2004 Skidoo ZX Series Service Manual, Page 197Get this manual
Section 04 ENGINES (2-STROKE) Subsection 09 (CARBURETOR AND THROTTLE CABLE)
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Adjustments should be performed following this sequence: air screw no6 adjustment throttle slide no5 height (preliminary idle speed adjustment) throttle cable adjustment carburetor synchronization final idle speed adjustment (engine running) oil pump and carburetor synchronization
A30C1QA
CARBURETOR IDENTIFICATION VM 30-210 VM 34-590 VM 34-591 23.9 mm (.941 in)
A02C09A
FLOAT HEIGHT
1Idle speed screw 2Air screw
To Adjust Height Bend the contact tab of float arm until the specified height is reached1