How do people regulate the speed of those tractor-powered PTO generators? It seems to me that the tractor's engine speed would get pulled down as the load is increased. If you have a constant load, then of course the throttle can be adjusted to show the correct 60-hz on the generator.

But is there a system on a tractor PTO generator to account for varying loads?

So I guess the message here is that you will be OK with a standard MB engine if you are driving a generator that sees a relatively constant load. I don't know how you can do that with a house because the heavy loads (water heater, pump, AC, heat pump, etc.) cycle on and off.

Ken300D

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1982 300D at 351K miles
1984 300SD at 217K miles
1987 300D at 370K miles