grinder running

[Don Kounkel]

The grinder hums but won't run when turned on.But if I take the grinder wheels off and spin the shaft by hand it will get up to speed and run. I would like to know where the starter is.

[Mark]

Hi Don,

There is a chance that the electronic module (item #47) could be the problem. Unfortunately I don't really know what purpose it serves on this tool. I would be more inclined to blame the problem on the motor itself. A section of the rotor can become damaged and essentially dead. When you turn on the motor the dead section will prevent the motor from starting. By giving it a turn the motor will start and continue to run as the momentum of the rotor itself will advance the dead section of the rotor. A motor shop could test the motor and verify if this is the problem.

I hope this helps with your repair!

-Mark