PERIODIC SERVICE 72 If it freezes, coolant can damage the cylinders and radiator. If the ambient temperature falls below 0 (32 ) or before a long-term storage, let out cooling water completely, or mix fresh water with long-life coolant and fill the radiator and recovery tank with the mixture. 1. Long-life coolant (hereafter LLC) comes in several types. Use ethylene glycol (EG) type for this engine. 2. Before employing LLC-mixed cooling water, fill the radiator with fresh water and empty it again. Repeat this procedure 2 or 3 times to clean up the inside. 3. Mixing the LLC Put the LLC in cooling water in the percentage (%) for a target temperature.
When mixing, stir it up well, and then fill into the radiator. 4. The procedure for the mixing of water and antifreeze differs according to the make of the antifreeze and the ambient temperature. Refer to SAE J1034 standard, more specifically also to SAE J814c. (1) Radiator cap (2) Recovery tank (A) "FULL" (B) "LOW" A Do not start engine without coolant. A Use clean, fresh water and anti-freeze to fill the radiator and recovery tank. A When the anti-freeze is mixed with water, the antifreeze mixing ratio must be less than 50%. A Securely tighten radiator cap. If the cap is loose or improperly fitted, water may leak out and the engine could overheat.
A When the antifreeze is mixed with water, the antifreeze mixing ratio must be less than 50%. B Anti-Freeze * At 1.013 x 10 Pa (760 mmHg) pressure (atmospheric). To avoid personal injury: A When using antifreeze, put on some protection such as rubber gloves. (Antifreeze contains poison.) A If you should drink antifreeze, throw up at once and take medical attention. A When antifreeze comes in contact with the skin or clothing, wash it off immediately. A Do not mix different types of Antifreeze. The mixture can produce chemical reaction causing harmful substances. A Antifreeze is extremely flammable and explosive under certain conditions. Keep fire and children away from antifreeze.
A When draining fluids from the engine, place some container underneath the engine body. A Do not pour waste onto the grounds, down a drain, or into any water source. A Also, observe the relevant environmental protection regulations when disposing of antifreeze. A higher boiling point is obtained by using a radiator pressure cap which permits the development of pressure within the cooling system. 5. Adding the LLC (1) Add only water if the mixture reduces in amount by evaporation. (2) If there is a mixture leak, add the LLC of the same manufacturer and type in the same mixture percentage. * Never add any long-life coolant of different manufacturer.
(Different brands may have different additive components, and the engine may fail to perform as specified.) 6. When the LLC is mixed, do not employ any radiator cleaning agent. The LLC contains anticorrosive agent. If mixed with the cleaning agent, sludge may build up, adversely affecting the engine parts. 7. Kubota's genuine long-life coolant has a service life of 2 years. Be sure to change the coolant every 2 years. A The above data represent industry standards that necessitate a minimum glycol content in the concentrated antifreeze. Vol % Anti-freeze Freezing Point Boiling Point* 40 -24 -12 106 222 50 -37 -34 108 226