Right this is how I do it and its worked for me. You gonna need dot 4/5.1, an 8mm spanner, 4mm allen key and something to wedge in the caliper. 1. Postion the brake lever so the resivior is facing upwards and is fairly level. 2. Take you pad, clip and pin out and take the cap off the bleed valve on the caliper. 3. Take the cap off the resivior and remove the diaphram (you made a small starkey to get cap off). 4. Using paper/wood/whatever wedge it in the caliper to make sure the pistons can't move. 5. Top up the resivior and start pumping the lever about 20 times. 6. Hold the lever in and under the bleed valve a quater of a turn, you should feel/see air and fluid come from the valve and the lever will go into the bars. After a second or two tighten it back up. 7. Let the lever go back and keep repeating steps 5 and 6 making sure the resivior never gets empty, You should stop doing this once you feel the pull and it does not change plus there is no air coming out the bleed valve. 8. Now this is done you have to put evrything back togther. Its best to do the diaphrame and cap first but before you put pads in wipe your caliper so as to ensure no contamination. 9. Put wheel back in bike and ride . If it don't work you can try bleeding it again or taking to a shop. Matt Edit-Try what adam said it might need adjusting using the little brass barrel.