Here is the thread I used when I first bled brakes.
IDK why I have not done a brake bleed tutorial. I did one for my busa.
Tools:
8mm wrench and 10 mm wrench for bleed valves.
1/8" clear plastic hose available in the plumbing dept of Home Depot or Lowe's or Ace.
Plastic recepticle to catch expressed fluid.
The technique is easy. Kaw diud a great job giving us both mastercylinder bleed and caliper bleed. Suz makes you bleed the whoole system with just the caliper bleed.
You apply and hold the brake, open the bleed valve, fluid is expressed. The lever will go to the grip. Hold it to the grip, close bleed, release lever pump up the pressure, squeeze and open bleed, express fluid, lever goes to grip again....repeat until you see no bubbles coming through the plastic hose (I find there are often some tiny bubbles that move in the line. I believe that is air that has stuck to the inside of the hose, not inside the system.
It goes like this: Squeeze, open, close, release, pump, squeeze, open, close, release, pump, squeeze, open close....
Always make sure the fluid level is kept replenished while bleeding. Fluid level should not fall below bottom of reservoir. If it does, you sucked air in and you need to start bleeding air all over.
The hardest part is to get the fluid to flow through the master cylinder after the master cylinder was drained. It seems as though there are small passages for the fluid to go through and it is blocked by air bubbles that form. A vacuum bleeder is helpful to overcome this problem. It is not to hard to to do just by bleeding normally pumping the lever as described above. Also, letting the fluid sit in the reservoir will eventually cause the fluid to flow through the master cylinder and down through the lines.
After you do this job two times you will be a pro. I have done 4-5 times. Never had a problem with air getting trapped in the system or anything else.
Start bleeding at the mastercylinder. after bubbles are gone, switch to the caliper.
You prolly will not need more than one of those small bottles but get a large to be sure you do not run out. Many people say NOT to use old brake fluid because the bottle may get contaminated with condensation. Never had that problem. I used year old fluid. Keep in in doors, no probs.
08 MIDNIGHT SAPPHIRE BLUE ZX-14 Now Deceased, will be resurected
2024 ZX-14R bran friggin NEW!