Pfaff hobbylock 4752 Owner's Manual - Page 45

Problem, Cause, Solution

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Page 45 highlights

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

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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).