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Mercury 125 OptiMax User Manual

Mercury 125 OptiMax
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

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Mercury 125 OptiMax Specifications

General IconGeneral
Horsepower125 HP
Cylinders3
Engine Type2-Stroke
StartingElectric
ExhaustThrough prop
Lubrication SystemOil injection
Fuel SystemDirect Fuel Injection (DFI)
Full Throttle RPM5000-5750 rpm
Alternator Output60 Amp
Shaft Length20"
Cooling SystemWater-cooled
Weight180 kg (397 lbs)

Summary

Declaration of Conformity

Description of Engines and Essential Requirements

Details engine types, fuel, and essential requirements for compliance.

Identification of Engines Covered by This Declaration of Conformity

Annex 1.B—Exhaust Emissions

Outlines requirements for exhaust emissions testing and documentation.

Annex 1.C—Noise Emissions

Outlines requirements for noise emissions testing and documentation.

EPA Emissions Regulations

Warranty Message

Mercury Premier Service

Copyright and Trademark Information

WARRANTY INFORMATION

Warranty Registration United States and Canada

Instructions for registering the product for warranty coverage in the US and Canada.

Transfer of Warranty United States and Canada

Procedure for transferring limited warranty coverage to a subsequent owner.

Mercury Jet Products Limited Warranty

Specific warranty terms for Mercury Jet products.

WHAT IS COVERED

Details what the Mercury Jet Products Limited Warranty covers.

3 Year Limited Warranty Against Corrosion

Details the three-year warranty coverage for corrosion issues.

Warranty Coverage and Exclusions

Explains what is covered and not covered under the warranty.

GENERAL EXCLUSIONS FROM WARRANTY

Lists specific items and conditions excluded from general warranty coverage.

U.S. EPA Emissions Limited Warranty

Outlines the limited warranty for emission control systems per EPA regulations.

Emission Control System Components

Lists components covered under the emission-related warranty.

California Emissions Limited Warranty

Details warranty for emission control systems specific to California regulations.

Emission Certification Star Label

Describes the meaning of different emission certification star labels.

Warranty Policy—Australia and New Zealand

Outlines the limited warranty policy for Australia and New Zealand.

Global Warranty Charts Outboard and Jets

Provides warranty coverage charts for various regions and product types.

UNITED STATES WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage details for US models of outboards and jet drives.

CANADA WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage details for Canadian models of outboards and jet drives.

Racing Product (Recreation use only)

Specific warranty terms for racing products used recreationally.

AUSTRALIA AND NEW ZEALAND WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage for outboards and jet drives in Australia and NZ.

SOUTH PACIFIC WARRANTY CHART–OUTBOARD AND JET

Warranty coverage for outboards and jet drives in the South Pacific.

ASIA WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage for outboards and jet drives in Asian regions.

EUROPE AND THE CONFEDERATION OF INDEPENDENT STATES (CIS) WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage for outboards and jet drives in Europe and CIS.

MIDDLE-EAST AND AFRICA (EXCLUDING SOUTH AFRICA) WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage for outboards and jet drives in the Middle East and Africa.

SOUTH AFRICA WARRANTY CHARTS–OUTBOARD AND JET

Warranty coverage for outboards and jet drives in South Africa.

DURATION OF COVERAGE

Specifies the duration of warranty coverage from sale or service date.

CONDITIONS THAT MUST BE MET IN ORDER TO OBTAIN WARRANTY COVERAGE

Outlines prerequisites for obtaining warranty service.

HOW TO OBTAIN WARRANTY COVERAGE

Steps a customer must take to initiate a warranty claim.

WHAT IS NOT COVERED

Lists items and conditions explicitly excluded from warranty coverage.

DISCLAIMERS AND LIMITATIONS

Details disclaimers on implied warranties and limitations on damages.

General Information

Boater's Responsibilities

Outlines the operator's duties for safe boat operation and manual understanding.

Before Operating Your Outboard

Advises careful reading of the manual and contacting dealer for questions.

Boat Horsepower Capacity

Warns against exceeding the boat's maximum horsepower rating.

High‑Speed and High‑Performance Boat Operation

Recommends orientation for unfamiliar high-speed boats.

Propeller Selection

Discusses the importance of choosing the correct propeller for performance.

Outboard Remote Control Models

Mentions remote control features and the need for start-in-neutral protection.

Remote Steering Notice

Advises on proper fasteners for steering link rods to prevent disengagement.

Lanyard Stop Switch

Explains the function of the lanyard stop switch for safety.

