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Mercury MERCRUISER Service Manual

Mercury MERCRUISER
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Kent-Moore
28635 Mound Road
Warren, MI 48092-3499
1-800-345-2233
Description Part Number
Valve spring compressor (cylinder head on the engine) J5892‑D
Valve spring compressor (cylinder head off the engine) J8062
Valve spring compressor (for testing) J9666
Carbon removing brush J8089
Piston ring groove cleaner J3936‑O3
Piston ring compressor J8037
Cam bearing remover and installer J6098‑O1
Cam bearing remover and installer adapter J6098‑10
Harmonic damper remover and installer J23523‑F
Front cover seal installer J35468
Crankshaft sprocket puller J5825‑A
Spark plug port adapter J23590
Main bearing shell remover J8080
Rear main seal installer (modifications needed) J35621‑B
Fuel line disconnect tool J44581
Bushing/bearing remover (modifications needed) J26941
Precautions
!
WARNING
Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or
death due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the
battery before maintaining, servicing, installing, or removing engine or drive components.
!
WARNING
Fuel is flammable and explosive. Ensure that the key switch is off and the lanyard is positioned so that the engine cannot
start. Do not smoke or allow sources of spark or open flame in the area while servicing. Keep the work area well ventilated
and avoid prolonged exposure to vapors. Always check for leaks before attempting to start the engine, and wipe up any
spilled fuel immediately.
!
CAUTION
Using compressed air can cause serious injury. Always wear eye protection when working with compressed air to prevent
injury from ruptured hoses or flying debris.
NOTICE
Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil,
coolant, or other fluids into the environment when using or servicing your boat. Be aware of the local restrictions governing
the disposal or recycling of waste, and contain and dispose of fluids as required.
NOTICE
Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide
a sufficient supply of water to the water inlets during operation.
Engine Disassembly
Page 3A-4 Ā© 2016 Mercury Marine 90-8M0099748 eng DECEMBER 2015

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Mercury MERCRUISER Specifications

General IconGeneral
Number of Cylinders4, 6, 8
Engine TypeInboard/Outboard (Sterndrive)
Fuel TypeGasoline
AspirationNaturally Aspirated
Cooling SystemWater Cooled
WeightVaries by model
Cylinder ConfigurationInline
Displacement Range3.0L-8.2L

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