Pressure Adjustments - Singer 337 Instruction Manual

13
PRESSURE ADJUSTMENTS
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To decrease pressure, turn thumb
screw counterclockwise.
To increase pressure, turn thumb
screw clockwise.
DECREASE INCREASE
Smooth, even handling of several thicknesses of fabric results
when pressure is correctly regulated.
Surface finish, as well as the weight and texture of the fabric,
must be considered in determining the amount of pressure needed.
Adjustment of the thumb screw regulates the amount of pressure
exerted on the material while it is being stitched.
Too light a pressure will result in irregular feeding which affects
both quality of stitch and evenness of seams.
Too heavy a pressure not only affects stitch and seam quality but
will mar smooth surfaces and pile fabrics.