2004 Ski-Doo Elite Factory Service Manual, Page 111Get this manual
Section 04 ENGINE Subsection 06 (COOLING SYSTEM)
DRAINING THE SYSTEM
WARNING
To prevent risk of burn injuries, Never open coolant reservoir cap, drain or refill cooling system when engine is hotNever open coolant reservoir cap while someone is seated in the vehicleRemove coolant reservoir cap no1Siphon coolant from reservoir no2NOTE: Insert siphon tube as deep as possible in hose connected at bottom of reservoir
The heat exchangers need to be drainedProceed as followsRemove muffler and the rear shield plateRefer to EXHAUST SYSTEMDisconnect LH hose no6 of LH heat exchanger no4Siphon coolant from heat exchanger fitting