Cooling System Maintenance; Servicing The Cooling System - Toro 41594 Operator's Manual

Cooling System
Maintenance

Servicing the Cooling System

Service Interval: Every 100 hours—Check the cooling
system hoses for wear and damage.
Every 400 hours/Yearly (whichever comes
first)—Check the coolant (as directed by the
manufacturer) and change if necessary.
Cooling system capacity: 5.5 L (5.8 US qt)
Coolant type: a solution of 50% water and 50% permanent
ethylene glycol antifreeze
Important: Do not add coolant to an overheated engine
until the engine has fully cooled. Adding coolant to an
overheated engine may crack the engine block.
Check the engine coolant concentration as directed by the
coolant manufacturer.
1. Position the sprayer on a level surface, set the parking
brake, stop the pump, stop the engine, and remove the
key from the starter switch.
CAUTION
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.
2. When the engine is cool, remove the radiator cap
(Figure 71).
1. Radiator cap
2. Expansion tank
3. Place a large drain pan under the radiator.
4. Open the drain
the pan.
5. Close the drain
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.
53
Figure 71
3. Expansion tank cap
4. Full line, expansion tank
(Figure 72) and drain the coolant into
Figure 72
(Figure 72).
(Figure 71).