How to bleed motorcycle brakes with a vacuum pump?

The first step to bleed motorcycle brakes with a vacuum pump is to install the vacuum pump onto your bike. Make sure to place the pump somewhere with good air flow, such as under the seat or behind the bike. Connect the hose from the vacuum pump to your motorcycle's master cylinder, usually located under or behind the bike. If you don't know where to find it, ask your mechanic or look it up online.

How to bleed motorcycle front brake with a compressor?

If you want to bleed the front brake through the system quickly, you can use a compressor. Compress the brake lines gently and slowly, and watch for bubbles. Once you’ve stopped the bubbles, you can remove the bleeder screw and slowly release the air. Replace the screw and check the brake system for bubbles again. If you see a few bubbles, bleed more slowly and watch for more. This should remove any residual air without creating any more.

How to bleed motorcycle rear brake with compressor?

If you do not have a good bleed system handy but are still looking for a way to do it quickly, you can use a motorcycle compressor. Compressors are small, handheld devices — some even fit in a briefcase! They work by forcing air into the brake fluid lines from the outside, forcing the air and brake fluid through the system. They are typically only used for motorcycle brake bleeding and are not safe for other hydraulic systems.

How to bleed motorcycle front brake with a vacuum pump?

Using a floor-mounted motorcycle shop vacuum, pull the brake hose towards you until the rubber hose is taut. Connect one end of the hose to the outlet of your vacuum pump and the other end to the bleeder screw on the front brake master cylinder. Start pumping and watch the pressure gauge on your pump slowly rise. When the pressure stops increasing, you've bled your brakes. Repeat this process until all the air is removed from your brake lines.

How to bleed motorcycle rear brakes with a vacuum pump?

The vacuum system on a motorcycle is very complex. Don’t try to bleed the system on your own, because you’re likely to end up with the wrong pressure setting and over- or under-bleeding your brakes. Always call your local dealer to have your motorcycle's vacuum system properly bled.