The speed control is brutally simple: a carbon-pile rheostat in series with the 120 VAC 1 A sewing machine motor.
Kenmore Household Craft Sewing Machines for sale
Foot Control Sewing Machine Parts & Attachments for Kenmore for
Disassembly of Kenmore Sewing Machine Foot Pedals
Kenmore Sewing Machine Foot Pedal Replacements
Foot Control Sewing Machine Parts & Attachments for Kenmore for
1 set Foot Control w/ Double Lead Power Cord (110-120V ) Fits many older flat bed including Rotary style. parts # FC-6605 ,Alternate Part Numbers
Foot Control Pedal w/Double Lead Power Cord for Kenmore 158 Flat Bed Sewing Machine
Kenmore Sewing Machine Foot Controls for sale
All About the Sewing Machine - Seamingly Badass
Foot Control Sewing Machine Parts & Attachments for Kenmore for
Vintage Kenmore Sewing Machine Model Black 148.273 with foot pedal