6. COOLING SYSTEM MXU 500 IRS Radiator Cap REPLACEMENT/AIR BLEEDING Remove the front center cover and right footboard (refer to the "FRAME COVERS" section in the chapter 2). When filling the system or reserve tank with coolant (checking the coolant level), place the machine in a vertical position on a flat, level surface. Remove the radiator cap. Bypass Hose Loosen the hose band Disconnect the bypass hose from water pump or remove the drain plug and drain the coolant from the system. Drain Plug Band Reserve Tank Cap Remove the reserve tank cap and drain the coolant from the reserve tank. Reconnect the bypass hose securely. Reserve Tank 6-6