1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 235Get this manual
ENGINES Magnum Cooling System Cooling System Bleeding
When system is empty: 12345Fill coolant reservoir bottle to full markRemove hose from thermostat cover and remove radiator capAdd coolant slowly until it flows from the thermostat cover outlet fittingReinstall hose and tighten clampAdd coolant to radiator slowly until full
Purge air from system as outlined in the following procedure:
WARNING: Never remove radiator cap when engine is hotThe cooling system is under pressure and serious