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13
Needle rise, needle height and bobbin case position stop
.06.06
Requirement
1. With the needle bar at 1.8 past BDC (hole 4), the hook point should be positioned on
the right side of the needle.
2. In the needle rise position, the top edge of the needle eye should be positioned 0.8
mm below the hook point and
3. there should be a distance of at least 0.5 mm between the projection of bobbin case
position stop 4 and the base of the retaining groove.
Fig. 13 - 08
Position the needle bar at 1.8 past BDC.
Turn the hook (screw 1) without moving it according to requirement 1.
From needle bar position 1.8 past BDC, position the hook point in the center of the
needle (needle rise position) by turning the handwheel in the direction of rotation.
Move needle bar 2 (screws 3) without turning it according to requirement 2.
Mount bobbin case position stop 4 according to requirement 3.
1
4
Adjustment
6
3
4
1
5
6
3
4
1
5
2
3
13 - 9
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