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4-41 4 AE114 AE141 Arctic Cat Batteryless EFI System The Arctic Cat Batteryless EFI System operates off a series of coils located on the stator. The batteryless EFI system is made up of the follow- ing components. 1. Charge coils (1 and 2) which are located on the stator provide AC voltage to operate the CDI unit. The CDI unit is located within the ECU. The AC voltage is converted to DC voltage within the ECU. 2. A fuel pump coil located on the stator operates the low voltage, high output fuel pump. At cranking speed, the high output fuel pump provides enough fuel to charge the fuel rail. 3. An injector coil located on the stator provides the injectors with DC voltage for operation through the ECU. 4. A lighting coil located on the stator plate provides output to operate accessories and the lighting system. 5. An electrical control unit (ECU) calculates input from five sensors (intake air temperature sensor, water temperature sensor, throttle position sensor, ignition timing sensor, barometric pressure sensor) to provide the engine with the correct fuel mixture and timing for optimum operation. EFI FEATURES 1. Automatic compensation for temperature. 2. Automatic compensation for altitude. 3. Optimum throttle response through high pressure injection. 4. Quick starting in every condition. 5. Improved fuel efficiency with maximum mileage in every condition. 6. Engine RPM more stable in every condition. PRECAUTIONS 0729-325 ! WARNING Whenever working on the fuel system if a fuel hose ! WARNING Always tighten fuel hose clamps securely. ! CAUTION Always use resistor-type spark plugs and spark |