The ATV starts after about two kicks and runs fine until I hit the throttle. If I give it half power, it dies. Give it full throttle and it sputters, then runs like a beast. But, when I let it sit for a minute, then try to give throttle, it dies or will sputter until it goes to full power again. No midrange power.

However, if I put her up on blocks and run full throttle for a minute or two, then drop it down on the ground, it has power through all ranges.
It runs fine for about 10 minutes, then starts the whole sputtering deal again and I have to give it full throttle to do anything. Idle is fine.

Pulled the carb, disassembled it, shot cleaner through every part and port, and put it all back together. Same thing happens.
If I disconnect the electric choke, it has no bearing on the performance.

I've read countless threads on here, including the sticky, and am just stumped.
Any help here is incredibly appreciated!

BTW, yes, I'm new here and landed here through all my searching of the internet...atv connection consistently had the best posts and some of the most friendly/helpful information I could find.

 

Having the same trouble with a Viper RXL-50, tried everything too.... What did you finally trouble shoot it too?

 

I haven't.
Still don't know what the issue is and haven't pulled the carb off again to work on it.
My girls haven't had much interest in it this winter, so I haven't either.

Please let me know if you find out how to remedy this!

Sorry I can't help you more at the moment.