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SECT1ON 6. PERFORMANCE PROBLEMS CHART
What to Do When
PROBLEM PROBABLE CAUSE CORRECTION
The machine does not work. A single digit number was programmed, Two digit number must be programmed,
A number without pattern was selected. A number m the stitch package chart must be selected.
The machine does not work and the The area of feed dogs is filled wlth dust Clean the area at the teed dogs.
Pattern Indicator reads "'Er °" and lint-
Irregular Stitches
Breaking Needle
Bunching of Thread
Puekermg
Monograms and butlonhotes are
not identlcalduring memory sewing.
Incorrect size needle.
tmproper threading.
Loose upper thread teosron.
Pulling fabric.
Light pressure on presser toot.
Loose presser toot,
Unevenly wound bobbin,
Nicks or burrs at hole at needle plate.
Polling labrlc.
Incorre_:t size needle.
Incorrect setting el needle,
Loose presser toot.
Upper and lower threads not drawn back
under presser foot before starting seam.
Incorrectthread tensson(s).
Light pressure on pressertoot,
Using two different sizes or kinds of thread.
Bent or blunt needle,
Loose presser tool
Fabric too sheer or too sort.
Fabric teed is restricted in some way.
Choose correct slze needle |or thread and fabric,
Relhread machin_-
Tigi_ten Upper thread tension.
00 not putt (abrrc; guide tt gently.
lncrease pressure on presser toot.
Reset presser _ooL
Rewind bobbin,
Replace needle plate, or polish off burrs completely,
DO not put1 fabr=c; guide it gently.
Choose correct size needle for thread and [abr_c.
Reset needle,
Reset presser toot,
When starting a seam be sure to draw both threads under and
back at presser tool about 4" and hold until a few stitches are
|armed,
Reset thread tenslon{s).
Increase pressure on presser tOOt,
Upper thread and bobbin tbread should be same s_ze and kind.
Insert new needle,
Reset presser toot.
Use underlay at tissue paper,
Cheek threads tar tangles,
Check leed dogs and clean, if necessary,
Be sure tabrm does not pileup behind the presser_oot.
See pages 69 to _ tar buttonholing instructions.
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