Ok i started the quad up today and went to ride it but once i hit half throttle it cuts out and stutters. Its like that in every gear do you think i need to clean my carb or maybe i have water in the gas?

When was the last time you rode it? What was the last thing you did before you put it away?

The carb need's cleaning is my guess. I would pay special attention to the pilot jet and the ventury tube or the emaultion tube what ever you want to call it.

Start with a spark plug it's cheap then look into the pilot and main being gummed up

Uh Um,
I think that there was a hill and some mud involved if memory serves me correctly!!!.....

Definitely a carb issue, change out the gas and clean the carb, may be pilot jet but I would aim for the main jet.

most of the time if its pilot jet it will be idle, if it had to have the choke to run I would suspect the pilot but upper end would probably be pilot

lol bryan yea it had a hill and mud involved. Ok thanks everyone for the help ill keep ya posted.