WHAT TO DO
,. i ii i i n i i i i I II I II [ I I IIIII III ill II IIIIIIIIIIIIIIII Illill I I
PROBLEM PROBABLE CAUSG CORRECTION
IncOrreCt size neecl_e.
Ben_, or b{unt need{e.
Skipping
Incorrect setting of need|e,
Stitches
Tight upper thread tension,
Light pressure on presser foot,
Starting to stitch too |ast,
_mproper threading,
Breaking Upper Tight upper thread tension.
Thread
Incorrect size needle.
Sharp eye in needle.
Breaking Bobbin
Thread
Fabric not
Moving
Machine Jamming
_Knocking Noise_
Choose correct size needle for thread and |abric _page 5_.
Insert new needle _'page 57,
Reset need|e _poge 5_.
Loosen upper thread tension _poge 12_,
Increase pressure on presser foot _'page 10_.
Start to stitch at a medium speed.
Rethread machlne ipage 91 ,
Loosen upper thread tension :_poge 12_.
Choose correct size needle for thread and Fabric _poge 5_.
Insert new needle _page 5_.
Improper bobbin case threading
Tight bobbin thread tension.
Lint in bobbin case or shutt|e.
Feed dog down.
Light pressure on presser _oot,
Threads knotted under fabric.
Check bobbin case threading _poge 8_.
Loosen bobbin thread tension _page 13_.
Clean babbln c<_se csr_ shuttle (pages 32, 33t.
Thread caught in shutt{e.
Raise feed dog ;page 151.
increase pressure on presser foot _page _0_.
Place both threads back under presser foot before beginning
to stitch,
Disc_ssemble and cleon shuttle _pages 32, 33).
35
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