I took my 300ex out today to just putz around the yard. I had the choke on and was driving slowly in first gear to warm it up. I turned off the choke and pulled in the clutch. It was still cold and it stalled. But as it stalled, It sounded like the pistion made a sort of thud as it stopped completely. It started right back up without any problems, but it has never made that noise before. Th eonly thing i noticed when I started it again was the fact that it seamed to vibrate more than usual. It was just in the shop to have the valves adjusted? Could the problem pertain to the valves or anything else, or am I just over worried?
thanks
Justin