Yamaha WR45OFR service manual Cylinder Head Removal

CYLINDER HEAD

CYLINDER HEAD

CYLINDER HEAD

ENG

Extent of removal:			1 Cylinder head removal
Extent of removal		Order	Part name	Q’ty	Remarks
			CYLINDER HEAD REMOVAL
Preparation for removal			Seat and fuel tank		Refer to “SEAT, FUEL TANK AND SIDE
					COVERS” section.
			Exhaust pipe and silencer		Refer to “EXHAUST PIPE AND
					SILENCER” section.
			Radiator		Refer to “RADIATOR” section.
			Carburetor		Refer to “CARBURETOR” section.
			Camshaft		Refer to “CAMSHAFTS” section.
		1	Oil delivery pipe	1
		2	Nut	2
	1	3*	Bolt (L = 150 mm)	2	Refer to NOTE.
		4*	Bolt (L = 160 mm)	2
		5	Cylinder head	1
		6	Gasket	1
		7	Dowel pin	2
		8	Timing chain guide (front)	1

NOTE:

Tighten the cylinder head bolts to 30 Nm (3.0 m · kg, 22 ft · lb) in the proper tightening sequence, remove and retighten the cylinder head bolts to 20 Nm (2.0 m · kg, 14 ft · lb) in the proper tightening sequence, and then tighten the cylinder head bolts further to reach the specified angle 180˚ in the proper tightening sequence.

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