That seems like it uses a lot, too. My 660 gets over 20 MPG.I just finished using my brand new '10 Rancher at a motorcycle rally for event setup and security. Most of the riding was on grass, gravel, and pavement. I even pulled a small 3x5 trailer during setup to carry the gear. It set at idle from time to time and I drove the fire out of it up to 50 mph at other times. During the 13 days I was there, I put 250 miles on it and used approximately 15 gallons of fuel. That calculates to about 16 mpg.
Yeah, that could be it, plus I wasn't pulling a trailer when I figured my mileage.I think I wasted a lot leaving it running while taking care of issues during setup and security stops. I feel it should get over 20 if it were moving all the time the engine was running. My average miles per hour during the two week period was only 6.5 miles per hour and when I was riding it, I was traveling much faster.
Did you physically look in the tank to see the fuel level. I am just wondering if you are getting a bad reading from a fuel level sensor. Those numbers sound really scary considering everything you describe in your post seems normal operation for a Honda.The machine runs fine and clean.
I checked for leaks, and unless the fuel comes out of the tank cap breather hose, there are no leaks.
I do find that the machine vibrates quite a bit on idle & neutral. It's always done that. However i am comparing the vibration to that of a couple foreman 500's.
Not back fires, or power fluctuations.
I did notice that the fan came on a few times when driving, and nothing strenious either.
The fan also came on when the engine was off and the key was on and would not shut off until i started the motor for a few seconds.
Does that help?