Aug 21, 2011 · I just bought a YTH24V48 (mfg date 4/22/2015) and at 10hrs I'm experiencing the same thing. Replaced the "ground drive belt", still no go. Guess what I found when I RTFM'd: Husqvarna declares you'll need to purge the hydrostatic transmission (in my case, the F7) before first operation. Yep, you read it right: before you start actually using ...