1
Installation of needles
Note: Before installing the needles, be sure to turn off the power.
Insert the needle upto the bottom of needle
clamp and tighten the screw keeping the
long groove side of needle face to face
Insufficient insertion
Gap
Long grooves are opposite
Needle distorted
2
Winding of the bobbin thread
Note: When bobbin thread is wound, keep the presser foot lifted.
Adjustment ●Tension of wound thread
Slack winding is recommended for polyester thread and
nylon thread.
●Conically wound thread
Move the thread guide toward smaller diameter of wound
thread layer.
●Amount of wound thread
Loosen the winding amount adjustment screw to decrease
thread winding amount and tighten the screw to increase
thread winding amount.
Winding tension
adjustment nut
Even winding
amount of 80%
of full capacity
Winding amount
adjustment screw
Thread guide
HOW TO USE
— 3 —
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
