Husqvarna Viking Automatic 21 - User Manual

SERVICE
MANUAL
for
VIKING
home
sewing
machine
class
21

Summary

Adjusting the machine for straight stitching

Timing the needle swing

Procedure for setting the needle swing for timing.

Setting the presser bar height

Centring needle in throat plate hole

Setting centre position for zig-zagging

Procedure to set the zig-zag center position.

Tangential adjustment of sewing hook

Procedure for tangential adjustment of the sewing hook.

Setting the needle bar height

Setting clearance between sewing hook and needle

Procedure to set clearance between hook and needle.

Setting the feed dog height

Timing the feed

Lateral setting of the feed dog

Procedure for lateral adjustment of the feed dog.

Setting the thread giver

Procedure for setting the thread giver tension.

Setting the take-up spring tension

Changing camshaft drive belt

Husqvarna Viking Automatic 21 Specifications