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ctilsie242's avatar
ctilsie242
Explorer II
Mar 13, 2017

Seized up generator crankshaft?

I have had a 3000 watt generator for a while now, and it has at least 3000+ hours on it. Maintenance has been changing the oil out and the other basic stuff, including cleaning the carb.

It has worked perfectly until last weekend where when I tried to start it via electric start, the solenoid clicked, nothing happened. Tried pulling on the rope, it snapped.

I'm pretty sure it has given up the ghost, but I've never seen a generator actually seize up like this. Usually it might run a bit then just die, but this is the first time I've seen a generator hard-sieze where the camshaft couldn't be turned at all.

This is a head scratcher. Guess it is beyond my expertise, because it probably may require a valve job. Any ideas where to look?
  • Pull the spark plug, and try to turn it over by putting a socket on the end of the crankshaft.
  • Will it turn if you take out the spark plug? It's a bit of a long shot, but maybe there's some oil or water or something that got in the cylinder and is causing hydrolock.

    It may also be that the starter cord was getting weak with age, and a new one would turn the engine over without breaking. It could, of course, also have the engine seized for some reason.