43
Problem Cause Solution
Fabric not neatly Waste thread between upper Upper blade is blunt.
trimmed and lower blade.
Clean blades. Replace upper blade
(see Page 40).
Puckered seams Thread tension too tight. Reduce thread tension.
Incorrect setting of differential feed. Re-adjust differential feed
(see Page 20)
Thread has caught due to incorrect Thread correctly
threading. (see Pages 10 - 18).
Fabric not fed Stitches too short. Increase stitch length
through evenly (see Page 20).
Sewing foot pressure too low for Increase sewing foot pressure
heavy fabrics. (see Page 21).
Sewing foot pressure too high for Reduce sewing foot pressure
lightweight fabrics. (see Page 21).
Waste thread in the feed dog. Clean the feed dog.
Machine will The lead cord/plug is not seated (see Page 7).
not operate properly in the socket.
The main switch is not switched on. (see Page 7).
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