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SEWINGMACHINEDIV.20 MODEL385.19001890
MECHANICAL ADJUSTMENT
OVER LOAD (i)
* "STOPFOR SAFETYPURPOSES"APPEARS ON THESCREENWHEN THEMACHINE ISOVER-
LOADED
TO CHECK:
1, CHECK THETHREAD TAKE-UP LEVERAREA. IFTHREAD ISJAMMED, REMOVE THETHREAD
(SEE P.63). ALSO, CHECK "MOTOR BELTTENSION" (SEE P.57) AND "BACKLASH OF THE
SHUTi'LEHOOK" (SEE P.31),
2. TURNTHE HANDWHEEL TOWARD YOU TO CHECK THE TORQUE. IF IT ISHEAVY, ADJUST
THEFOLLOWING:
PREPARATION:
1. REMOVE THETOP COVER (SEEP.19), BELTCOVER (SEEP.20), BASE AND BED COVER
(SEEP.22).
2. TURNTHE HANDWHEEL TOWARD YOU UNTIL THE NEEDLE BAR COMES TO ITSHIGHEST
POSITION.
MARK BOTH THETIMING BELT(A) AND LOWER SHAFTGEAR (B) WITH A FELT-TIPPEN, AS
ILLUSTRATED.
3. REMOVE THEMOTOR BELTAND THETIMING BELT(A),
ADJUSTMENTPROCEDURE:
UPPERSHAFT
I. LOOSEN THE SCREW (C).
2. SLIDETHE UPPER SHAFT RING (D) TO THELEFTSO THERE IS NO PLAY AND THE SHAFT
TURNSSMOOTHLY.
3. TIGHTENTHESCREW (C) AND MAKE SURETHEUPPERSHAFT(E) HAS NO PLAY AND TURNS
SMOOTHLY BY TURNING THEHANDWHEEL.
SCREW (C)
THREAD TAKE-UP LEVER
UPPERSHAFT(E)
RING (D)
MOTOR BELT
TIMING BELT(A)
LOWER SHAFT
GEAR (B)
42
MARKING
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