gaw wrote:for commercial mowers the rule of thumb that many go by is 100 hrs. times the horsepower for air cooled engines and 150 hrs. times the horsepower for liquid cooled engines.
Hmmmm... that's an odd little thought....that a 20 HP will have twice the life of a 10HP. I don't know if I'd believe in that. Everyone knows the old 8HP Kohler's will never, ever die.
From my experience, generally liquid cooled last longer than air cooled, but commonly a (well built) diesel will last longer than any gas engine. The whole reason for me asking if 6,000 hours is a lot for the 755 is that I am not familiar with THAT diesel engine. I know with proper care the Case backhoe diesels will often go 10,000 hours. As for gas engines, my Toro dealer says "If you don't check the oil every time it's used, about 750 hours. If you do, and change it on schedule, then they'll go 2,500 or a bit more".
Smitty....that's not lowly.... it's a beauty! For sure though... when you step into "industrial" and "hydraulic" the price goes up fast.