Issues
Cause
Solution
Machine stitching troubleshooting - continued
Thread Breaking
Thread tension too tight
Decrease tension (page 25)
Machine not threaded correctly
Inspect for accidental double wrapping
of thread on thread guides, make sure
thread mast is directly over thread spool,
make sure thread spool is correctly
installed
Hesitating too long at one point
Move machine quicker within speed
limitations so stitches don't overlap or
build up, sewing in one place will cause
thread to break
Bobbin has a burr on it
Check and replace the bobbin (page 12-
13)
Bobbin not inserted correctly
Remove the bobbin and make sure that
it clicks when you press it into the hook
assembly (page 12-13)
Top thread and bobbin thread tensions not
balanced
Make sure bobbin tension is adjusted
correctly (page 12-13)
Debris on tension discs
Clean between and around the tensioner
discs (page 26)
Hook holder pressing against hook assembly or
doesn't have enough space
Re-adjust the hook holder (page 22)
Bobbin is not correctly wound
Check the bobbin to ensure that it is
properly wound and that it is properly
inserted into the bobbin case (page 12-
13)
Timing needs to be adjusted
If needle is hitting the hook, the thread
will break. Follow the timing instructions
(page 24)
Needle bent or burred
Replace the needle
Hook assembly needs to be replaced
Contact your Sewing Machine Dealer
Needle plate off center rubbing needle
See needle plate instructions (page 21)
Machine Is Running Loud
Hook assembly needs oil
Only one or two drops of oil see
instructions under oiling my machine
(page 29)
Needle bar and mechanics need oil
Only one or two drops of oil (page 29)
Bobbin winder is running
Make sure the bobbin winder cam is
pushed out (page 12)
Troubleshooting
32