Generator tapered shaft sprocket

[Spectre4923]

A friend has a generator that runs but doesnt make power. Its a 13hp yamaha engine. Neither of us have actually looked but after doing a little research online i found most generator engines have tapered shaft. My question is do they make tapered shaft sprockets that i could use?

 

[qtband]

Some generators don't use a tapered shaft. Get the model number and look it up online, then you'll know. Most tapers begin after an inch or two of straight shaft. You may be able to work with that to get a sprocket on it. Then a clutch would need to go on a jackshaft. Get the details and go from there.

 

[anickode]

Another option would be to order a new crankshaft for it (since the rest of the engine is perfectly good) or to have the existing crankshaft turned down to 3/4" on a lathe.