I have chunked something over 4000 lb of wood with only 2 shutoff switch failures. But I was using 10 amp switches on a 20+ amp load.
I have stalled the motor maybe 10 times total when trying to chunk too large of a stick, and managed to shut off the power in 1 or 2 seconds. But the start capacitor does not like that and finally gave up.
I chunked the last 20 - 5 gallon buckets by spinning the tire (flywheel) then flip the power switch.
Watched some YouTube videos about electric motor repair, cleaned the start switch contact but still no start.
Found a LARGE start capacitor (740 - 830 MFD at 165 v) on EBAY for $35 installed it and happy days!