2001 Ski-Doo Factory Shop Manual Volume Two, Page 130Get this manual
Section 04 ENGINE Subsection 06 (LIQUID COOLING SYSTEM)
COOLING SYSTEM LEAK TEST
Install special plug (radiator cap) (PN 529 021 400) and hose pincher (PN 529 009 900) on overflow hosePressurize coolant reservoir to 100 kPa (15 PSI)Check all hoses and cylinderbase for coolant leaksSpray soapwater solution and look for air bubbles
A30C0DA
TYPICAL
When the coolant level is low enough, lift the rear of vehicle to drain the radiators
DISASSEMBLY AND ASSEMBLY
3,4, Sender and Plug
A01B4AA
529 009 900
TYPICAL
Apply Loctite 592 (PN 413 702 300) thread sealant on sender and plug to avoid leaks