Maintenance Procedure

• Check that the brake fluid level in the rear brake reservoir [A] is above the lower level [B].

• If the fluid level is lower than the lower level line, remove the fuel tank and fill the reservoir to the upper level line [C],

A warning

Change the brake fluid in the brake line completely if the brake fluid must be refilled but the type and brand of the brake fluid that is already in the reser- voir are unidentified. After changing the fluid, use only the same type and brand of fluid thereafter. ^{* •}

Recommended Disc Brake Fluid Grade: DOT4

Brake Fluid Change

NOTE

o The procedure to change the front brake fluid is as fol­lows. Changing the rear brake fluid is the same as for the front brake.

• Level the brake fluid reservoir.

• Remove the reservoir cap.

• Remove the rubber cap from the bleed valve [A] on the caliper.

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PERIODIC MAINTENANCE 2-37

• Change the brake fluid.

• Follow the procedure below to install the front/rear brake

• Tighten:

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Maintenance Procedure

Bleeding the Brake Line

The brake fluid has a very low compression coefficient so that almost all the movement of the brake lever or pedal is transmitted directly to the caliper for braking action. Air, however, is easily compressed. When air enters the brake lines, brake lever or pedal movement will be partially used in compressing the air. This will make the lever or pedal feel spongy, and there will be a loss in braking power.

A warning

Be sure to bleed the air from the brake line when­ever brake lever or pedal action feels soft or spongy after the brake fluid is changed, or when­ever a brake line fitting has been loosened for any reason. ^•

NOTE

o The procedure to bleed the front brake line is as follows. Bleeding the rear brake line is the same as for the front brake.

• Remove the reservoir cap, and fill the reservoir with fresh brake fluid to the upper level line in the reservoir.

• With the reservoir cap off, slowly pump the brake lever several times until no air bubbles can be seen rising up through the fluid from the holes at the bottom of the reser­voir.

O Bleed the air completely from the master cylinder by this operation.

• Install the reservoir cap.

• Remove the rubber cap from the bleed valve on the caliper.

• Attach a clear plastic hose to the bleed valve, and run the other end of the hose into a container.

• Bleed the brake line and the caliper.

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NOTE

O The fluid level must be checked often during the bleed- ing operation and replenished with fresh brake fluid as necessary. If the fluid in the reservoir runs completely out any time during bleeding, the bleeding operation must be done over again from the beginning since air will have entered the line.

o Tap the brake hose lightly from the caliper to the reser- voir for more complete bleeding.

O Front Brake: Repeat the above steps for the other caliper.

• Remove the clear plastic hose.

• Follow the procedure below to install the front/rear brake fluid reservoir cap correctly.

O First, tighten the front/rear brake fluid reservoir cap [B] clockwise [C] by hand until the resistance is felt fully; then, tighten the cap an additional 1/6 turn [D] while holding the brake fluid reservoir [A] body.

• Tighten:

Torque - Front Reservoir Cap Stopper Screw: 1.5 N-m (0.15 kgf-m, 13 in-lb)

• Tighten the bleed valve, and install the rubber cap. Torque - Bleed Valve: 7.8 N-m (0.80 kgf-m, 69 in-lb)

• Check the fluid level.

• After bleeding is done, check the brake for good braking power, no brake drag, and no fluid leakage.

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