Changing The Engine Coolant - Toro 07383 Operator's Manual

Changing the Engine Coolant

Service Interval: Every 1,000 hours/Every 2 years
(whichever comes first)
Coolant type: 50/50 mixture of water and permanent
ethylene-glycol antifreeze
Note: Multiple cycles of the following procedure may be
required to properly flush and change the engine coolant.
1. Park the machine on a level surface.
2. Raise the bed (if so equipped) and place the safety
support on the extended-lift cylinder to hold up the
bed.
CAUTION
If the engine has been running, the
pressurized, hot coolant can escape and cause
burns.
• Do not open the reserve tank cap when the
engine is running.
• Allow engine to cool at least 15 minutes or
until the reserve tank cap is cool enough to
touch without burning your hand.
• Use a rag when opening the reserve tank
cap, and open the cap slowly to allow
steam to escape.
3. Remove the radiator cap.
1. Radiator cap
4. Remove the reserve-tank cap
Figure 62
(Figure 63).
1. Reserve tank-cap
2. Reserve tank
5. Disconnect the lower radiator hose and allow coolant
to flow into a drain pan.
6. When coolant stops, connect the lower radiator hose.
7. Remove the coolant-drain plug from the engine and
allow coolant to flow into a drain pan.
8. When coolant stops, install the drain plug.
9. Slowly fill the radiator with a 50/50 mixture of water
and permanent ethylene-glycol antifreeze.
10. Install the radiator cap.
11. Fill the reservoir tank to the bottom of the filler neck.
12. Start the engine and allow it to idle.
13. As air escapes, fill the reservoir to the bottom of the
filler neck.
Note: Do not allow the engine to heat up to the
running temperature.
14. Install the reserve-tank cap.
15. Run the machine until it reaches the operating
temperature.
16. Turn off the machine and allow it to cool.
17. Check the coolant level again, and replenish it, if
required.
50
Figure 63