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Cooling System
Maintenance
Cooling System Safety
•
Swallowing engine coolant can cause poisoning;
keep out of reach from children and pets.
•
Discharge of hot, pressurized coolant or touching
a hot radiator and surrounding parts can cause
severe burns.
– Always allow the engine to cool at least 15
minutes before removing the radiator cap.
– Use a rag when opening the radiator cap, and
open the cap slowly to allow steam to escape.
•
Do not operate the machine without the covers
in place.
•
Keep your fingers, hands and clothing clear of
rotating fan and drive belt.
Coolant Specification
The coolant reservoir is filled at the factory with a
50/50 solution of water and ethylene glycol base
extended-life coolant.
Important:
Use only commercially available
coolants that meet the specifications listed in the
Extended Life Coolant Standards Table.
Do not use conventional (green) inorganic-acid
technology (IAT) coolant in your machine. Do
not mix conventional coolant with extended-life
coolant.
Coolant Type Table
Ethylene-Glycol Coolant
Type
Extended-life antifreeze
Important:
Do not rely on the color of the coolant
to identify the difference between conventional (green)
inorganic-acid technology (IAT) coolant and extended-life
coolant.
Coolant manufacturers may dye extended-life coolant in
one of the following colors: red, pink, orange, yellow,
blue, teal, violet, and green. Use coolant that meets the
specifications in the Extended Life Coolant Standards
Table.
Extended Life Coolant Standards
ATSM International
D3306 and D4985
Important:
Coolant concentration should be a
50/50 mixture of coolant to water.
Corrosion Inhibitor Type
Organic-acid technology
(OAT)
SAE International
J1034, J814, and 1941
•
Preferred: When mixing coolant from a
concentrate, mix it with distilled water.
•
Preferred option: If distilled water is not available,
use a pre-mix coolant instead of a concentrate.
•
Minimum requirement: If distilled water and
pre-mix coolant are not available, mix concentrated
coolant with clean drinkable water.
Checking the Cooling
System
Service Interval: Before each use or daily
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 L (6 US qt).
1.
Check the level of the coolant in the expansion
tank
(Figure
44). The coolant level should be
between the marks on the side of the 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.
1. Expansion tank
Cleaning the Radiator
Service Interval: Before each use or daily Clean the
radiator more frequently in extremely
dusty and dirty conditions.
Keep the radiator clean to prevent the engine from
overheating.
Note:
If the attachment or engine shuts off due to
overheating, first check the radiator for an excessive
buildup of debris.
1.
Open the hood and secure the prop rod.
47
Figure 44
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