Sym Citycom 300i - Brake Fluid Replacement

14. Brake System
14-6
Brake fluid replacement
Connect drain hose to brake bleeder valve.
Open the valve on the calipers and delay valve
the brake lever until the old brake fluid is entirely
drained out.
Close the valve and add specified brake fluid into
the brake master cylinder.
Recommended brake fluid: LIQUI MOLY
DOT 3 brake fluid
Connect one end of transparent hose to the drain
valve, and put the other end into a container.
Open the 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 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. Tightly hold the brake lever and open the valve
around 1/4 turns, 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 enter into 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. Tightly close the drain valve.
5. Make sure the brake fluid is in the UPPER level
of the master cylinder, and refill the fluid if
necessary.
6. Cover the cap
Caution

Divulges the air to have to pump by the minute
first divulges, then to caliper.
 May use fluid the replacement machine, the
replacement fluid, the time is quicker, the air
bubble also Compared with cannot remain
Bubble
Brake bleeder valve
Brake bleeder valve
Delay valve
To this chapter contents
Brake bleeder valve
Transparent hose
Brake bleeder valve
Front brake
caliper
Rear brake caliper