2002-2003 Bombardier Baja DS650 Service Manual, Page 120Get this manual
Subsection 03
Section 04 FUEL SYSTEM (CARBURETOR AND AIR INTAKE SILENCER)
GENERAL
Before performing any job on fuel system, always disconnect BLACK (-) cable from battery
Carburetor Float Level Adjustment
Correct fuel level in float chamber is vital toward maximum engine efficiencyTo check for correct float level proceed as follows: Remove float bowl no2 and gasket no3 from carburetor Make sure that float arm no4 is symmetric, not distortedWith carburetor chamber up side down: Measure height between bowl seat and the top edge of float armUse float level gauge (PN 529 035 520) Keep float level gauge perfectly vertical and in line with main jet holeEnsure that both float level gauge tips are properly positioned on carburetor body and that "L" arm is leaning on float with compressing valve springRefer to following photos for proper float level gauge positioning and to TECHNICAL DATA for proper level