20 hp Kohler Command - fuel or fire??
I have a 15 yr old Kohler Command 20 hp twin cylinder that will run for a few minutes (sometimes 5, sometimes 15) and die. Sometimes it sputters like the fuel line is clogged and then runs another minute and dies. Here's what I know:
Fuel pump is good.
Carbeurator is good, bowl has been drained, float works fine.
Spark plugs are new.
Coil has fire on both sides.
Fuel filter is new.
Fuel cap is not clogged. Problem occurs with gas cap removed.
Fuel is new (93 octane).
Air filter is not dirty.
After engine cuts off it will not crank again until it's cool.
It appears to have fire all of the time but will not crank even if you pour gas directly into the carb.
Fuel filter will go completely dry but then fill up again when trying to crank.
Problem appears to be fuel, then fire, then neither, then both.
Any and all suggestions will be appreciated.