2003 Ski-Doo ZX Series Factory Shop Manual, Page 188Get this manual
Subsection 10
Section 04 ENGINE (CARBURETOR AND FUEL PUMP)
6, Float Bowl
Unscrew drain screw no2 and screw no3Remove float bowl
1, Float and Needle Valve Ass'y
Unfasten both screws then, pull out float and needle valve ass'y no1At assembly, apply Loctite 243 on screw threads
All Models Remove carburetor coverLoosen needle retainer screw no8Fully open throttle and hold in this position for the following stepMove aside needle retainer no95, Main Jet
The main jet installed in the carburetor has been selected for temperature of20C (0F) at sea levelDifferent jetting can be installed to suit temperature andor altitude changesA service bulletin will give information about calibration according to altitude and temperatureMain jet no5 may be removed without removing float bowl no6 by first removing drain screw no2
7, Pilot Jet
Use narrow screwdriver from carburetor tool kit (PN 404 112 000) to unfasten pilot jet no7A32C6TA