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Cooling System
Maintenance
DANGER
Discharging 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 antifreeze.
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
75).
Note:
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.
Important:
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. It may be necessary to check and
clean the radiator more 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 (345 kpa; 50 psi)
compressed air . Repeat the step from the front
of the radiator and again from the fan side.
Important:
Do not use water to clean the
radiator.
3.
After you thoroughly clean the radiator, clean out
debris that may have collected in the channel at
the radiator base.
4.
Close the hood.
59
Figure 75
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