I have a 2017 Hustler zero turn with the Kawasaki engine.
code FX730V-C517-R ENO FX730VB19187
Got a little over 600 hours on it. I noticed in the last few weeks when I shut it off it backfires. Not every time but often. I am assuming the backfire valve is going bad on bottom of carburetor with wire running to it.
I have also noticed it started running richer than in the past. Gas smell is noticeable than in the past . I see no way to lean it out but I haven't looked that hard. I assume the adjusting screws have been blocked off or maybe there is a special tool I need to do this. This mower has been serviced when manual calls for it to be and taken good care of. Tips appreciated. Tom