2003 Ski-Doo ZX Series Factory Shop Manual, Page 179Get this manual
Section 04 ENGINE Subsection 10 (CARBURETOR AND FUEL PUMP)
Float level height can be checked using tool (PN 529 035 520)Keep tool in line with main jet as explained above529 035 520
CARBURETOR ADJUSTMENTS
NOTE: For high altitude regions, Service Bulletin will give information about calibration according to altitude and temperatureAdjustments should be performed following this sequence: air screw adjustment throttle slide height (preliminary idle speed adjustment) throttle cable adjustment carburetor synchronization final idle speed adjustment (engine running) oil pump and carburetor synchronization