I guess I'd better not add a larger deck til I see if I can coax a couple more HP out of the old kohler. It starts up fine and does not miss but seems like it's running rich to me. Any advice appreciated,
thanks,
Dave
If she is smoking under load while coming up the hills, you are probably burning oil and the engine may be getting ready for a rebuild. You could try a "seafoam" treatment and see if that helps out.
To check on the "running rich" situation, pull the spark plug and look at it. If it is gunked up and dark burnt brown, you are running rich. If it has a light or whitish color, then you are running lean. You can google "spark plug conditions" or something like that and there will be pictures on the internet of how rich, lean and just right should look on your plug.
Has the carb ever been rebuilt or cleaned? If not, you are definitely ready for this service. Ask your dealer how much to do this and then ask him how much for a rebuild kit and maybe you will want to take it on yourself if you can get a Kohler engine manual that has your carb in it. Kohler engine manuals might be on-line...perhaps someone can help out here? :goodl: