KYMCO Venox 250 Service Manual page 207

19. AFI (AUTOMATIC FUEL INJECTION)
SERVICE INFORMATION
GENERAL INSTRUCTIONS
● This section covers service of the fuel system.
● These services can be done with the engine installed in the frame.
● Be sure to relieve the fuel pressure before fuel pump or fuel hose removal.
● Bending or twisting the control cables will impair smooth operation and could cause the cables to
stick or bind, resulting in loss of vehicle control.
● Work in a well ventilated area. Smoking or allowing flames or sparks in the work area or where
gasoline is stored can cause a fire or explosion.
● Do not apply commercially available carburetor cleaners to the inside of the throttle bore, which is
coated with molybdenum.
● Do not snap the throttle valve from fully open to fully close after the throttle cable has been
removed; it may cause incorrect idle operation.
● Do not loosen or tighten the painted bolts and screws of the throttle body. Loosening or tighten
them can cause throttle and idle valve synchronization failure.
● Seal the cylinder head intake ports with tape or a clean cloth to keep dirt and debris from entering
the intake ports after the throttle body has been removed.
● Do not damage the throttle body. It may cause incorrect throttle and idle valve synchronization.
● Do not push the fuel pump base under the fuel tank when the fuel tank is stored.
● Always replace the packing when the fuel pump is removed.
● The electronic fuel injection system is equipped with the self-diagnostic system described on page
7-14 (without diagnostic tool) or page 15-24 (using PDA). If the Check Engine Lamp "CELP"
illuminate while riding, follow the self-diagnostic procedures to remedy the problem.
● A faulty AFI system is often related to poorly connected or corroded connectors. Check those
connections before proceeding.
● When disassembling the fuel injection parts, note the location of the O-rings. Replace them with
new ones upon reassembly.
● Do not disconnect the battery negative or positive cable while engine is running, it may cause
ECU damage.
● Connect the battery cables mistook may cause ECU damage.
● Do not disconnect or connect the ECU connector during the ignition switch "ON"; it may cause
the ECU damage
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VENOX250/250i