RalphVa
Super Member
- Joined
- Dec 19, 2003
- Messages
- 7,885
- Location
- Charlottesville, VA, USA
- Tractor
- JD 2025R, previously Gravely 5650 & JD 4010 & JD 1025R
A carbed gasoline engine will use 50% more fuel than a straight fuel injected diesel. This is good data from a bunch of us engineers back in the 80s.
Knowing this, a carbed gasoline engine should use 1.5 x 0.46 gph for 18.5 hp. This is data from my 4010 over 9 years and 660 hours and has prorated directly by engine hp to the present 2025R. I'd say your Kohler's carb isn't right. That Grasshopper with a Kubota diesel sounds like a good one.
I had a Gravely with a 12 hp Kohler. Never did keep good records on it, but don't think it burned that much.
Knowing this, a carbed gasoline engine should use 1.5 x 0.46 gph for 18.5 hp. This is data from my 4010 over 9 years and 660 hours and has prorated directly by engine hp to the present 2025R. I'd say your Kohler's carb isn't right. That Grasshopper with a Kubota diesel sounds like a good one.
I had a Gravely with a 12 hp Kohler. Never did keep good records on it, but don't think it burned that much.