KYMCO AK 550, Service Manual, Page: 40 / 461

2.Periodic Maintenance AK 550
2-9
Pump the brake lever several times and hold the lever in. While holding the lever
in, crack open the bleeder valve. The front brake lever will travel all the way to the
grip and brake fluid and/or air will come out of the bleeder valve into the 6 mm
hose. Tighten the bleeder valve before releasing the front brake lever. Pump the
lever several times again and repeat the process.
Be certain to check the master cylinder reservoir occasionally to make sure the
reservoir doesn't run dry. Add more brake fluid as necessary. Continue this
process until clean brake fluid comes out of the bleeder valve and there are no air
bubbles. The brake lever should feel firm.
Tighten the bleeder valve to specification and push its rubber cover over the
nipple.
Make sure the reservoir has the proper amount of fluid.
Place the rubber diaphragm, plastic piece and cover over the reservoir.
Thread in the reservoir cover screws and tighten them securely with a #2 Phillips
screwdriver.
Check the function of the brakes before operating the machine.