exmark throwing hydro belt...


LawnSite Member
hey guys, last 2 mornings i have started the mower, the hydro belt has come off on the start, i slip it back on and its fine the rest of the day, what could be causing this ?

tony b

LawnSite Member
I'm trying to remember, we had a 48 that did this. It was a very low hr. machine. I think the large spring on the tensioner was weak. I will ask on monday when everyone comes in. I just can't remember.


LawnSite Fanatic
Knoxville, Tn
My full size tracers do this once in a while too, always when engaging the blade at low rpms with a cold engine. I think the belt may be stretched a bit coupled with the whiplash the idler gets from the engine bogging down when engaging the blades.