CYLINDER HEAD

ENG

1

2

180˚

Remove the bolts.

Again apply the molybdenum disulfide grease on the threads and contact sur- faces of the bolts and on both contact sur- faces 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.

 

Bolts (cylinder head):

.

2nd:

T

20 Nm (2.0 m • kg, 14 ft • lb)

R

.

 

 

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.

 

Bolts (cylinder head):

.

Final:

T

Specified angle 180˚

R

.

 

 

3.Install:

Nut (cylinder head) 1

T .

R .

10 Nm (1.0 m · kg, 7.2 ft · lb)

4. Install:

Copper washer 1 New

Oil delivery pipe 2

Union bolt (M8) 3

T .

R .

18 Nm (1.8 m · kg, 13 ft · lb)

Union bolt (M10) 4

T .

R .

20 Nm (2.0 m · kg, 14 ft · lb)

4 - 32

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Image 155
Yamaha WR45OFR service manual Bolts cylinder head, 2nd, 20 Nm 2.0 m kg, 14 ft lb, Final, Specified angle 180˚