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Mercury 75 User Manual

Mercury 75
159 pages
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Outboard
Operation
Maintenance
Warranty
Installation
Manual
© 2014 Mercury Marine
75/90/115/115 Pro XS/125 OptiMax and 80 Jet
8M0100515 1214 eng

Table of Contents

Other manuals for Mercury 75

Questions and Answers:

Mercury 75 Specifications

General IconGeneral
Horsepower75 hp
StartingElectric
Cylinders3
Warranty3 years
Shaft Length20 in. or 25 in.

Summary

General Information

EPA Emissions Regulations

Details on outboard emissions compliance with US Environmental Protection Agency standards.

Boat Horsepower Capacity

Guidance on matching outboard horsepower to boat capacity to prevent damage or injury.

Propeller Selection

How to choose the correct propeller for optimal boat performance and engine operation.

Lanyard Stop Switch

Explains the function and importance of the safety lanyard stop switch for engine shutdown.

Specifications

Technical specifications for different outboard models including horsepower, RPM, and dimensions.

Component Identification

Diagrams and labels identifying key external parts of the outboard engine.

Fuel and Oil Recommendations

Fuel Recommendations

Guidelines on selecting the correct type and octane rating of gasoline for engine operation.

Avoiding Fuel Flow Restriction

Information on components that can restrict fuel flow and potentially damage the engine.

Oil Recommendation

Specifies the recommended type of oil for the outboard engine's lubrication system.

Filling Oil Injection System

Step-by-step instructions for refilling the engine's oil injection system reservoir.

Features and Controls

Power Trim and Tilt

Explanation of the outboard's power trim and tilt system for adjusting operating position.

Power Trim Operation

Details on how to operate the power trim system, including potential control hazards.

Trim Tab Adjustment

Instructions on adjusting trim tabs to compensate for steering torque and improve boat handling.

Operation Procedures

Prestarting Check List

Essential checks to perform before starting the outboard engine for safe operation.

Engine Break-in

Procedures for the initial break-in period to ensure engine longevity and performance.

Starting the Engine

Step-by-step guide for safely starting the outboard engine.

Gear Shifting

Instructions on how to properly shift the outboard between forward, neutral, and reverse gears.

Jet Drive Operation

Specific operating instructions and handling characteristics for jet drive models.

Maintenance Schedule and Procedures

Inspection and Maintenance Schedule

A comprehensive schedule outlining routine inspections and maintenance tasks for the outboard.

Flushing the Cooling System

How to flush the outboard's cooling system with fresh water after use in salt or polluted water.

Fuel System Maintenance

Procedures for inspecting and replacing fuel system components like filters and lines.

Battery Inspection

Guidelines for inspecting the battery to ensure reliable engine starting capability.

Spark Plug Inspection and Replacement

Steps for inspecting, checking the gap, and replacing spark plugs for optimal engine performance.

Gearcase Lubrication

Instructions on how to check, drain, refill, and lubricate the outboard's gearcase.

Owner Service Assistance

Local Repair Service

Advice on returning the outboard to an authorized dealer for factory-trained service.

Resolving a Problem

Steps to take if you encounter an issue with your Mercury product and need assistance.

Troubleshooting Common Issues

Starter Motor Will Not Crank the Engine

Lists possible causes and solutions when the starter motor fails to engage the engine.

Engine Will Not Start

Identifies common reasons why the engine may not start and how to address them.

Engine Runs Erratically

Explains potential causes for inconsistent engine operation and troubleshooting steps.

Performance Loss

Diagnoses and solutions for reduced engine performance, including propeller and load issues.

Jet Application Troubleshooting

Specific troubleshooting for jet drive models, covering performance and overspeed issues.

Outboard Installation Guide

Mercury Marine Validated Engine Mounting Hardware

Information on using Mercury-approved fasteners and following instructions for secure engine mounting.

Determining Recommended Outboard Mounting Height

Guidance on setting the correct mounting height for optimal performance and avoiding issues.

Fastening the Outboard to the Transom

Detailed steps and torque specifications for securely attaching the outboard to the boat transom.

Electrical, Fuel Hose, Flush Hose, and Control Cables

Instructions for routing and connecting various hoses, wiring, and control cables to the engine.

Shift Cable Installation

Procedures for installing and adjusting the shift cable for proper gear engagement.

Oil Injection Set-Up

Steps for filling the oil tank and priming the oil injection pump before initial engine start.

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