Fuel

[bodatiouskid]

I have a 2002 Polaris Sportsman 700,
The other day I was riding a path & while going up a fairly steep hill ATV bogged down like running out of fuel.After sliding back down hill & switching to Reserve ATV went up hill,but next hill it bogged again.
In field will run wide open for a few seconds & then sputter like not getting enough gas.Have blown out gas lines between carb & tank.
What do you think is wrong?Could trash have gotten in carb?
What do you thing I can do?Is there a good spray carb cleaner,& a gas additive that I can use?(Am no small engine mechanic)

[Diesel man 03]

My 05 500 did the same thing, turned out to be the fuel pump.