MAINTENANCE MAINTENANCE PROCEDURE 10. To bleed the air from the coolant, run at low idling for 5 min- utes, then run for a further 5 minutes at high idling. (When doing this, leave radiator cap (2) off.) 11. Drain the coolant from sub tank (7), wash the inside of the sub tank, then add water to between the FULL and LOW marks. 12. Stop the engine, wait for 3 minutes, then add tap water to near the water filler port, and close radiator cap (2). 4-27