Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Twin Kohler, CH20.. So does the oil have gas in it? Thinned oil , from gas in the oil, will cause the smoke. I would try changing oil and filter, then test, If it is getting fuel in the oil. then the carburetor or fule pump is leaking gas into the oil.
OK> What does it have for a fuel pump? I see no fuel pump. Gravity feed from the tank? May have a needle valve and float leaking in carb.
Yes, it shows the tank and the carburetor, but does not show a fuel pump. So fuel can leak into the vent to crankcase through a leaking needle valve.
OK> Thanks, ***** ***** to close if satisfied.