Kenmore 385. 18630890 Service Manual page 6

SEWING MACHINE D IV.20 MODEL 3 85,18630890
CONDITION
6= NOISY
OPERATION
7.DEFORMATION
PA_ERN
8,IMPROPER
BUTIONHOLE
CAUSE REFERENCE
P27 1_ BACKLASH BETWEEN
SHUTTLE HOOK GEAR AND
LOWER S HAFT GEAR tSTOC
GREAT.
2.LOWER SHAFT GEAR IS
HOW TOFIX
SEE M ECHANICAL
ADJUSTMENT "BACKLASH
(LOWER SHAFT GEAR)."
EUM1NATE THE LOOSENESS.
LOOSE,
3.INAPPROPRIATE BELT
TENSION,
4,NOT ENOUGH O IL
SEE MECHANICAL
ADJUSTMENT "MOTOR
BELT TENSION."
OILALLMOVING PARTS.
5.UPPER SHAFT iSLOOSE
1,INAPPROPRIATE FEED
BALANCE
2.INAPPROPRIATE ZIGZAG
SYNCHRONIZATION,
3, UPPER THREAD TENSION
IS TOO STRONG_
I,BUTTONHOLESTITCH
BALANCE IS NOT CORRECT;
2 IMPROPERSIZEON AUTO
BUTTONHOLE
3>CHANGING TO BAR TACK
ISTOO FASTOR WILL NOT
WORK.
ELIMINATETHELOOSENESS
SEEMECHANICAL
ADJUSTMENT"STRETCH
STITCHBALANCE°"
SEEMECHANICAL
ADJUSTMENT"NEEDLE
SWING,"
SEEMECHANICAL
ADJUSTMENT"TOP TENSION_
SEEMECHANICAL
ADJUSTMENT"BUTTONHOLE
STITCHBALANCE."
SEEMECHANICAL
ADJUSTMENT"BUTTONHOLE
FUNCTION ( 1)_"
SEEMECHANICAL
ADJUSTMENT"BUTTONHOLE
FUNCTION (2)."
P.37
P_18,t9
P13
P,28, 29
E35
P.36