2001 Ski-Doo Factory Shop Manual Volume Two, Page 146Get this manual
Subsection 08
Section 04 ENGINE (CARBURETOR AND FUEL PUMP)
DPM MANIFOLD LEAK TESTING
Disconnect all carburetor venturi hoses from DPMUsing tubing, connect carburetor venturi nipples together as per following illustration and proceed with air tightness test by connecting tester onto third nipple; must hold 35 kPa (5 PSI) vacuum for 10 secondsDPM