1980 Ski-Doo Shop Manual, Page 93Get this manual
SECTION 03 SUB-SECTION 02, (ENGINES)
COOLING SYSTEM
INSPECTION
Check general condition of hoses and clamps tightness
REFILLING THE SYSTEM
Capacity: 6.25 liters (1.4 Imp, gaL) (17 USgaL) 60 concentrated antifreeze
DRAINING THE SYSTEM
To drain the cooling system, remove the coolant tank capRemove the RHaccess gnll, and connect length of plastic hose to the radiator drain valve in order to drain the cooling system outside of the body, Open the drain valve+