Adjustment
14
1.05.09 Needle rise, hook clearance, needle height and needle guard
Requirement
With the stitch length set at "4.5" and in the needle rise position (see table)
1. The hook point 6 should be positioned at "needle centre" with a hook-to-needle clea-
rance of 0.05 – 0.10 mm.
2. The top of the needle eye should be positioned 0.8 mm below hook point 6. and
3. and needle guard 7 must touch the needle just lightly.
● Loosen both screws of the gear drive of hook 1 (under cover 2).
● Adjust hook 1 and hook bearing 3 (screws 4 and 5) in accordance with requirement 1.
● Without turning it, re-position the needle bar in accordance with the requirement 2, also
see Chapter 1.05.08 Preliminary adjustment of the needle bar.
Needle rise position
Model C: Balance wheel position 204° / 2.0 mm
Model D: Balance wheel position 206° / 2.4 mm
Fig. 1 - 09
0,8 mm
6
5
5
4
2
3
7
8
1
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