Mercury MerCruiser Service Manual page 165

Ref. No. Qty.
1 2 Rocker cover
2 4 Grommet
3 2 Grommet
4 8 Rocker cover screw
5 2 Rocker cover seal
6 16 Rocker arm bolts
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)
20 16 Head bolt (M10 x 1.5 x 86)
21 4 Dowel pin
22 2 Head gasket
23 7 Screw
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
90-8M0099748 eng DECEMBER 2015
Cylinder Head and Rocker Cover Components
Description
First
Second
Final torque
First
Second
Final torque
First
Second
Final torque
© 2016 Mercury Marine
Engine Disassembly
Torque
Nm lb‑in.
15 132.7
30 –
Rotate engine 360°
30 –
15 132.7
30 –
+45°
15 132.7
30 –
+45°
57 –
Page 3A-9
lb‑ft
–
22.1
22.1
–
22.1
–
22.1
42