8-17
Chapter 8 PERIODIC INSPECTION AND MAINTENANCE PROCEDURES
Cooling System
Coolant - Change
Radiator Cap - Open/Close
Note: If the specification of radiator cap differs from the
contents of this operation manual, follow the
manufacturer's operation manual.
Fig. 8-19 radiator Cap
Do not dump the coolant (containing LLC) drained from the engine.
Such a way of disposal is strictly prohibited by laws and regulations.
Abide by the applicable law and regulations when discarding drained coolant.
When a coolant mixed with the LLC recommended by our company is used, replace coolant every 8000 hours or
2 years, whichever comes first for continuous use engine and general purpose engine. For emergency use
engine, replace coolant once every 2 years.
Never open the radiator cap during the operation or
immediately after the stop. Stop the engine and open
the cap after the coolant temperature lowers suffi-
ciently.
Place a waste cloth over the radiator cap, and loosen
the cap about a quarter-turn or stand the lever to the
upright position to release internal pressure.
The coolant is hot while engine is running and imme-
diately after the engine stops. If the cap is opened
when the coolant is at an operating temperature,
steam and hot coolant may blow out and result in
burns. To avoid a risk of getting scalded by steam,
wear thick rubber gloves or wrap a cloth around the
cap.
When fastening the radiator cap, be sure to tighten
securely.
Turn the cap about
1/4 turn to reliese
pressure.
Stand the lever to
the upright position
to reliese pressure.
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