3
MODEL:eXplore 240
6. NOISY 1. BACKLASH BETWEEN SEE MECHANICAL P. 14
OPERATION SHUTTLE HOOK GEAR AND ADJUSTMENT “CLEARANCE
LOWER SHAFT GEAR IS TOO BETWEEN NEEDLE AND HOOK
GREAT. (NO. 2).”
2. LOWER SHAFT GEAR IS ELIMINATE THE LOOSENESS.
LOOSE.
3. INAPPROPRIATE BELT SEE MECHANICAL P. 23
TENSION. ADJUSTMENT “MOTOR BELT
TENSION.”
4.
UPPER SHAFT WORM IS LOOSE. ELIMINATE THE LOOSENESS.
5. NOT ENOUGH OIL. OIL ALL MOVING PARTS.
7. DEFORMATION 1. INAPPROPRIATE ZIGZAG SEE MECHANICAL P. 11
OF PATTERN SYNCHRONIZATION. ADJUSTMENT “NEEDLE
SWING.”
2. INAPPROPRIATE SEE MECHANICAL P. 21
DISENGAGEMENT OF CAM ADJUSTMENT
FOLLOWER. “DISENGAGEMENT OF CAM
FOLLOWER.”
3. UPPER THREAD TENSION ADJUST UPPER THREAD P. 8
IS TOO STRONG. TENSION CORRECTLY.
4. INAPPROPRIATE FEED SEE MECHANICAL P. 19
BALANCE ADJUSTMENT "FEED BALANCE
ON STRETCH STITCH."
PROBLEM CAUSE REMEDY REFERENCE
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