Generator starts then shuts off in 8 to 10 seconds it shuts down

SOURCE: kohler lp shuts down

What you need to know is there enough fuel going to the regulator. It should be 7 to 11 inches Water Column. If not your problem may be not enough fuel. That includes when the heater in your house kicks on and what ever gas appliance you may have. Once you verify that you need to figure out if you have the proper pressure coming out of the regular on the inside of the generator. Next I would look at compression of the cylinders. It may need new piston rings.

SOURCE: Kohler Model 12RES LP gas generator starts

Sounds like a short in one of the windings to me. Can you verify that the engine rpm is not exceeding specs? If you can modify the engine speed Id say slow it down and see what the voltage read is.

SOURCE: The monitoring system of our Kohler propane

The monitoring system of our Kohler propane generator has sent a "UU" message. What does this mean as it causes the generator to shut down 10 seconds after starting? Also how can this be corrected?