Sec. 10 Adjustment Of Thread Tension - Singer 7422 Service Manual

Sec. 10 Adjustment of thread tension

Checking:
1. Set thread tension at the center of "AUTO" position.
2. Pull thread between tension discs and check thread tension value using 100 gr. tension gauge.
Measured value should be 40 to 50 g.
*When tension gauge is not available, do actual sewing and check balance of upper and lower
threads.
Adjustment:
1. Remove front cover and adjust by turning spring pressure adjustment screw.
*Turn it clockwise to increase tension.
*Turn it counter-clockwise to decrease tension.
- 20 -