Table of Contents

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40C
50C
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-05-44

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Table of Contents
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Summarization of Contents

General Information
Identification Numbers
Details serial and key numbers for identification and record-keeping purposes.
Emission Control Information
Explains the engine's compliance with emission regulations and relevant labels.
Safety Information
Provides critical safety precautions for operating the outboard motor and boat.
Important Labels
Highlights the location and meaning of various warning and information labels on the motor.
Basic Boating Rules
Outlines essential rules of the road for safe navigation and vessel interaction.
Fueling Instructions
Covers safe procedures for refueling the outboard motor with gasoline and oil.
Battery Requirement
Specifies the necessary battery type and specifications for electric start models.
Propeller Selection
Guides on choosing the correct propeller for optimal engine performance and boat handling.
Start-in-Gear Protection
Explains the safety feature preventing engine start in gear.
Basic Components
Main Components
Illustrates and identifies the primary external and internal parts of the outboard motor.
Operations of Controls and Other Functions
Explains the usage and function of various controls, indicators, and auxiliary systems.
Warning System
Details the engine's warning indicators for overheat and low oil level issues.
Operation
Installation
Covers the process of properly mounting the outboard motor onto the boat's transom.
Filling Fuel and Engine Oil
Details the procedures for adding gasoline and engine oil to the outboard motor.
Pre-Operation Checks
Outlines essential checks to perform before operating the engine for safety and reliability.
Breaking In Engine
Provides instructions for the engine's initial break-in period to ensure longevity and performance.
Starting Engine
Explains the step-by-step process for starting the outboard motor using various methods.
Warming Up Engine
Describes how to warm up the engine to ensure proper operation and prevent damage.
Shifting
Explains how to change between forward, neutral, and reverse gears safely.
Stopping Engine
Details the correct procedure for shutting down the outboard motor safely.
Trimming Outboard Motor
Covers adjusting the motor's angle for optimal boat performance, efficiency, and handling.
Tilting Up/Down
Explains how to tilt the motor up or down for protection, storage, and maintenance.
Cruising in Other Conditions
Discusses operational considerations for cruising in specific conditions like salt or turbid water.
Maintenance
Specifications
Provides detailed technical data and specifications for the outboard motor models.
Transporting and Storing Outboard Motor
Details safe procedures for trailering and long-term storage of the outboard motor.
Periodic Maintenance
Outlines the recommended schedule and types of maintenance tasks for ensuring engine reliability.
Trouble Recovery
Troubleshooting
Provides a chart of common engine problems, their possible causes, and recommended remedies.
Temporary Action in Emergency
Offers immediate steps for dealing with specific emergency situations like impact damage or system failure.
Important Warranty Information
Outboard Motor Two Year Limited Warranty
Details the terms, coverage, and exclusions of the limited warranty for outboard motors.
Warranty Questions and Answers
Addresses common customer queries regarding the warranty policy and responsibilities.
Customer Service
Provides contact information and procedures for obtaining warranty service and support.
Warranty Outside U.S.A. or Canada
Explains warranty coverage and procedures for using the Yamaha motor outside North America.

Table of Contents