Powerhead
Section
4B - Cylinder Head
Table of Contents
Cylinder Head Specifications............................................. 4B-2
Cylinder Head Components
...............................................4B-4
Intake/Exhaust Valve Components....................................4B-6
Camshaft and Oil Pump Components............................... 4B-8
Valve Adjustments........................................................... 4B-10
Cylinder Head Removal................................................... 4B-11
Cylinder Head Disassembly.............................................4B-13
Cleaning and Inspection.................................................. 4B-15
Camshaft.................................................................. 4B-15
Valves....................................................................... 4B-15
Valve Springs............................................................4B-16
Cylinder Head Resurfacing.......................................4B-16
Valve Guides............................................................ 4B-17
Rocker Arm and Rocker Arm Shaft Inspection......... 4B-17
Valve Seat Reconditioning........................................4B-17
Cylinder Head Assembly..................................................4B-19
Cylinder Head Installation................................................ 4B-21
Cylinder Head
90-8M0125265 eng NOVEMBER 2017 © 2018 Mercury Marine Page 4B-1
4
B
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