1984 Ski-Doo Shop Manual, Page 147Get this manual
SECTION 02 ENGINE SUB-SECTION 07 (534 ENGINE TYPE)
INSPECTION
Check general condition of hoses and clamp tightness
DRAINING THE SYSTEM
BWhen the liquid is warmed to 50 (122 F), the thermostat opens the circuit, water pumpengineheat exchangersreservoir to keep the liquid at the desired temperature(See the diagram to the exploded view) These two function have the advantage of preventing massive entry of cold water into the engine
To drain the cooling system, remove the coolant tank cap and siphon the coolant mixture using primer pump, length of plastic hose and steel tubing inserted as deep as possible into the lower hose of the tankWARNING: Use PRIMER PUMP to siphon the coolant mixtureDo not siphon with your mouthThe coolant mixture is poison and can be fatal if swallowed
WARNINGNever drain or refill the cooling system when engine is hot
From cy linder head
To heat exchangers
REFILLING THE SYSTEM
Coolant tank