Adjustment
70
Fig. 13 - 09
3
7
64-078
2
64-108
1
1
6
4
5
13
.12
Adjusting the drag link mechanism
Requirement
When the needle bar is at t.d.c.
1. The milled slot in shaft
3
should be in alignment with the milled slot of the cast iron bracket
7
.
2. The milled slot of crank
4
should be in alignment with the front edge of driving crank
6
.
●
Loosen screw
1
on the arm shaft.
●
Using the balance wheel, set the needle bar at t.d.c. and lock it with locking pin
2
.
●
Adjust shaft
3
in accordance with
requirement 1
with the aid of the needle rise gauge
(2.4 mm).
●
Tighten screws
1.
●
Turn crank
4
(screws
5
) in accordance with
requirement 2.
●
Remove locking pin
1
.
If the position described in
requirement 2
is not reached, driving crank
6
must be installed accordingly.
Summary of Contents for 3307-1 SERIES
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