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Cooling System
Maintenance
DANGER
Discharge of hot pressurized coolant or touching
hot radiator and surrounding parts can cause severe
burns.
• Do not remove the radiator cap when the engine
is hot. Always allow the engine to cool at least
15 minutes or until the radiator cap is cool
enough to touch without burning your hand
before removing the radiator cap.
• Do not touch radiator and surrounding parts
that are hot.
DANGER
The rotating fan and drive belt can cause personal
injury.
• Do not operate the machine without the covers
in place.
• Keep fingers, hands and clothing clear of
rotating fan and drive belt.
• Shut off the engine and remove the ignition key
before performing maintenance.
CAUTION
Swallowing engine coolant can cause poisoning.
• Do not swallow engine coolant.
• Keep out of reach from children and pets.
Checking the Cooling System
Service Interval: Before each use or daily
The cooling system is filled with a 50/50 solution of water
and permanent ethylene glycol anti freeze. Check the level of
the coolant in the expansion tank at the beginning of each day
before starting the engine. The capacity of the cooling system
is 7.5 liters (6 quarts).
1. Check the level of the coolant in the expansion tank
(Figure 53). The coolant level should be between the
marks on the side of the tank.
1. Expansion tank
2. If coolant level is low, remove the expansion tank cap
and replenish the system. Do not overfill.
3. Install the expansion tank cap.
Cleaning the Radiator
Service Interval: Before each use or daily
Every 1,500 hours
Every 200 hours
Every 2 years
To prevent the engine from overheating, the radiator must
be kept clean. Normally, check the radiator daily and, if
necessary, clean any debris off these parts. However, it will
be necessary to check and clean the radiator frequently in
extremely dusty and dirty conditions.
Note: If the mower deck or engine shuts off due to
overheating, first check the radiator for excessive buildup of
debris.
Clean the radiator as follows:
1. Open the hood.
2. Working from the fan side of the radiator, blow out
debris with low pressure (50 psi) compressed air (do
not use water). Repeat the step from the front of the
radiator and again from the fan side.
3. After the radiator is thoroughly cleaned, clean out
debris that may have collected in the channel at the
radiator base.
4. Close the hood.
45
Figure 53
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