When I get back to my parents house in a few weeks I need to figure out what is making my Bolens 1468 shake. It is a 1993 model in the eliminator series with a 16hp Briggs Vanguard. I don't think it is the engine, when the clutch is not engaged the tractor is fine. When I slowly engage the clutch it will start to shake the tractor. It is very noticeable and not normal. Does anyone know what I should be looking at? I am going to see if there is a bent pulley or something but not sure where to go from there.