I have a 2010 YTH22V46XLS with a little over 50 hours on the meter that I picked up used. Did a complete fluid/filter/spark plug change. When starting from a cold start, full choke, it takes ~15-20 seconds for it to fire up. No smoke (black/white) after starting and it runs fine after starting. Warm starts are in the ~1-2 seconds range. Fresh gas too.