Adjustment
71
Fig. 13 - 10
1
2
3
7
64-112
0,1 mm
1
2
5
6
4
●
Dismount thread brake.
●
Insert hook
1
so that screw
2
of collar
3
is on the surface of the hook shaft.
●
Slightly tighten screw
2
.
●
Switch on the machine and set parameter "610" at "1".
●
Turn the balance wheel in the direction of sewing until the needle bar is in its bottom
stroke.
●
Fit needle rise gauge
4
(2.4 mm) to needle bar frame
5
and fasten with C-clamp
6
.
●
Remove the needle rise gauge
4
.
●
Turn the balance wheel in the direction of sewing until C-clamp
6
is touching the needle
bar bearing
5
.
●
Adjust hook
1
(screws
2
and
7
) in accordance with the
requirement.
13
.13
Needle rise and hook clearance
Requirement
When the needle bar is positioned 2.4 after b.d.c. and parameter "610" is set at "1", the
point of hook
1
should be positioned at "needle centre" and be at a distance of
0.1 mm
from the needle.
Summary of Contents for 3307-1 SERIES
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