hi there, one of two problems with a LT-80 i have,

first of, can u run these without an air filter(just for now since i aint got one + to test)

when im riding the quad, it's ok going at a slow speed, until u give it more throttle, it goes then stops, goes and stops etc etc i cleaned the carb(but not the 3 holes at the front of the carb)as im not too sure how they come out??

also does anyone have a diagram of where the petrol hoses run to, incase i got them wrong? thanks for your time

 

To test you can leave the filter off... I suppose. We all know it's not good but till we get it running better, it'll do.
This could be a fuel supply issue.
FYI: petcock on prime will flow fuel constantly. In the on position, it takes vaccum from the motor to open the diaphram and let fuel flow.
Looking at the carb on the right side of the motor:: the front hole on the carb is a vent. The middle is the fuel supply. The back hole is the vaccum.
Let us know how you make out.