KYMCO Downtown 300i ABS, Руководство по обслуживанию

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13. FUEL INJECTION SYSTEM
13-1
Downtown 300i ABS
SERVICE INFORMATION
GENERAL INSTRUCTIONS
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Scooter services can be done with the engine installed in the frame.
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Be sure to relieve the fuel pressure before fuel pump or fuel hose removal.
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Bending or twisting the control cables will affect operation and could cause the cables to stick or
bind, resulting in loss of vehicle control.
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Work in a fully ventilated area. Smoking or allowing flames or sparks in the work area or where
gasoline is stored can cause a fire or explosion.
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Do not apply the Carburetor Cleaners to the inside of the throttle body, which is coated with
molybdenum.
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Do not snap the throttle valve from fully open to fully close after the throttle cable has been
removed; it may cause incorrect idle speed.
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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.
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Seal the cylinder head intake ports with tape or a clean towel to prevent dirt and debris from
entering the intake ports after the throttle body has been removed.
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Do not damage the throttle body. It may cause incorrect throttle and idle valve synchronization.
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Do not take the fuel pump on the ground downward.
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Always replace the packing when the fuel pump is removed.
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The electronic fuel injection system is equipped with the self-diagnostic system. If the Check
Engine Lamp “CELP” illuminate while riding, follow the self-diagnostic procedures to solve the
problem.
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A faulty AFI problem is often related to poorly connected or corroded connectors. Check those
connections before proceeding.
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When disassembling the fuel injection parts, note the location of the O-rings. Replace them with
new ones upon reassembly.
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Do not disconnect the battery negative (-) or positive (+) cable while engine is running, it may
cause ECU damage.
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Do not disconnect or connect the ECU connector during the ignition switch “ON”; it may
cause the ECU damage.