7. Tighten the oil pan screws in sequence (1–14) to the specified torque.
Description Nm lb‑in. lb‑ft
Oil pan screws 35 – 25.8
8. Tighten the oil drain plug to the specified torque.
Description
Nm lb‑in. lb‑ft
Oil drain plug 24 – 17.7
9. Install the appropriate engine oil dipstick.
a - Dipstick
b - Dipstick tube
c - Clamp
Cylinder Head
Core Plug Installation
The cylinder head assembly is unidirectional and needs a core plug installed in the aft end of the cylinder head. This is
determined on what side of the engine it is installed on.
1. Apply Loctite 242 Threadlocker sealant to the outside diameter of the new engine head core expansion plug.
Engine Inspection and Assembly
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 3B-43