Coolant - Flushing

To clean the cooling system, back flush the radiator and engine with clean water.

Remove both radiator hoses from the engine. Attach the water supply to the lower radiator connection and back flush the radiator.

If the radiator shows mineral build-up, scale, rust or oil, use a heavy duty radiator cleaner and follow the manufacturer's directions.





Remove the top heater hose. Attach the water supply to the heater line and back flush the engine.

If the radiator shows mineral build-up, scale, rust or oil, use a heavy duty radiator cleaner and follow the manufacturer's directions.





Refill the cooling system with a mixture of 50% water and 50% ethylene-glycol type antifreeze. Refer to the Specifications for further details.





During filling, air must be vented from the engine coolant passages. the thermostat out the top radiator hose and fill opening.

The system has a maximum fill rate of 14 liters/minute [3.5 U.S. gallons/minute]. Do not exceed this fill rate.





Install the pressure cap. Start the engine and operate it until ft reaches a temperature of 83°C [181°F]. Check the system for leaks.

WARNING: If the engine has been operating and the coolant Is hot, wait until the temperature Is below 50°C [120°F] before removing the pressure cap. Failure to do so can cause personal injury from heated coolant spray.

CAUTION: Re-check the cooling system to insure total system is full of coolant.