Need front brake master cylinder 94 fxr what is stock bore on master cyl.?

SOURCE: 1993 FXR Rear Brakes

If the Master Cylinder BORE size is the same as the bore size required for the caliper you want to replace it with, then YES, you can use your existing Master Cylinder.

SOURCE: HARLEY- 02 DYNA WIDE GLIDE

Starting the bike has effect on the front brakes and I doubt moving the bike does either. The problem sounds like you're using an improper procedure to bleed the brakes.

First, fill the front master cylinder reservoir with the proper type of brake fluid. Then, bleed the master cylinder. Use this EXACT procedure. Squeeze the lever and hold it. Then loosen the line from the front master cylinder and allow the pressure to bleed off. Release the brake lever. Repeat this procedure again. Do not allow the master cylinder reservoir to run dry during any part of this bleeding process.

Then move to the caliper bleeder valve. Squeeze and hold the brake lever, open the bleeder valve and bleed off the pressure, close the valve, release the lever and allow the master cylinder to refill. Repeat until you get a full firm brake lever. Top of the master cylinder. Wait a few minutes and test the brakes.

If you cannot get anything to work out, look in the very bottom of the master cylinder reservoir and you'll two holes. One is relatively large and the other is very small. Using a small drill bit or a strand of wire, make sure the small hole is open. I've seen trash plug this hole and the brakes not work correctly. DO NOT MIX DIFFERENT TYPES OF BRAKE FLUID. The correct brake fluid to use is printed on top of the reservior top.

Make sure you test the brakes before riding the bike, improper brake servicing can lead to serious injury or death.

Good Luck
Steve

Mot Smith

• 500 Answers
• Posted on Sep 27, 2011

SOURCE: There is a lot of play in the front brake on my 03

There was a problem w/ 03 front master cylinders there are often replaced ..complaint is lever goes all the way to grip....