Yamaha SR125 Service Manual download pdf (Page 154)

6-4

FRONT WHEEL AND BRAKE DISC

CHAS

NOTE:

5. Measure:

 Front wheel runout

Over the specified limits  Replace.

Front wheel runout limits:

Radial

: 2.0 mm

Lateral

: 2.0 mm

6. Inspect:

 Front wheel bearings

Bearings allow free play in the wheel hub or

the wheel does not turn smoothly 

Replace.

 Oil seals

Wear/damage  Replace.

7. Inspect:

 Collar

Grooved wear  Replace the collar and the

oil seal as a set.

YP******

BRAKE DISC INSPECTION

1. Measure:

 Brake disc deflection

Maximum deflection:

0.15 mm

Out of specification  Replace.

2. Measure:

 Brake disc thickness

Brake disc thickness:

4.0 mm

Minimum thickness:

3.5 mm

Out of specification  Replace.

YP******

FRONT WHEEL ASSEMBLY

1. Install:

 Bearing

 Spacer

 Spacer flange

 Bearing

 Oil seal

 Apply the lithium soap base grease on the

bearing and oil seal lip when installing.

 Use a socket that matches the outside diame-

ter of the race of the bearing.

 Always use a new oil seal.

 Install the oil seal with its manufacturer’s

marks or numbers facing outward.

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Ruchira 26 Jul 2025 | 07:58:41

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Yamaha SR125 Service Manual Page 154

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