18. LIGHTS/INSTRUMENTS/SWITCHES/HORN ZING125 FUEL UNIT Fuel Unit Keep flames and sparks away from the working area. REMOVAL Remove the seat and fuel tank. (Refer to 4- 10.) Remove the four nuts attaching fuel tank. Remove the fuel unit. Be careful not to bend or damage the fuel unit float arm. Nuts INSPECTION Check the fuel unit O-ring for wear, damage or deformation. Replace if necessary. Measure the resistances between the fuel Full unit wire terminals with the float at the upper Empty (Full) and lower (Empty) positions. Resistances: Upper (Full): 925 Lower (Empty): 70100 Connect the fuel unit wire coupler to the wire harness and turn the ignition switch ON. Check the fuel gauge needle for correct indication by moving the float up and down. If the needle does not move to "F" or "E", if the fuel gauge is faulty and replace it with a new one. If the needle swings, the fuel unit might faulty and replace it with a new one. Fuel Gauge Up INSTALLATION Install the fuel unit in the reverse of removal. Down Check for fuel leakage after installation. 18-6