what's the rule of thumb concerning adjusting the carbs on atvs for altitude changes? i live in the Texas panhandle, elevation around 3000 ft., we would like to take our ATVs to Colo, Wyo, S.D., and even southern Texas at sea level or just above sea level, etc...., would i need to have these carbs adjusted or not?
thanks...............

 

Temp/Elevation main jet correction chart - HMF Engineering Forums

 

One main jet size smaller for each 3000 ft increase in elevation. So if you are going from 3000 ft to 9000 ft, go down two sizes on the main jet. The needle clip position should be fine.

 

many thanks!!!!