Excessive Fuel Consumption 2005 Sportsman 400

I went out on a ride with my wife and son, after about 12 km in the bush I noticed I only had 1/2 of tank of gas left and I started with a full tank. I immediately headed for home.
What could be the cause of this?
I also noticed a breather hose sitting on the deck of my trailer, but I don't know from what machine it came from.
I pulled the belt housing off and it was extremely dirty with black dust, could a bad belt cause the fuel issue?


Any help would be appreciated.

Snowshoe GNCC Youth Bike Race Report

The AMSOIL Snowshoe GNCC, round eight of the 2019 AMSOIL Grand National Cross Country (GNCC) Series presented by Specialized, an AMA National Championship, took place on June 22nd and 23rd.

Snowshoe GNCC Youth ATV Race Report

The AMSOIL Snowshoe GNCC, round eight of the 2019 AMSOIL Grand National Cross Country (GNCC) Series presented by Specialized, an AMA National Championship, took place on June 22nd and 23rd.

Snowshoe GNCC Women’s Race Report

The AMSOIL Snowshoe GNCC, round eight of the 2019 AMSOIL Grand National Cross Country (GNCC) Series presented by Specialized, an AMA National Championship, took place last weekend on June 22nd and 23rd.

EFI and check engine light came on

After a heavy rain where were riding. I started My ATV up and it sputtered a little no big deal. After riding it a bit the Red EFI light and check engine light came on. So I parked it for the night. The next morning when I started it no sputter so I road it for a good 30 minutes and no lights came on and road fine. Has this ever happened to anyone else and should I be concerned.