Adjustment Of The Position Of Lower Line Fixed Knife; Fixed Knife Fasten Screw - Jack JK-T781E Series Manual

19.0：Adjustment of the position of lower line fixed knife
Adjustment stardard: the distance between fixed knife and needle plate hole is 0.3-0.5mm.
Adjustment influence: if the distance between the fixed knife and the needle plate hole is too
close, the thread breakage will happen when you sew.
Adjustment method:
1.Lose the fixed knife fasten screw.
2. Adjust fixed knife, make the distance
between the fixed knife and the needle
plate hole to 0.3-0.5mm and then
fasten the screw.

fixed knife fasten screw

fixed
knife