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Position of the hook and needle
10.2 Setting the loop stroke position
The loop stroke is the path length from the lower dead center of the needle
bar up to the position where the hook tip is exactly on the vertical center
line of the groove for the needle.
Fig. 31: Setting the loop stroke position (1)
The loop stroke is precisely 2 mm.
Order
First, check the following settings:
• Needle bar linkage ( p. 43)
• A straight and undamaged needle must be inserted
Proper setting
Machine locked in place at position 1 and stitch length set to 0.
The hook tip (2) points exactly to the vertical center line (1) of the
Disturbance caused by an incorrect setting
• Missing stitches
Service Instructions 667 - 00.0 - 04/2016
WARNING
Risk of injury from sharp and moving parts!
Crushing and puncture possible.
Switch off the machine before you check and set
the loop stroke position.
①
②
(1) - Vertical center line of the needle
( Operating Instructions, chap. Inserting and replacing the needle)
needle.
(2) - Hook tip
49
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