Yamaha WR250F(W) Service Manual download pdf (Page 177)

6-19

FRONT FORK

The bending value is shown by one

half of the dial gauge reading.

Do not attempt to straighten a bent

inner tube as this may dangerous-

ly weaken the tube.

CHECKING THE OUTER TUBE

1. Inspect:

• Outer tube "1"

Score marks/wear/damage

→Re-

place.

CHECKING THE FRONT FORK

CAP BOLT

1. Inspect:

• Front fork cap bolt "1"

• O-ring "2"

• Air bleed screw "3"

Wear/damage

→ Replace.

ASSEMBLING THE FRONT FORK

1. Wash the all parts in a clean sol-

vent.

2. Install:

• Damper rod "1"

To inner tube "2".

To install the damper rod into the

inner tube, hold the inner tube

aslant. If the inner tube is held ver-

tically, the damper rod may fall into

it, damaging the valve inside.

3. Install:

• Copper washer "1"

• O-ring "2"

• Base valve "3"

To inner tube "4".

4. Tighten:

• Base valve "1"

• Use a damper rod holder "2" to lock

the damper rod "3".

• Apply the LOCTITE

®

on the base

valve thread.

5. Install:

• Spring guide "1"

• Locknut "2"

To damper rod "3".

• Install the spring guide with its

smaller dia.end "a" facing down-

ward.

• With its thread "b" facing upward,

fully finger tighten the locknut onto

the damper rod.

6. Install:

• Dust seal "1"

• Stopper ring "2"

• Oil seal "3"

• Oil seal washer "4"

• Slide metal "5"

To inner tube "6".

• Apply the fork oil on the inner tube.

• When installing the oil seal, use vi-

nyl seat "a" with fork oil applied to

protect the oil seal lip.

• Install the oil seal with its manufac-

ture's marks or number facing the

axle holder side.

• Install the oil seal washer with its

projections "b" facing upward.

7. Install:

• Piston metal "1"

Install the piston metal onto the slot

on inner tube.

8. Install:

• Outer tube "1"

To inner tube "2".

Base valve:

55 Nm (5.5 m•kg, 40

ft•lb)

Damper rod holder:

YM-01494/90890-01494

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