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Mercury 4.5L

Mercury 4.5L
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Welcome
You have selected one of the finest marine power packages available. It incorporates numerous design features to
ensure operating ease and durability.
With proper care and maintenance, you will enjoy using this product for many boating seasons. To ensure maximum
performance and carefree use, we ask that you thoroughly read this manual.
The Operation and Maintenance Manual contains specific instructions for using and maintaining your product. We
suggest that this manual remain with the product for ready reference whenever you are on the water.
Thank you for purchasing one of our products. We sincerely hope your boating will be pleasant!
Mercury Marine, Fond du Lac, Wisconsin, U.S.A.
Name / function:
John Pfeifer, President,
Mercury Marine
Read This Manual Thoroughly
IMPORTANT: If you do not understand any portion of this manual, contact your dealer. Your dealer can also provide a
demonstration of actual starting and operating procedures.
Notice
Throughout this publication, and on your power package, warnings, cautions, and notices, accompanied by the
International Hazard Symbol
!
, may be used to alert the installer and user to special instructions concerning a
particular service or operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully.
These safety alerts alone cannot eliminate the hazards that they signal. Strict compliance with these special instructions
while performing the service, plus common sense operation, are major accident prevention measures.
!
WARNING
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
!
CAUTION
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which, if not avoided, could result in engine or major component failure.
IMPORTANT: Identifies information essential to the successful completion of the task.
NOTE: Indicates information that helps in the understanding of a particular step or action.
IMPORTANT: The operator (driver) is responsible for the correct and safe operation of the boat, the equipment aboard,
and the safety of all occupants aboard. We strongly recommend that the operator read this Operation and Maintenance
Manual and thoroughly understand the operational instructions for the power package and all related accessories before
the boat is used.
!
WARNING
The engine exhaust from this product contains chemicals known to the state of California to cause cancer, birth
defects or other reproductive harm.
The serial numbers are the manufacturer’s keys to numerous engineering details that apply to your Mercury Marine
power package. When contacting Mercury Marine about service, always specify model and serial numbers.
Descriptions and specifications contained herein were in effect at the time this was approved for printing. Mercury
Marine, whose policies are based on continuous improvement, reserves the right to discontinue models at any time or to
change specifications or designs without notice and without incurring obligation.
© 2017 Mercury Marine
4.5L, 6.2L MPI
8M0128973 517 eng

Table of Contents

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Mercury 4.5L Specifications

General IconGeneral
Fuel SystemSequential Multi-Port Electronic Fuel Injection (MPI)
Horsepower200 / 220 / 250 hp
TorqueNot available
Fuel TypeGasoline
Displacement4.5L
ConfigurationV

Summary

Welcome and Introduction

Read This Manual Thoroughly

Essential to understand manual for safe operation and maintenance.

Section 1 - Getting to Know Your Power Package

Visual and Audio Warning Systems

Understanding engine alerts and indicators.

Section 2 - On the Water

Safe Boating Recommendations

Guidelines for safe operation and passenger safety.

Carbon Monoxide Exposure

Awareness and prevention of CO poisoning.

Getting Started

Initial engine operation and the 20-hour break-in period.

Section 4 - Maintenance

Section 5 - Storage

Draining the Seawater System

Procedures to prevent freeze and corrosion damage.

Section 6 - Troubleshooting

Troubleshooting Charts

General guide for diagnosing common issues.

Engine Will Not Start or Is Hard to Start

Causes and remedies for starting problems.

Excessive Engine Temperature

Diagnosing and resolving overheating issues.

Low Engine Oil Pressure

Addressing low oil pressure warnings.

Section 8 - Checklists

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