I just bought a lightly used JD LT155. It is an '01 model, but was hardly ever used. I bought it from an older lady. Her husband bought it new and got sick right afterward, so they paid a landscaping service to take care of their yard. The thing is spotless and looks brand new. I got a great deal on it, price-wise.
My question is about the engine (Kohler 15CV). There is a ticking sound coming from, best I can tell, the top of the engine, in the valve area. My best guess is that it is a lifter. I put a little STP Oil Treatment in it and ran it up and down the street for a few minutes and it quieted down quite a bit. Is this something to be concerned about? I have never heard a rod knocking before, but I would think the sound would be coming from lower in the engine.
I have done a complete overhaul on a boat motor before, but I am really hoping that I don't have to do that to this thing.