Janome JF Series - Page 5

CONDITION CAUSE HOW TO FIX REFERENCE
5. NEEDLE
BREAKS
4. THE FABRIC MOVES
WHILE THE NEEDLE IS
PIERCING IT, OR THE
NEEDLE ZIGZAGS WHILE
IN FABRIC.
5. FABRIC IN BEING PULLED
TOO STRONGLY EHILE
SEWING.
SEE MECHANICAL ADJUSTMENT
“NEEDLE SEWING”.
GUIDE THE FABRIC GENTLY
WHILE SEWING.
P.10
6. NOISY
OPERATION
1. BACKLASH BETWEEN
SHUTTLE HOOK GEAR
AND LOWER SHAFT GEAR
IS TOO GREAT.
2. LOWER SHAFT GEAR IS
LOOSE.
3. INAPPROPRIATE BELT
TESION.
4. UPPER SHAFT GEAR IS
LOOSE.
5. NOT ENOUGH OIL.
SEE MECHANICAL ADJUSTMENT
“CLEARANCE BETWEEN
NEEDLE AND HOOK (NO.2)”.
ELIMINATE THE LOOSENESS.
SEE MECHANICAL ADJUSTMENT
“MOTOR BELT TENSION”.
ELIMINATE THE LOOSENESS.
OIL ALL MOVEING PARTS.
P.14
P.25
7.DEFORMATION
PATTERN
1. INAPPROPRIATE ZIGZAG
SYNCHRONIZATION.
2. INAPPROPRIATE
DISENGAGEMENT OF AM
FOLLOWER.
3. UPPER THREAD TENSION
IS TOO STRONG.
4. INAPPROPRIATE FEED
BALANCE.
SEE MECANICAL ADJUSTMENT
“NEEDLE SEWING”.
SEE MECANICAL ADJUSTMENT
“DISENGAGEMENT OF CAM
FOLLOWER”.
ADJUST UPPER THREAD
TENSION CORRECTLY.
SEE MECHANICAL ADJUSTMENT
“FEED BALANCE ON STRECH
STITCH”.
P.10
P.20 - P.23
P. 7
P.17
WHAT TO DO WHEN
3
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