Mercury MERCRUISER - Page 165

Cylinder Head and Rocker Cover Components
Ref. No. Qty. Description
Torque
Nm lb‑in. lb‑ft
1 2 Rocker cover
2 4 Grommet
3 2 Grommet
4 8 Rocker cover screw 15 132.7 –
5 2 Rocker cover seal
6 16 Rocker arm bolts
First 30 – 22.1
Second Rotate engine 360°
Final torque 30 – 22.1
7 16 Rocker arm
8 2 Rocker arm support
9 2 Cylinder head
10 8 Exhaust valve
11 8 Intake valve
12 8 Valve seat—not serviced
13 8 Valve seat—not serviced
14 16 Valve seal
15 16 Spring
16 16 Retainer
17 32 Keeper
18 2 Expansion plug
19 18 Head bolt (M10 x 1.5 x 49)
First 15 132.7 –
Second 30 – 22.1
Final torque +45°
20 16 Head bolt (M10 x 1.5 x 86)
First 15 132.7 –
Second 30 – 22.1
Final torque +45°
21 4 Dowel pin
22 2 Head gasket
23 7 Screw 57 – 42
24 1 Starboard rear—lifting eye bracket
25 1 Starboard front—lifting eye bracket
26 1 Elbow, 90°
27 2 Clamp
28 1 Hose
29 1 PCV valve
30 1 Hose
31 16 Pushrod
Engine Disassembly
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 3A-9