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(ET) Mower motor problems



Bummer on the loose magnets.

That harmonic is just like the sound from an out of sync twin engine propeller aircraft. I get it too. It's the electric motors spinning at slightly different speeds. Not a big issue in itself but stiffening the deck would help overall. As for your magnet issue, perhaps there was a batch of motors made with bad / not fully cured magnet adhesive.

Good luck with it.

Marcus Sabathil
marcussab gmail com
Mobile: 604-374-1969
Site Q-39, 720 Gardner Lane.  Bowen Island BC. V0N 1G0