2004 Wr450

Can someone please give me the valve clearances for a 2004 WR450 head and also the cylinder head torque?

Thanks in advance!

Valve clearance (cold):

Intake valve:

0.10 ~ 0.15 mm

(0.0039 ~ 0.0059 in)

Exhaust valve:

0.20 ~ 0.25 mm

(0.0079 ~ 0.0098 in)

The head torque is not that straight forward. Here's the procedure from the manual. I can't post the drawing of the tightening sequence but basically it's left rear, right front, left front, right rear. Done it many times and it works:

Installation steps:

CAUTION:

Tighten the cylinder head using the rotation

angle procedure to obtain uniform

tightening torque.

Wash the threads and contact surfaces of

the bolts, the contact surfaces of the plain

washers, the contact surface of the cylinder

head, and the threads of the crankcase.

Apply the molybdenum disulfide grease on

the threads and contact surfaces of the

bolts and on both contact surfaces of the

plain washers.

Install the plain washers and bolts.

Tighten the bolts to the specified torque in

two or three steps in the proper tightening

sequence as shown.

Torque Bolts (cylinder head):

1st:

30 Nm (3.0 m • kg, 22 ft • lb)

Remove the bolts.

Again apply the molybdenum disulfide

grease on the threads and contact surfaces

of the bolts and on both contact surfaces

of the plain washers.

Retighten the bolts.

NOTE:

Tighten the bolts to the specified torque in

two or three steps in the proper tightening

sequence as shown.

Torque Bolts (cylinder head):

2nd:

20 Nm (2.0 m • kg, 14 ft • lb)

Put a mark on the corner 1 of the bolt

(cylinder head) and the cylinder head 2

as shown.

NOTE:

Tighten the bolts 90° in each of the two

steps to reach the specified angle of 180° in

the proper tightening sequence as shown.

Torque Bolts (cylinder head):

Final:

Specified angle 180°

Valve clearance (cold):

Intake valve:

0.10 ~ 0.15 mm

(0.0039 ~ 0.0059 in)

Exhaust valve:

0.20 ~ 0.25 mm

(0.0079 ~ 0.0098 in)

The head torque is not that straight forward. Here's the procedure from the manual. I can't post the drawing of the tightening sequence but basically it's left rear, right front, left front, right rear. Done it many times and it works:

Installation steps:

CAUTION:

Tighten the cylinder head using the rotation

angle procedure to obtain uniform

tightening torque.

Wash the threads and contact surfaces of

the bolts, the contact surfaces of the plain

washers, the contact surface of the cylinder

head, and the threads of the crankcase.

Apply the molybdenum disulfide grease on

the threads and contact surfaces of the

bolts and on both contact surfaces of the

plain washers.

Install the plain washers and bolts.

Tighten the bolts to the specified torque in

two or three steps in the proper tightening

sequence as shown.

Torque Bolts (cylinder head):

1st:

30 Nm (3.0 m • kg, 22 ft • lb)

Remove the bolts.

Again apply the molybdenum disulfide

grease on the threads and contact surfaces

of the bolts and on both contact surfaces

of the plain washers.

Retighten the bolts.

NOTE:

Tighten the bolts to the specified torque in

two or three steps in the proper tightening

sequence as shown.

Torque Bolts (cylinder head):

2nd:

20 Nm (2.0 m • kg, 14 ft • lb)

Put a mark on the corner 1 of the bolt

(cylinder head) and the cylinder head 2

as shown.

NOTE:

Tighten the bolts 90° in each of the two

steps to reach the specified angle of 180° in

the proper tightening sequence as shown.

Torque Bolts (cylinder head):

Final:

Specified angle 180°

Thanks, Great info!

I needed that also Christine, thanks for asking.

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