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Cooling System
Maintenance
Checking the Coolant Level
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 coolant in the radiator and the expansion
tank at the beginning of each day before starting the
engine. The cooling system capacity is 5.5 qt (5.4 l).
If the engine has been running, the coolant may
be hot and pressurized. If you open the radiator
cap when the coolant is hot, it could spray out
and severely burn you or bystanders.
Allow the engine to cool for at least 15 minutes
before opening the radiator cap.
1. Position the sprayer on a level surface.
2. Set the parking brake, stop the pump, stop the
engine, and remove the ignition key.
3. Carefully remove the radiator cap and the expansion
tank cap (Figure 53).
Figure 53
1. Radiator cap
2. Expansion tank
4. Check the coolant level in the radiator and in the
expansion tank.
Note: The radiator should be filled to the top of
the filler neck and the expansion tank filled to the
Full mark.
3. Expansion tank cap
4. Full line, expansion tank
5. If coolant level is low, remove the expansion tank
cap and the radiator cap, and fill expansion tank to
the Full mark and the radiator to the top of the filler
neck. Do not overfill the expansion tank.
Important: Do not use water only or an
alcohol/methanol-based coolant.
6. Install the radiator cap and the expansion tank cap.
Servicing the Cooling System
Service Interval: Every 100 hours
Every 200 hours
Every 400 hours/Yearly (whichever
comes first)
Clean the radiator fins of all debris using low-pressure
compressed air or a soft brush. Clean them more often
if needed. Also check all coolant hoses and replace any
that are worn, leaking, or damaged.
Important: Do not spray water into a hot engine
compartment.
Important: Do not add coolant to an overheated
engine until the engine has fully cooled. Adding
coolant to an overheated engine may crack the
engine block.
Check the engine coolant as directed by the
manufacturer. Use 5.8 qt (5.4 l) of a solution of 50%
water and 50% permanent ethylene glycol antifreeze.
1. Position the sprayer on a level surface, set the parking
brake, stop the pump, stop the engine, and remove
the ignition key.
If the engine has been running, the coolant may
be hot and pressurized. If you open the radiator
cap when the coolant is hot, it could spray out
and severely burn you or bystanders.
Allow the engine to cool for at least 15 minutes
before opening the radiator cap. The radiator
cap must be cool to the touch.
2. When the engine is cool, remove the radiator cap
(Figure 54).
45
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