Toro 41593 Operator's Manual page 52

Figure 66
1. Radiator cap
2. Expansion tank
3. Place a large drain pan under the radiator.
4. Open the drain (Figure
the pan.
Figure 67
5. Close the drain (Figure
6. Remove the radiator cap
7. Slowly fill the radiator with coolant to approximately
2.5 cm (1 inch) below the sealing surface of the cap.
3. Expansion tank cap
4. Full line, expansion tank
67) and drain the coolant into
67).
(Figure 66).
Note: Use enough coolant to fill the engine and the
system lines. This will allow for the coolant to expand
without it overflowing while the engine is warming up.
8. Start the engine with the cap loosely on the radiator
(Figure 66).
9. Allow the engine to warm up until the thermostat
opens.
Note: This usually occurs between 175 and 190
degrees F.
CAUTION
As the engine continues to run, the coolant will
become hot and pressurized. If you open the
radiator cap when the coolant is hot, it could
spray out and severely burn you or bystanders.
• Allow the engine to cool for at least 15
minutes before opening the radiator cap.
The radiator cap must be cool to the touch.
• Wear protective clothing and avoid contact
with hot coolant as you open the radiator
cap.
10. Once the coolant has warmed up, top off the coolant
level to the sealing surface of the cap and tighten the
cap (Figure 66).
11. Open the expansion tank cap and fill the tank with
coolant to the Cold level
12. Check the coolant levels after several engine start up
and shut down cycles.
Note: Add coolant to the radiator and expansion tank
as needed.
52
(Figure 66).