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SEWING MACHINE DIV. 20 MODEL 385.19001890
MECHANICAL ADJUSTMENT
BACKLASH (LOWER SHAFTGEAR)
TO CHECK:
1. TURN THE POWER SWITCH OFF.
2. REMOVE THE NEEDLE PLATEAND BOBBIN HOLDER.
3. TURNTHE HANDWHEEL SLOWLYTOWARD YOU UNTILTHETIPOF THESHUTI'LEHOOK (A) IS
BETWEENBOTH ENDS (B) OF FEEDDOG.
4, ROTATETHEHOOK RACE CLOCKWISE AND COUNTERCLOCKWISE BY FINGER. CHECK
THEPLAY. iTSHOULD BEWITHIN 0.8 MM.
"IFTHEREISMORE THAN 0.8 MM BACKLASH BEIWEEN THEGEARS, ADJUST AS FOLLOWS.
ADJUSTMENT PROCEDURE:
1. REMOVE THE BEDCOVER (SEEP.22) AND LOOSEN THE SCREW (C).
2. TURNTHE LOWER SHAFT BUSHING (D) (ECCENTRIC), IN THE DIRECTION "E"WHEN THE
PLAY ATSHUTTLEHOOK TIP ISTOO SMALL.
3. TURNTHE LOWER SHAFT BUSHING (D) (ECCENTRIC), IN THE DIRECTION "F" WHEN THE
PLAY ATSHUTTLEHOOK TIP ISTOO LARGE,
4. TIGHTENSCREW (C) SECURELYAFTERADJUSTMENT.
F
--_v_, LOWER SHAFTBUSHING (D) I
(B)
TIPOF SHUTI-LE
HOOK (A)
CHECK THE
PLAY
•LOWER SHAFT GEAR
GROOVE OF LOWER SHAFT BUSHING (D)
F E
31
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