24. SERVICE PROCEDURE 24.2 WHEN REQUIRED 24.2.1 CLEAN INSIDE OF COOLING SYSTEM A WARNING Soon after the engine has been stopped, the coolant is hot and can cause personal injury. Allow the engine to cool before draining water. Never remove the radiator cap when the engine is at operat- ing temperature. At operating temperature, the coolant is under pressure. Steam blowing up from the radiator could cause personal injury. Allow the engine to cool until the radiator filler cap is cool enough to touch with your hand. Remove the filler cap slowly to relieve pressure. Never be under the machine with the engine running.
To avoid serious injury, always stop the engine before being under the machine to open the drain valve. When removing drain plug, avoid pouring coolant on your- self. Antifreeze is flammable, so keep it away from any flame. Flushing agents, neutralizing agents, and anti-corrosive agents are strong acids or alkalize, so be careful not to get them on your skin. If you should get any of these on your skin, wash off immediately with ample water. After using the agent, do not use the empty packet for keeping food, etc. Stop the machine on level ground when cleaning or changing the coolant.
Clean the inside of the cooling system, change the antifreeze, and replace the corrosion resistor according to the table below. REMARK When using a corrosion resistor cartridge element marked RE- PLACE EVERY 500 HOURS, see the table on the next page.
Kind of coolant Cleaning inside of Adding corrosion cooling system and resistant KI changing coolant (in hard water areas) Permanent type antifreeze Every year (autumn) or (All season type) every 2000 hours whichever comes first Non permanent type Every 6 months (spring, Every 1000 hours and antifreeze containing autumn) when cleaning the inside ethylene glycol (Winter, (Drain antifreeze in spring, of the cooling system and one season type) add antifreeze in autumn) when changing coolant Every 6 months or every When not using antifreeze 1000 hours whichever comes first 3-22