Special machines
100 Service Instructions 867 - 04.0 - 10/2019
20 Special machines
20.1 Machines with switchable needle bars
20.1.1 Adjusting the needle bar height
The needle bar height cannot be adjusted for machines with switchable
needles. The height of the needles in relation to the hook tip is adjusted
using the needle holders (1).
Proper setting
The height of the needle holders (1) should be set such that the hook tip
is in the lower third of the groove when the stitch length is 0 and in looping
stroke position.
Disturbances caused by an incorrect setting
• Damage to the hook tip
• Jamming of the needle thread between the needle and the needle
guard
• Skip stitches and thread breaking
Fig. 87: Adjusting the needle bar height (1)
To adjust the needle bar height:
1. Set the stitch length adjusting wheel to 0.
2. Lock the machine in place at position 1 ( p. 22).
WARNING
Risk of injury from sharp and moving parts!
Puncture or crushing possible.
Switch off the machine before you adjust the
needle bar height.
(1) - Needle holder
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