Coolant System Drain and Refill

Performed every 4 years.

1. Remove pressure cap.
2. Remove lower hose from radiator, and heater hoses at bulkhead. Use caution when coolant is hot.
3. Reinstall hoses after coolant has drained.
4. Open the coolant bleed screws in the upper hose and the heater return hose (Protect generator).
5. Fill engine with coolant (50/50 Mix) through thermostat housing (Expansion tank in COOPER S).
6. Close bleed screws when air free coolant flows.
7. Continue to fill through thermostat housing (or Expansion Tank).
8. Fill expansion tank to "MAX".
9. Start engine and run at idle. Top up coolant as necessary.
10. Turn off engine and install pressure cap.