Changing Engine Coolant - Toro 07367 Operator's Manual

Changing Engine Coolant

Service Interval: Every 1,000 hours/Every 2 years
(whichever comes first)
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 radiator cap when the
engine is running.
• Allow engine to cool at least 15 minutes or
until the radiator cap is cool enough to touch
without burning your hand.
• Use a rag when opening the radiator 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.
1. Reserve tank cap
Figure 64
Figure 65
5. Disconnect the lower radiator hose and allow coolant
to flow into a drain pan. When coolant stops,
connect the lower radiator hose.
6. Open the bleed screw on top of the water pump
(Figure 66).
1. Bleed screw
7. Remove the coolant drain plug from the engine and
allow coolant to flow into a drain pan. When coolant
stops, install the drain plug.
8. Slowly fill the radiator with a 50/50 mixture of water
and permanent ethylene glycol anti–freeze
9. With the bleed screw open, start the engine. Allow
engine to idle until the fluid has a clean stream out
of the bleed screw.
10. Close the bleed screw while the engine is running
11. Top off the radiator and install the cap.
12. Slowly fill the reserve tank until level reaches the
Cold line. Do not overfill. Install the reserve tank
cap.
13. Start the engine and operate it until warm.
14. Stop the engine. Check the coolant level and
replenish it, if required.
50
Figure 66