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8. CHECK CHART FOR PERFORMANCEPROBLEMS
Your sewing machine is a precision
instrument, designed to give you many years
of troublefree sewing with minumum
56
maintenance. If you have any performance
problem, check the list below and you'll be
able to solve the problem yourself.
GENERAL PROBLEMS
Machine does not sew.
*Hand wheel or clutch knob is not returned to
stitching position. - Push in or tighten clutch
(see page 10).
*Power line cord is not connected. -- Check
plug.
*Power/light switch turned off, -- Turn on the
switch.
Machine jams/knocks.
*Thread is caught in shuttle. -- Clean shuttle
(see page 55),
*Needle is damaged. -- Replace needle (see
page 13).
Fabric does not move.
*Presser foot not lowered. - Lower presser
foot.
*Stitch length control is set at 0. -- Set it at 24
to 6.
*Feed cover plate is attached. - Remove feed
cover plate.
*Thread is knotted under fabric.
STITCHING PROBLEMS
Machine skips stitches.
*Needle size is not correct for thread and fabric,
-- See page 14.
*Fabric is a certain knit or synthetic. - Use
"Q NEEDLE" TMand "Q FOOT"TM.
*Needle is bent or blunt. -- Replace needle
(see page 13).
*Needle is not all the way up into needle clamp.
- See page 13.
*Top thread tension is too tight. -- Decrease
top thread tension.
*Machine is not threaded correctly. - See
page 12 and 15.
*Thread is caught in shuttle, -- Clean shuttle
(see page 55).
Stitches are irregular.
*Needle size is not correct for thread and fabric.
-- See page 14.
*Machine is not threaded correctly. - See
page 12 and 15.
*Top thread tension is too loose. - Increase
top thread tension.
*Fabric is being pulled or pushed against
machine feeding action. -- Guide it gently.
*Bobbin has not been wound evenly, - Rewind
bobbin.
*There are nicks or burrs at needle plate
opening. - Replace needle plate or smooth
burrs with extra fine Emory cloth.