Cleaning The Cooling System - Toro 2226 Operator's Manual

Cleaning the Cooling
System
Service Interval: Every 800 hours/Yearly (whichever
comes first) (Clean the cooling
system if the coolant becomes dirty
or rust colored.)
Draining the Coolant from the
System
Important:
Do not pour coolant onto the ground
or into an unapproved container that can leak.
1. Move the machine to a level surface, shut off
the engine, and remove the key.
2. Allow the engine to cool.
3. Open the front hood.
4. Remove the radiator cap
5. Place a drain pan under the drain plug
106).
Note:
The coolant capacity of both the engine
and the radiator is 16.8 L (17.7 US qt).
Figure 106
1. Radiator Cap
6. Open the radiator drain plug and allow the
coolant system to drain completely.
Note:
Dispose of the used coolant properly
according to local codes.
7. Clean the threads on the drain plug and apply 3
layers of PTFE sealing tape.
8. Close the drain plug
(Figure 105).
(Figure
2. Radiator hose and drain
plug
(Figure 106).
Flushing the Cooling System
Engine and radiator coolant capacity: 16.8 L (17.7
US qt)
1. Move the machine to a level surface, shut off
the engine, and remove the key.
2. Condition the cooling system as follows:
A. Ensure that the coolant is drained from the
radiator and that the drain plug is closed;
refer to
System (page
B. Add a cooling system cleaning solution to
the radiator through the filler neck
107).
Note:
oz dry) of sodium carbonate for every 17
L (18 US qt) of water; otherwise, use a
commercially available equivalent. Follow
the directions that come with the cleaning
solution.
1. Filler neck (radiator)
2. Funnel
C. Close the drain plug
Important:
cap.
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D. Operate the engine for 5 minutes or until the
coolant temperature indicates 82° C (180°
F), and then shut off the engine.
CAUTION
The cleaning solution is hot and can
cause burns.
Stay away from the discharge end of
the coolant drain.
E. Open the drain plug for the radiator, and
drain the cleaning solution into a drain pan.
87
Draining the Coolant from the
87).
Use cleaning solution of 21 g (12
Figure 107
3. Coolant system cleaning
solution
(Figure 106).
Do not install the radiator
(Figure
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