Singer S-10 - Replacing the DC Motor and Adjusting the Motor Belt Tension

20
Replacing the DC Motor and Adjusting the Motor Belt Tension
To remove:
1. Remove the face cover, bed cover, front cover
and rear cover.
2. Remove the motor belt.
3. Remove the 2 setscrews and remove the DC
motor.
To attach:
4. Attach a new motor with the 2 setscrews.
5. Adjust the motor belt tension and tighten the
setscrews.
6. Attach the rear cover, front cover, bed cover and
front cover.
Adjusting the motor belt tension:
The motor belt should deflect 5 mm when 300 grams
of pressure is applied to the center of the belt.
1. Tighten the 2 setscrews loosely.
2. Adjust the belt deflection to 7-9 mm by moving
the DC motor up or down while pressing the cen-
ter of the belt with 300 grams of pressure.
3. Tighten the setscrews firmly.
DC motor
Setscrews
Setscrew
Motor belt
7-9 mm
300 grams pressure
DC motor
Setscrew