How to eliminate end play or binding of hook driving shaft.How to eliminate end play or binding of upright arm shaft.How to eliminate end play or binding of horizontal arm shaft.How to adjust the bobbin winder pressure.How to adjust the needle thread tension.How to position feed dog in throat plate slots.Lubrication diagrams for both machine and motor.Diagram of principal parts and features.Diagramatic list of all parts for a 221 machine.This version comes stapled and with a cover, but would be easy to pop into a folder of your own. This original ‘manual’ was actually a set of loose leaf sheets which went in a folder alongside servicing instructions for other Singer machines which the Technician would have been responsible for.
Service Manual for the Singer 221, 221-1, 221K and 221J and can also be used for the 222K, this is a high quality facsimile directly from an original manual issued to Singer Sewing Machine Technicians.
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