Special machines
Service Manual 867 Version 02.0 - 04/2015 97
20 Special machines
20.1 Machines with switchable needle bars:
20.1.1 Setting the needle bar height
Fig. 85: Needle bar height for machines with switchable needle bars I
The needle bar height cannot be set for machines with switchable nee-
dles. The height of the needles in relation to the hook tip is set using the
needle holders (1).
Proper setting
The height of the needle holders should be set such that the hook tip is on
the lower third of the groove when the stitch length is 0 and in loop stroke
position.
1. Set stitch length adjusting wheel to 0.
2. Lock the sewing machine in place at position 1 ( page 18).
3. Check the position of the needle in relation to the hook tip.
Faults caused by an incorrect setting
• Damage to the hook tip.
• Jamming of the needle thread between the needle and the needle
guard.
• Missing stitches and thread breakage.
WARNING
Risk of injury
Risk of crushing injuries and stab wounds from mov-
ing and sharp parts.
Switch off the sewing machine before checking and
setting the needle bar height.
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