With the valve in rest position and by counter-holding the return spring, push on the rocker arm and check
that the clearance between the rocker arm sliding shoe and the closing shim is the specified one.
If this is not the case, adjust the valve clearance.
Once the specified clearance is reached, remove the temporarily-fitted camshaft, lubricate it with oil and
reposition it on the cylinder head.
Opening rocker arm
Insert rocker arm shaft (7) with the threaded hole on the head external hole: seal (20) must be replaced
upon every reassembly operation and the new one must be duly lubricated.
Position the opening rocker arm (5) and two shims (8) on shaft (7).