Protecting People in the Water

Advises caution and slowing down when people are in the water.

Passenger Safety Message ‑ Pontoon Boats and Deck Boats

Safety advice for passengers on pontoon and deck boats.

Wave and Wake Jumping

Warns about hazards associated with jumping waves or wakes.

Impact with Underwater Hazards

Advises caution and speed control in areas with potential underwater obstacles.

Exhaust Emissions

Alerts to the dangers of carbon monoxide poisoning from exhaust fumes.

Selecting Accessories for Your Outboard

Recommends genuine accessories and checking compatibility before installation.

Safe Boating Recommendations

Provides general advice on boating safety, regulations, and checks.

Recording Serial Number

Importance of recording the outboard's serial number for reference.

Specifications

Provides technical specifications for the outboard models.

80 Jet OptiMax Specifications

Provides technical specifications specific to the 80 Jet OptiMax model.

Component Identification

Illustrates and labels key external components of the outboard.

Emission Certification Star Label

Describes the meaning of different emission certification star labels.

Transporting

Trailering Boat/Outboard

Instructions for safely trailering a boat with the outboard installed.

Fuel and Oil

Fuel Recommendations

Guidelines on selecting and using the correct type of gasoline for the engine.

Fuel Requirements

Specifies fuel types and conditions, avoiding premixed gas and oil.

Fuel Additives

Recommends using fuel stabilizers and cleaners for engine maintenance.

Avoiding Fuel Flow Restriction

Important considerations for fuel system components to prevent flow issues.

Low Permeation Fuel Hose Requirement

Details EPA requirements for low permeation fuel hoses on US models.

Features and Controls

Remote Control Features

Describes the functions and operations of Mercury Precision/Quicksilver remote controls.

Warning System

Explains the different types of warning horns for engine status.

Operation

Important Information

General operational notes and daily inspection reminders before use.

Prestarting Check List

A list of checks to perform before starting the engine.

Operating in Freezing Temperatures

Precautions for operating the outboard in freezing conditions.

Operating in Saltwater or Polluted Water

Recommendations for flushing the outboard after use in saltwater.

Operating at High Elevations

Notes on engine compensation for high elevation changes.

Setting Trim Angle While Running Engine at Idle Speed

Guidance on trim angle to avoid exhaust restrictions at idle.

Engine Break‑in

Critical procedures and suggestions for the engine's initial break-in period.

Starting the Engine

Step-by-step instructions for starting the engine safely.

Gear Shifting

How to properly shift gears using the outboard's control.

Stopping the Engine

Procedure for safely shutting down the engine.

Jet Drive Operation

Specific operational guidance for jet drive models.

Maintenance

Outboard Care

Importance of periodic inspections and maintenance for optimal condition and safety.

Selecting Replacement Parts for Your Outboard

Recommends using genuine Mercury/Quicksilver parts and lubricants.

EPA Emissions Regulations

Certification details for EPA emissions compliance.

Inspection and Maintenance Schedule

Detailed schedule for routine maintenance tasks before, during, and after use.

Storage

Procedures for preparing the outboard for out-of-season or prolonged storage.

Owner Service Assistance

Local Repair Service

Advises returning to authorized dealers for factory-trained service.

Service Away from Home

How to find service when away from your local dealer.

Parts and Accessories Inquiries

Where to direct inquiries for parts and accessories.

Service Assistance

General assistance procedures for service needs.

Troubleshooting

Starter Motor Will Not Crank the Engine

Lists common causes and checks for engine not cranking.

Engine Will Not Start

Identifies potential issues when the engine fails to start.

Engine Runs Erratically

Possible causes for inconsistent engine operation.

Performance Loss

Reasons for reduced engine performance.

Battery Will Not Hold Charge

Troubleshooting steps for a battery that does not retain charge.

Jet Application Troubleshooting

Specific troubleshooting for jet drive applications.

Outboard Installation

Mercury Marine Validated Engine Mounting Hardware

Information on using Mercury-approved fasteners for secure mounting.

Accessories Mounted to the Transom Clamp Bracket

Guidelines on mounting accessories without compromising engine security.

Important Information

General notes regarding outboard installation complexity.

Boat Horsepower Capacity

Warning about exceeding the boat's maximum horsepower rating.

Start in Gear Protection

Safety feature preventing engine start when in gear.

Fuel System

Guidance on fuel system setup and maintenance.

Avoiding Fuel Flow Restriction

Important considerations for fuel system components to prevent flow issues.

Electric Fuel Pump

Details on electric fuel pump pressure limits and regulators.

