Jack C4 - Maintenance Instructions; Needle Bar Height Adjustment

Maintenance instructions
1. Needle bar height adjustment
When the needle bar
comes to the heighest
point, and the distance
between needle to needle
plate is 10.5mm(4
threads) and
11.5mm(5threds),then
fasten the screw.
Screw of needle
bar adjustment
10.5mm
10.5mm