaged and needle thread tension fully effective.
Lightly grease release olive 1.
1
5
3
4
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