Adjustment
13 - 12
● 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.
Fig. 13 - 10
1
2
3
7
64-033
5
6
64-112
0,1 mm
1
2
4
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.
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