Yamaha YXR660FAS Service Manual download pdf (Page 299)

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CHAS

FRONT WHEELS AND BRAKE DISCS

CHECKING THE FRONT BRAKE DISC

1. Check:

• brake disc

Galling/damage → Replace.

2. Measure:

• brake disc deflection

Out of specification → Check the wheel

runout.

If wheel runout is within the limits, replace

the brake disc.

• brake disc thickness a

Out of specification → Replace.

Brake disc maximum deflection

0.10 mm (0.004 in)

Brake disc minimum thickness

3.0 mm (0.12 in)

INSTALLING THE FRONT WHEEL HUB

1. Install:

• axle nut

NOTE:

• Do not apply oil to the seat of the nut.

• After tightening the nut, stake the collar of

the nut into the notch of the shaft.

New

T

R

.

.

260 Nm (26.0 m · kg, 190 ft · lb)

INSTALLING THE FRONT WHEEL

1. Install:

• wheel

NOTE:

The arrow mark 1 on the tire must point in the

direction of rotation È of the wheel.

2. Tighten:

• wheel nuts 1

WARNING

Tapered wheel nuts

1

are used for both the

front and rear wheels. Install each nut with

its tapered side towards the wheel.

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