not a comment or any help but i to have a diplomat thats model 430 a runner i was wondering do the chain drive models have a constant speed mine tends to bolt its hard to keep an average speed with the clutch lever is this due to riding the clutch or the belt heating up with the lever all the way out it tends to make me run behind not literally of course know what i mean a slight jog obviously it should have a steady walk not a run is this why there not that popular also the catcher has a tendancy to fall of the engine however a briggs 3 hp runs like a swiss clock even after yrs of dormancy it also says on the instruction manual its an edge trimmer any one used it as an edge trimmer it definately looks dangerous no covers maybe never happened the part no for the trimmer is434394