Edition 2 Chapter 1 Page 1-36
Feb/2013 Maintenance and Service
D. Clean the Cooling System
Operate the engine until it increases to the usual temperature of 185° F (85° C).
If the water temperature is too low, the thermostat cannot open and the coolant
cannot flow through the radiator. Clean the cooling system as follows:
(1) Loosen the radiator drain cock to fully drain the engine coolant. Operate
the engine at idle speed (as you remove the engine coolant) for five
seconds.
(2) Close the radiator drain cock and remove the radiator cap. Fill the radiator
with a fluid to clean the engine coolant system and tap water. Install the
radiator cap.
(3) Operate the engine until it increases to the usual temperature 185° F
(85° C). Set the heater control to full heat and the blower to ON.
(4) Operate the engine for 30 minutes at idle speed with no load.
(5) Stop the engine and drain the coolant system.
(6) Add tap water and operate the engine to flow through the system, then
stop the engine and drain the coolant system. Do this step again 2 or 3
times.
(7) Add the correct quantity of antirust, antifreeze and tap water to fill the
system.
(8) Operate the engine until it increases to the usual temperature 185° F
(85° C). Remove the air from the system.
(9) Stop the engine and make sure that the level of fluid in the system is at
the correct level. If necessary, add tap water to fill the system.
E. Clean the Air Cleaner
Clean the air cleaner as follows:
(1) Remove the clamp from the air cleaner and remove the rear end cover.
(2) Remove the filter element.
(3) Clean the contaminations from the inner side of the air cleaner and cover.
Make sure that the air filter element is free of contamination. If necessary,
replace the element.
(4) Install the element and cover. Tighten the clamp.
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