SEWING MACHINE DIV.20 MODEL 385. 17822490
MECHANICAL ADJUSTMENT
BACKLASH ( LOWER SHAFT GEAR )
TO CHECK:
1. REMOVE THENEEDLE PLATE AND BOBBIN HOLDER.
2. TURN THEHAND WHEEL SLOWLY TOWARD YOU UNTILTHETIPOF THESHUllLE HOOK (A)
ISBETWEENBOTH ENDS (B) OF THE FEED DOG.
3. ROTATE THE HOOK RACE CLOCKWISE AND COUNTER CLOCKWISE BY HAND AND
CHECK THE PLAY. ITSHOULD BEWITHIN 0.8 MM.
* IF THERE IS MORE THAN 0.8 MM BACKLASH BETWEEN THE GEARS, ADJUST AS
FOLLOWS.
ADJUSTMENT PROCEDURE:
1. REMOVE THE BED COVER AND LOOSEN SETSCREW (C).
2. TURN THE LOWER SHAFTBUSHING (ECCENTRIC BUSHING) (D) IN DIRECTION (E) WHEN
THE PLAY AT THE SHUTrLEHOOK TIP ISTOO SMALL.
3. TURN THE LOWER SHAFT BUSHING (ECCENTRIC BUSHING) (D) IN DIRECTION (F) WHEN
THE PLAY AT THE SHUTTLEHOOK TIP ISTOO LARGE.
4. TIGHTEN SETSCREW ( C ) SECURELY AFTER ADJUSTMENT.
CK THE PLA Y
LOWER SHAFT GEAR
(r3 (EJ
OF LOWER SHAFT BUSHING
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