Toro 25450W Operator's Manual page 67

Figure 101
1. Drain valve
9. Close the drain valve
10. Remove the drain hose and clamp
Figure 100).
Flushing the Cooling System
Engine and radiator coolant capacity: 18.5 L (19.5 US qt)
1. Condition the cooling system as follows:
A. Ensure that the coolant is drained from the
radiator and that the drain valve is closed
101).
B. Add a cooling system cleaning solution to the to
the cooling system through the filler neck of the
recovery tank
Note: Use cleaning solution of sodium carbonate
and water (or a commercially available equivalent).
Follow the directions that come with the cleaning
solution.
(Figure 101).
(Figure 99
(Figure 102).
and
1. Reservoir door
2. Filler neck (recovery tank)
C. Operate the engine for 5 minutes or until the
(Figure
coolant temperature in the command-center
display indicates 82°C (180°F), then stop the
engine
Important: Do not install the recovery-tank
cap.
1. 180° F water temperature (command-center display)
The cleaning solution is hot and can
cause burns.
Stay away from the discharge end of the
coolant drain hose.
67
Figure 102
3. Funnel
4. Coolant system cleaning
solution
(Figure 103).
Figure 103
CAUTION