KYMCO AK 550, Service Manual

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10..Brake System
AK 550
Caution
If any of the brake line fittings, including the ABS hydraulic unit joint nuts, or the
bleed valve are opened at any time, the air must be bled completely from the
brake line.
Do not ride the scooter with air in the brake line, or the ABS could malfunction.
□ The ABS indicator light may light if the tire pressure is incorrect, a non-
recommended tire is installed, or the wheel is deformed. If the indicator light
lights, remedy the problem and clear the service code.
□ When the ABS operates, the ABS makes noise and the rider feels the reaction
force on the brake lever and brake pedal. This is a normal condition. It informs
the rider that the ABS is operating normally.
□ Service codes detected once by the ABS hydraulic unit will be memorized in
the ABS hydraulic unit. Therefore, after maintenance work is finished, be sure to
erase the service codes. Do not erase the service codes during troubleshooting.
Wait until all the checks and repair work is finished to prevent duplication of
previous service codes and unnecessary maintenance work.
□ Before delivering the scooter to the customer, be sure to erase any service
codes which might be stored in the ABS hydraulic unit. Test run the scooter at a
speed of more than 6 kph (4 mph) to see that the ABS indicator light does not
come on. Finally, test run the scooter at a speed of more than 30 km/h (20 mph)
and brake suddenly to see that the scooter stops without loss of steering control
and the ABS operates normally. (The reaction force generated is felt in the brake
lever and pedal.) This completes the final inspection.
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