I have a GMS 120 for about two years now. It was purchased new. Immediately from the break-in to now, I have had great difficulty in getting the engine to run longer than a couple of minutes at best. It starts easily, but cannot be reliably adjusted. Fuel lines, filter, fuel tank position and integrity have been checked. I even bought a Perry pump and Carb which did no good. I had heard that these engines can be very difficult.
Any help would be greatly appreciated. JB