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BRAKE BLEEDING INSTRUCTIONS CONT.
5. Empty the jar, check for any dirt or debris before replacing the lid on the jar. Be
cautious, master cylinders on motorcycles don't hold much, add fluid if needed.
6. Reopen fitting and continue until all air is extracted.
7. When complete, continuing to draw vacuum, tighten bleeder fitting.
8. Top off front reservoir and reinstall cover. Pump lever several times, pedal should have
a positive, solid feel. If not, inspect line to ensure all fittings are tight. If brake still feels
slack, repeat bleeding process.
9. If there is still an issue contact a professional technician for the make and model of the bike.
10.When equipped with dual disc front brakes, repeat bleeding process as though
there are two separate systems following steps from above.
MOTORCYCLE BLEEDING PREPARATION - REAR
Bleeding air from the rear brake system follows the same procedure as the front. The rear
reservoir is usually located under a side cover, with a hose leading to the rear master
cylinder.
• The brake caliper piston must not be seized. The pistons must be free to move within
the calipers.
• The master cylinder piston must not be seized. Piston must return to end of its stroke
when released.
• Inspect brake lines for cracks or wear, and that all fittings are tight.
• Cover any painted surface near the brake master cylinder with plastic sheeting.
• Pump the rear brake pedal to insure the rear brake pads is seated against the rotor.
• Remove the cap from the rear master cylinder reservoir, fill reservoir if needed. Pay
attention to the full indicator mark on the outside of the reservoir, do not over fill.
MOTORCYCLE REAR BRAKE BLEEDING PROCEDURE
1. Place the wrench on the brake bleeding fitting on the rear wheel. Select and press the
adapter over the top of the fitting.
2. Pump the rear brake pedal several times, open fitting slightly watching for clean brake
fluid and fewer bubbles. It only takes about a 1/4 turn for fluid to flow into the jar.
3. Be cautious not to over fill the vacuum pump reservoir jar. Again, avoid fluid reaching
the vacuum pump.
4. Extract about 3 oz. into the jar, close the fitting.
WARNING: NEVER remove the jar lid before releasing the vacuum in the vacuum pump.
5. Empty the jar, check for dirt, and replace the lid. Remember, motorcycles master
cylinders don't hold much, add fluid if needed.
6. Reopen fitting and continue until all air is extracted.
7. When caliper is complete, continuing to draw vacuum, tighten bleeder fitting.
8. Top off front reservoir and reinstall cover. Pump brake pedal several times, pedal
should have a positive, solid feel. If not, inspect line to ensure all fittings are tight. If
brake still feels slack, repeat bleeding process.
9. If there is still an issue contact a professional technician for the make and model of
the bike.
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