This start switch is found under the top motor cover on RS16 buffers. This controls the start capacitor, disconnecting once the motor is running. When they fail, the motor will struggle to start and trip breakers.
This can be replaced with the BN70 electronic start switch.

Specifications
Sold As	Each

This is a replacement for the following parts. Please note it may not be identical to some of the parts listed, but it will be a functional alternative.

Manufacturer	Part Number
Clarke American Sanders	53190A
Clarke American Sanders	53195A