Kohler 25 hp problem????
I have a Kohler 25 hp two cyliner motor. I noticed that the left cylinder sparkplug always seems to burn rich which a layer of sooty black deposit on it. The right cylinder sparkplug appears to burn normal. I may get a just an instant puff of black smoke on start up, but I figured that was due to the choke. Otherwise no smoke at all.
Funny thing is, this is my second 25 hp Kohler and my first one did the exact same thing. Guy at my repair shop says this is normal and typical of small two cylinder engines. Claims he sees it with Kawasaki, Kohler, Honda, etc.
Does this seem right? Can anyone out there relate similar experiences?