Cylinder Head Installation - Honda GL1800 Service Manual

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CYLINDER HEAD/VALVE

Support the cylinder head so the valve heads will

not contact anything and possibly get damaged.

Tap the valve stems gently with two plastic ham-

mers to seat the cotters firmly as shown.

CYLINDER HEAD INSTALLATION

Clean the gasket mating surfaces of the crankcase,

manifold and cylinder head thoroughly, being care-

ful not to damage them.

Set support blocks between the crankcase and

intake manifold to prevent interference the cylinder

head with the manifold.

Install the two dowel pins and a new gasket.

Coat a new O-ring with coolant and install it onto

the water joint pipe.

Install the cylinder head while connecting the joint

Apply engine oil to the threads and seating sur-

faces of the 9-mm cylinder head bolts.

Install the eight 9-mm bolts and three 6-mm bolts,

and tighten them in a crisscross pattern in several

TORQUE: 9 mm bolts: 44 N·m (4.5 kgf·m, 33 lbf·ft)

Install the ECT sensor with a new sealing washer.

Left cylinder head

TORQUE: 25 N·m (2.5 kgf·m, 18 lbf·ft)

CYLINDER HEAD JOINT PIPE