Toro 41582 Operator's Manual page 45

1. Radiator cap
3. Place a large drain pan under the radiator.
4. Open the drain (Figure 55) and drain the coolant
into the pan.
5. Close the drain.
6. Remove the radiator cap.
7. Slowly fill the radiator with coolant to approximately
1 inch (2.5 cm) below the sealing surface of the cap.
Note: This will allow for the coolant to expand
without it overflowing while the engine is warming
up.
8. Use enough coolant to fill the engine and the system
lines.
9. Start the engine with the cap loosely on the radiator.
10. Allow the engine to warm up until the thermostat
opens.
Figure 54
Figure 55
Note: This usually occurs between 175° and 190° F.
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.
Wear protective clothing and avoid contact with
hot coolant as you open the radiator cap.
11. Once the coolant has warmed up, top off the coolant
level to the sealing surface of the cap and tighten
the cap.
12. Open the recovery bottle cap and fill with coolant to
the Cold position after you tighten the radiator cap.
13. Check the coolant levels after several shut down and
start up cycles and top off the coolant as needed.
If the engine has been running, the coolant may
be 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.
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