Trouble Shooting; Causes And Remedies - Singer 1409 Instruction Manual

TROUBLE SHOOTING: CAUSES AND REMEDIES
-
IF THREAD FORMS LOOPS
CAUSE
REMEDY
Thread tension not properly regulated
Read instructions fpr
regulating needle-and bobbin thread tension
Needie thread not properly threaded and/or bobbin thread
Thread machine properly and/or winl bobbin thread correctly
not properly wound
Thread size ncst suited to fabric
See 'Sie of needle and thread'
Thread check spring not working properly
Have spring replaced
SHRINKING OR PUCKER1NG OF THE SEAM
Tension too tight Read instructions for regulating needle-and bobbin thread tensions
Sewing
foot
pressu re
too strong
Read instructions for regulating sewing foot-pressure
IRREGULAR STITCHES
Needle and bobbin threeds of poor quality
Use top quality threads
aobbin thread unevenly wound
Re-wind bobbin
MACHINE DOES NOT RUN FREELY AND MAKES A NOISE
Machine needs oiling
Read instructions on how to Oil
Dutt
and thread
ri shuttle
Read instructions on how to clean shuttle race
Wrong oil used. has now clogged machine
Clean machine carefully and re-oil
with too quality oil
Drive belt tension too tight
Loosen tension of drive
belt