Singer 812U Instruction Manual page 2

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These models have the same sewing performance as the high-speed types (Model 842U) so th ey
can be used for run stitching , ruff1ing, bulky stitching and many other applica tio ns.
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Differential feed ratio can be changed by a qu adrant shaped adjustrnent whi ch assures a wide
di fferen tia I range.
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Blade engaging angle can be easily adjusted for sharp cutting performance.
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Most of the gauge parts, expendable parts, att achments and other devices of these models are
interchangeable with those of Model 842U.
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