'You have to be careful when re-installing the star type blade so as to get it positioned properly onto the mating star spindle or you will get a vib.'
You'd have to be pretty ignorant to not realize that the blade is not indexed before tightening. Yep, that would be a major vibration.
'Those...
The way I read it, you want to use the gas engine to run a generator to charge the battery to drive the mower with an electric motor. I guess I have it all wrong, at least I hope so. :)
This model but a Murray:
I noticed the deck shaking like the blade was out of balance but when I took it off, it was in great condition and balanced fine. I had a new blade so I went ahead and balanced it before installation and it was pretty far off. Anyway the result was an improvement. I...