I have a Gravely HD 60 that has the FR730V engine and it has been burning some oil for the past couple years. I believe it is a 2011 model and has 680 ours on it. Outside of the oil burning issue, it is in outstanding shape as I scrape the deck and blow it off with each use. I wouldn't mind sticking another engine on the beast but though I might bump up the hp a little if that was the case. Has anyone ever replaced the FR730V with a different engine? *Also, have I been hanging out in the mechanic shop too long and should I just buy a d@mn new one?? The Scag dealer is right down the road.