13 - 2
Adjustment
49-020
1
5
4
6
3
13
.04
Control and adjustment aids
By marking the holes
1
and
3 - 6
with the adjustment pin (ø 5 mm), the desired
needle bar positions can be fixed exactly.
●
Turn the balance wheel until the needle bar is approximately in the desired position.
●
Insert the adjustment pin into the appropriate hole and apply pressure.
●
Turn the balance wheel slightly backwards and forwards, until the pin locks into the rear
crank recess, in this way blocking the machine.
Adjustment hole 1
= 0.6 mm past top dead centre of the needle bar (0.6 past t.d.c.)
Adjustment hole 3
= 0.6 mm past bottom dead centre of the needle bar (0.6 past b.d.c.)
Adjustment hole 4
= 1.8 mm past bottom dead centre of the needle bar (1.8 past b.d.c.)
Adjustment hole 5
= top dead centre of the needle bar (t.d.c.)
Adjustment hole 6
= 4.0 mm past bottom dead centre of the needle bar (4.0 past b.d.c.)
Fig. 13 - 01
49-020f
1
5
4
6
3
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