Kenmore 385.15202400 Service Manual page 9

SEWING MACHINE DIV.20 MODEL 385.15208400
CONDITION
6. NOISY
OPERATION
7. DEFORMATION
PATTERN
CAUSE HOW TO FIX REFERENCE
P.17 1. BACKLASH BETWEEN
SHUTTLE HOOK GEAR AND
LOWERSHAFTGEARISTOO
GREAT.
2. LOWER SHAFT GEARIS
LOOSE.
&INAPPROPRIATE BELT
TENSION.
4. UPPERSHAFTGEARISLOOSE.
5. NOT ENOUGH OIL.
1. INAPPROPRIATE ZIGZAG
SYNCHRONIZATION.
2. INAPPROPRIATE
DISENGAGEMENT OFCAM
FOLLOWER.
3. UPPERTHREADTENSlON
IS TOO STRONG.
SEE MECHANICAL
ADJUSTMENT "CLEARANCE
BETWEEN NEEDLE AND HOOt_
(NO.2)".
ELIMINATE THE LOOSENESS
SEE MECHANICAL
ADJUSTMENT"MOTOR BELT
TENSION".
ELIMINATETHELOOSENESS.
OIL ALL MOVING PARTS,
SEE MECHANICAL
ADJUSTMENT"NEEDLE
SWING".
SEE MECHANICAL
ADJUSTMENT
"DISENGAGEMENT OFCAM
FOLLOWER".
ADJUST UPPER THREAD
TENSION CORRECTLY,
P.24
P.14
P.23
P.11
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