I admit I did not check for open circuit when it shut off. I did replace the switch as it did not feel right. You do have a point though, as when the mower spindles stopped cutting, it was much like cutting power as opposed to slippage.
From that I had read about the older clutch type, when they got hot it indicated the air gap needed adjusting. I can see about .010 wear in the friction surface compared to the untouched area near the hub. Of course, mine in't adjustable.
Maybe I'll connect a battery and a light bulb to the coil, and set it on a hot plate for a few minutes.
In the meantime, the grill surround came apart when i removed it. I'll be patching it back together. I don't supposed there are spares available?
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