Singer Centurion 121D200A - Page 28

ASSEMBLY SEQUENCE
FEED REVERSE DRIVE ASSEMBLY
1. From left to right, insert long shaft through casting, collar and dynamic damper as
sembly.
2. Insert feed reversing drive assembly onto long shaft end, fitting the flattened surface.
Align groove of shaft with side face of drive assembly.
3. From right to left insert short shaft through casting into drive assembiy, until groove
aligns with side face.
4. Tighten set screws in drive assembly.
5. Tighten set screws of dynamic damper onto fiats of shaft.
6. Move entire assembiy to left until touching casting. Move collar to right until touching
casting. Eliminating any end play, tighten set screws in collar.
7. Install crank and attach vertical link to crank.
8. Rotate feed reversing lever shaft until sufficient spring pressure is attained to hold
reversing lever In upward position. Tighten shaft locking set screw (Fig. A, page 27).
Dynamic Damper
Long Shaft
Collar
Feed Reversing
Drive Assembly
Vertical Link
Crank •
Short Shaft
Set Screws
FIG. B
27
From the library of: Superior Sewing Machine & Supply LLC