3. INSPECTION/ADJUSTMENT MXU 550EXi/MXU500i COOLING SYSTEM COOLANT LEVEL INSPECTION Place the machine on the level ground. Remove the front center cover (refer to the "FRAME COVERS" section in the chapter 2). Check the coolant level in the coolant reservoir when the engine is cold as the coolant level will vary with engine temperature. The level should be between the "FULL" (2) and "LOW" (3) level surface. If the level is low, remove the reserve tank cap (1) and fill the tank to the "FULL" level line with 1:1 mixture of distilled water and antifreeze (coolant mixture preparation: refer to the chapter 6 "COOLING SYSTEM") Using coolant with silicate inhibitors may cause premature wear of water pump seals or blockage of radiator passages. Using tap water may cause engine damage. Check to see if there are any coolant leaks when the coolant level decrease very rapidly. If reserve tank becomes completely empty, there is a possibility of air getting into the cooling system. Be sure to remove all air from the cooling system (refer to the "COOLANT REPLACEMENT" section in the chapter 6). Reinstall the filler cap. 3-29