Remove the cam chain.

Remove the rocker arm assembly.

Hold the camshaft with an open-end wrench, then loosen the bolt.

Remove the camshaft sprocket.

Install the camshaft sprocket.

Apply new engine oil to the threads of the camshaft sprocket mounting bolt, and install it. Hold the camshaft with an open-end wrench, then tighten the bolt.

Specified Torque

10 x 1.25 mm 56 N·m (5.7 kgf·m, 41 lbf·ft)

Install the rocker arm assembly.

Install the cam chain.