Singer Centurion 121D200A - Tension Release Mechanism; Arm Shaft

DISASSEMBLY SEQUENCE
TENSION RELEASE MECHANISM
1. Remove lifting link screw and link.
2. Remove tension releasing lever mount
ing screw, lever and spring.
3. Remove hand lifting lever mounting
screw and lever.
4. Remove tension releasing pin.
Z
ARM SHAFT
1. Loosen set screws (2 ea.) In each of the components named In the Illustration below.
The handwheel should then be removed, exposing the right end of the shaft.
2. With a soft-faced mallet, lightly
tap arm shaft from right to left until front arm shaft
bearing Is free of casting. Pull arm shaft from machine, right to left.
Counterweight
Hand Wheel
Timing Belt Pulley
& Bearing Assembly
19
Bobbin Winder Drive
Intermediate Bearing
From the library of: Superior Sewing Machine & Supply LLC