Hey, I'm new to the forum and am also a new ATV owner.  I've got a 2000 yamaha grizzly that is continually dripping fuel out of a drip hose on the back of the atv.  I'm suspecting a carb. problem but could use a second opinion. I'd also appreciate any advice on how I'd go about fixing it. Thanks.  

yes it's sounds like the floats are stuck and it is overflowing.

there are 2 ways fuel can come out of the overflow tube.

1) the screw on the bowl is loose allowing it to drip out.

2) the float valve is worn or stuck open so that the bowl fills with fuel and overflows through a tube at the top of the bowl.