Remove the oil level gauge (A).
Remove the intake manifold.
(Refer to Intake And Exhaust System - "Intake Manifold")
Remove the oil level pipe (A).
Tightening torque:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.716 lb-ft)
Install in the reverse order of removal.
Apply engine oil on the o-ring of the pipe before assembly.