Sym Quad Raider 600, Service Manual

Page: 218 / 247

17. REAR BRAKE & REAR WHEEL & REAR CUSHION
17-13
Brake Fluid Replacement / Air-bleed
Connect drain hose to air-bleed valve.
Open the drain valve on the caliper and operate
the brake lever until the old brake fluid is entirely
drained out.
Close the drain valve and add specified brake fluid
into the brake master cylinder.
Recommended brake fluid: WELLRUN DOT 3
brake fluid
Connect one end of transparent hose to the drain
valve, and put the other end into a container.
Open the drain valve around 1/4 turns, and at the
same time hold the brake lever until the there is no
air bubble in the drain hose and also feeling
resistance on the brake lever.
Close the drain valve when finishing the brake
system refilling fluid procedure, and operate the
brake lever to check whether air bubble is in
brake system or not.
If brake is still soft, please bleed the system as
described below:
1. Hold the brake lever tightly and open the drain
valve around 1/4 turn, and then close the valve.
Caution
Do not release the brake lever before the
drain valve is closed.
Always check the brake fluid level when
carrying out the air bleeding procedure to
avoid air entering the system.
2. Slowly release the brake lever, and wait for a
few seconds until it reaches its top position.
3. Repeat the steps 1 and 2 until there is no air
bubble at the end of the hose.
4. Close the drain valve tightly.
5. Make sure the brake fluid is at the UPPER level
of the master cylinder, and refill the fluid if
necessary.
6. Cover the cap.
Transparent hose
Bubble
Air-bleed valve
Air-bleed valve
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