Bleed cooling system

AR20.00-S-1142-06E

Bleed cooling system

 Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

Model

447 with engine 274, 622, 651

Model

448 with engine 274

1

Switch heater to maximum heating output and allow engine to warm up at average engine speed.

2

Continuously refill coolant until coolant level reaches marking in coolant expansion reservoir.

3

Once the coolant temperature reaches approx. 60 to 70 °C, close coolant expansion reservoir with cap.