White 228 Superlock Sewing Machine Instruction Manual.
Includes:
Threading your machine.
Lower looper thread tension control.
Replacing thread spools.
Differential feed.
Thread guide pole.
Tension release lever.
Spool pin base.
Upper looper.
Moving cutter.
Needle plate.
Connector socket.
Adjusting machine balance.
Changing light bulb.
Parts list.
Cleaning.
Much more!
32 page instruction/owners manual.
PDF download.


