Top up rear brake fluid yamaha wr125x 2009

SOURCE: how to change the brake fluid in a yamaha xvz

Keep filling the master cylinder fluid reservoir with new brake fluid of the right type. ( DOT 3, DOT 4, Dot 5 ) Put a hose, of the right size, on the bleed screw and put the end in a jar. Pump the brake handle or pedal several times and then hold it on. Open the bleed screw, on the caliper, and fluid mixed with air will come out. Close the screw, pump it up again and repeat the process. Keep it up until you have a firm feel to the lever and no air in the brake fluid coming out. Lastly hose everything off with water to remove any trace of brake fluid.

Be patient, keep bleeding the system... this may take quite a while.

Even after lots of effort, the brakes can feel spongy. This can be from old brake lines which are expanding just a bit. The cure is new lines.

SOURCE: I have replaced rear brake

it should be right behind the foot brake on right side you can follow the rear brake line to it should be under that side cover