The engine model # and spec # indicate it is 1 1/4" shaft. Unfortunately. That is why I think changing to a new motor and locating a new pulley may prove less complicated and more readily available. I just need to take some actual measurements off the existing setup and then try to find the right motor with the closest spec number and then start the install/modification process. Problem right now is I have not started to rip this apart to get a closer look at the shaft, pulley assembly, bolt pattern etc. I presume staying with a Kohler would be the best bet based on electrical and fuel pump considerations.
Thanks for the reply.
It's easy to adapt an engine with a smaller sized crankshaft to your pulleys.
I had to put a K341 out of a JD into my Ford LGT... the JD crankshaft was smaller. I bought a couple sleeve bearings to use as spacers from McMaster-Carr. Put a slot in them for the keyway, and bought a rectangular keyway-- 1/4" x 5/16" in my case from MM-C as well. Worked pretty good.
The B&S Vanguards are good engines, but pricey new. A Kohler Magnum or Briggs flat twin is quite a bit cheaper. Get the Kohler Magnum as it's solid state ignition. Most of the later-model Briggs are solid state.
If you find a good running Onan P-228, etc. twin it may be worth your while--they're also solid state, but they're more expensive to rebuild when the time comes.
The other possibility is a diesel twin. Look at these engines http://a1biofuel.net...25hp-Specs.html
The engine is 22 peak hp/16-18hp operating. He's selling them for $1,449 delivered. I talked with Ole at length a couple times. He is pretty selective about which Chinese mfr he uses. Also provides parts support. Cheaper than the Vanguard, and a diesel's torque to boot.
Edited by Utah Smitty, March 18, 2014 - 03:45 PM.