The speed control is brutally simple: a carbon-pile rheostat in series with the 120 VAC 1 A sewing machine motor.
Kenmore sewing machine Foot Pedals
Foot Control Pedal w/Double Lead Power Cord for Kenmore 158 Flat Bed Sewing Machine
Slow down vintage machines/prevent overheating foot controllers
All About the Sewing Machine - Seamingly Badass
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How to Identify Kenmore Left Homing presser feet and Center Homing presser feet
Sew-link Foot Control w/Cord for Kenmore 48.12060, 148.12071, 148.12140
Kenmore Model 158: Older Foot Pedal Resistor – The Smell of Molten Projects in the Morning
Cutex Foot Control Pedal w/ 3 Uneven Prong #6811 6812 for Kenmore Sewing Machine
30 Easy Flower Crafts For Kids Adults PureWow, 40% OFF
Cutex Foot Control Pedal W/ 3 Uneven Prong #6811, 6812 for Kenmore Sewing Machine
30 Easy Flower Crafts For Kids Adults PureWow, 40% OFF
How to Identify Kenmore Left Homing presser feet and Center Homing presser feet
Kenmore Sewing Machine Foot Controls for sale