1. With the specified air pressure applied, move the intake primary rocker arm (A) for the No. 1 cylinder. The primary rocker arm and secondary rocker arm (B) should move together.
   - If the intake secondary rocker arm does not move, remove the primary and secondary rocker arms as an assembly and check that the pistons in the primary and secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and test.

1. Remove the special tools.

1. Tighten the camshaft holder mounting bolts to 22 N·m (2.2 kgf·m, 16 lbf·ft).

1. Tighten the sealing bolt to 20 N·m (2.0 kgf·m, 14 lbf·ft).

1. Install the cylinder head cover.