Low Permeation Fuel Hose Requirement

Details EPA requirements for low permeation fuel hoses on US models.

Maintenance Log

Maintenance Log

A table for recording performed maintenance and engine hours.

WARRANTY INFORMATION

DURATION OF COVERAGE

Specifies the duration of warranty coverage from sale or service date.

CONDITIONS THAT MUST BE MET IN ORDER TO OBTAIN WARRANTY COVERAGE

Outlines prerequisites for obtaining warranty service.

HOW TO OBTAIN WARRANTY COVERAGE

Steps a customer must take to initiate a warranty claim.

WHAT IS NOT COVERED

Lists items and conditions explicitly excluded from warranty coverage.

DISCLAIMERS AND LIMITATIONS

Details disclaimers on implied warranties and limitations on damages.

GENERAL INFORMATION

Emission Certification Star Label

Describes the meaning of different emission certification star labels.

Fuel and Oil

Fuel Recommendations

Guidelines on selecting and using the correct type of gasoline for the engine.

Fuel Requirements

Specifies fuel types and conditions, avoiding premixed gas and oil.

Fuel Additives

Recommends using fuel stabilizers and cleaners for engine maintenance.

Avoiding Fuel Flow Restriction

Important considerations for fuel system components to prevent flow issues.

Low Permeation Fuel Hose Requirement

Details EPA requirements for low permeation fuel hoses on US models.

Features and Controls

Remote Control Features

Describes the functions and operations of Mercury Precision/Quicksilver remote controls.

Warning System

Explains the different types of warning horns for engine status.

Operation

Important Information

General operational notes and daily inspection reminders before use.

Prestarting Check List

A list of checks to perform before starting the engine.

Operating in Freezing Temperatures

Precautions for operating the outboard in freezing conditions.

Operating in Saltwater or Polluted Water

Recommendations for flushing the outboard after use in saltwater.

Operating at High Elevations

Notes on engine compensation for high elevation changes.

Setting Trim Angle While Running Engine at Idle Speed

Guidance on trim angle to avoid exhaust restrictions at idle.

Engine Break‑in

Critical procedures and suggestions for the engine's initial break-in period.

Starting the Engine

Step-by-step instructions for starting the engine safely.

Gear Shifting

How to properly shift gears using the outboard's control.

Stopping the Engine

Procedure for safely shutting down the engine.

Jet Drive Operation

Specific operational guidance for jet drive models.

Maintenance

Outboard Care

Importance of periodic inspections and maintenance for optimal condition and safety.

Selecting Replacement Parts for Your Outboard

Recommends using genuine Mercury/Quicksilver parts and lubricants.

EPA Emissions Regulations

Certification details for EPA emissions compliance.

Inspection and Maintenance Schedule

Detailed schedule for routine maintenance tasks before, during, and after use.

Storage

Procedures for preparing the outboard for out-of-season or prolonged storage.

Owner Service Assistance

Local Repair Service

Advises returning to authorized dealers for factory-trained service.

Service Away from Home

How to find service when away from your local dealer.

Parts and Accessories Inquiries

Where to direct inquiries for parts and accessories.

Service Assistance

General assistance procedures for service needs.

Troubleshooting

Starter Motor Will Not Crank the Engine

Lists common causes and checks for engine not cranking.

Engine Will Not Start

Identifies potential issues when the engine fails to start.

Engine Runs Erratically

Possible causes for inconsistent engine operation.

Performance Loss

Reasons for reduced engine performance.

Battery Will Not Hold Charge

Troubleshooting steps for a battery that does not retain charge.

Jet Application Troubleshooting

Specific troubleshooting for jet drive applications.

Outboard Installation

Mercury Marine Validated Engine Mounting Hardware

Information on using Mercury-approved fasteners for secure mounting.

Accessories Mounted to the Transom Clamp Bracket

Guidelines on mounting accessories without compromising engine security.

Important Information

General notes regarding outboard installation complexity.

Boat Horsepower Capacity

Warning about exceeding the boat's maximum horsepower rating.

Start in Gear Protection

Safety feature preventing engine start when in gear.

Fuel System

Guidance on fuel system setup and maintenance.

Avoiding Fuel Flow Restriction

Important considerations for fuel system components to prevent flow issues.

Electric Fuel Pump

Details on electric fuel pump pressure limits and regulators.

Low Permeation Fuel Hose Requirement

Details EPA requirements for low permeation fuel hoses on US models.

Maintenance Log

Maintenance Log

A table for recording performed maintenance and engine hours.

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