2.5.2 Needle bar height
Caution: Danger of injury !
Switch off main switch.
Check and adjust needle bar height only when the s ewing machine is
switched off.
Standard checking
The needle bar height should be set in such a way that - at the largest
stitch length and in looping stroke position - the hook tip stands in the
lower third of the hollow groove.
–
Set stitch regulator lever and stitch length setting wheel
respectively to “largest stitch length”.
–
Arrest sewing machine in position I (looping stroke position).
–
Check position of the needle to the hook tip.
Correction
–
Set stitch regulator lever and stitch length setting wheel
respectively to “largest stitch length”.
–
Arrest sewing machine in position I (looping stroke position).
–
Remove plug from the drill-hole 3.
–
Loosen needle bar fastening screw (Phillips head screw).
–
Shift needle bar 4 with needle 2.
The needle bar must not be twisted when being shifted.
The hollow groove must point to the hook tip.
–
Tighten needle bar fastening screw.
–
Press plug into drill-hole 3.
A wrong adjustment of the needle bar height can have the following
consequences:
–
Damage to the hook tip.
–
Jamming of the needle thread between needle and needle
protection.
–
Skipped stitches and thread breakage.
GB
21
1
43
2
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