2004 650 Twin Arctic Cat ATV Service Manual, Page 86Get this manual
! CAUTION
Any objects or liquid entering the intake tubes will fall into the engine causing severe damage if the engine is turned over or startedADJUSTING FLOAT LEVEL
4Measure the float height (A) from the float chamber mating surface (B) by tilting the carburetor so the float valve contact tab (C) just touches the float valve rod (D)The float valve spring (E) must not be compressedFloat height should be 3-5 mm (0.12-0.20 in
1Drain all fuel from the carburetors; then remove the screws securing the float chamber and remove the float chamberAccount for four screws and one O-ring gasket
! WARNING
Whenever any maintenance or inspection is made on the fuel system during which there may be fuel leakage, there should be no welding, smoking, open flames, etc in the area