Backlash (Lower Shaft Gear) - Kenmore 385.16221300 Service Manual

MECHANICAL ADJUSTMENT
BACKLASH ( LOWER SHAFT GEAR )
TO CHECK:
1. REMOVE THE NEEDLE PLATE AND BOBBIN HOLDER.
2. TURN THE HANDWHEEL SLOWLY TOWARD YOU UNTIL THE TIP OF THE SHUTTLE
HOOK (A) IS BETWEEN BOTH ENDS (B) OF THE FEED DOG.
3. ROTATE THE HOOK RACE CLOCKWISE AND COUNTER CLOCKWISE BY HAND, AND
CHECK THE PLAY. IT SHOULD BE WITHIN 0.8 MM (0.03").
* IF THERE IS MORE THAN A 0.8 MM (0.03") BACKLASH BETWEEN THE GEARS,
ADJUST AS FOLLOWS.
ADJUSTMENT PROCEDURE:
1. REMOVE THE BED COVER (SEE P.7), AND LOOSEN HEXAGONAL SOCKET SCREW
(c).
2. TURN THE LOWER SHAFT BUSHING (ECCENTRIC BUSHING) (D) IN DIRECTION (E)
WHEN THE PLAY AT THE SHUTTLE HOOK TIP IS TOO SMALL.
3. TURN THE LOWER SHAFT BUSHING (ECCENTRIC BUSHING) (D) IN DIRECTION ( F )
WHEN THE PLAY AT THE SHUTTLE HOOK TIP IS TOO LARGE.
4. TIGHTEN THE HEXAGONAL SOCKET SCREW ( C ) SECURELY AFTER ADJUSTMENT.
(A)
CK THE PLA Y
,7 "_N! !i
LOWER SHAFT GEAR
GROOVE OF LOWER SHAFT BUSHING
(F) (E)
28