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Yamaha 25 User Manual

Yamaha 25
86 pages
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Printed in Japan
April 2009–0.1 × 1 !
Printed on recycled paper
25
OWNER’S MANUAL
6L2-28199-1V
U.S.A.Edition
LIT-18626-08-35
q Read this manual carefully before operating this
outboard motor.
6L2-9-1VHyoshi09.2.59:54ページ1

Table of Contents

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Yamaha 25 Specifications

General IconGeneral
Horsepower25 hp
Cylinders2
Gear Ratio2.08:1
Starting SystemManual or Electric
Shaft Length15 in, 20 in

Summary

Safety Information

Outboard Motor Safety

Essential precautions for safe operation of the outboard motor.

Propeller Safety

Hazards associated with the propeller and how to avoid them.

Rotating Parts Safety

Warnings about entanglements with moving engine parts.

Hot Parts Safety

Caution regarding hot engine components.

Electric Shock Hazard

Warning about potential electrical hazards.

Engine Shut-Off Cord Safety

Importance of the lanyard for operator safety.

Gasoline Safety

Precautions related to flammable gasoline.

Gasoline Exposure and Spills

Handling spills and exposure to gasoline.

Carbon Monoxide Hazard

Risks associated with exhaust gases.

Boating Safety

Personal Flotation Devices (PFDs)

Requirements and recommendations for PFD usage.

People in the Water Safety

Precautions when swimmers are near the boat.

Overloading and Weight Distribution

Risks of exceeding capacity or improper weight balance.

Collision Avoidance

Strategies for preventing collisions.

Basic Boating Rules

Rules for Encountering Vessels

Covers meeting, crossing, and overtaking situations.

Steering Rules and Sound Signals

How to navigate when encountering other vessels.

Installation Requirements

Fuel Requirements

Installation

Outboard Motor Mounting Procedures

General guidance and warnings for mounting the motor.

Clamping the Outboard Motor Securely

Instructions for securely clamping the motor to the transom.

Operation

First-Time Operation and Engine Break-in

Initial steps and break-in procedure for new engines.

Starting the Engine (Manual Tiller Control)

Step-by-step guide for starting models with tiller controls.

Starting the Engine (Electric Start)

Step-by-step guide for starting models with electric start.

Starting the Engine (Remote Control)

Step-by-step guide for starting models with remote controls.

Post-Start Engine Checks

Verifying cooling water flow and engine operation.

Shifting Gears: Neutral to Forward/Reverse

Detailed steps for engaging gears from neutral.

Stopping the Boat Safely

Methods and warnings for stopping the boat.

Stopping the Engine

Procedures for shutting down the engine.

Adjusting Outboard Motor Trim

Explains trim angle and its effect on boat performance.

Pre-Start Engine Checks

Essential checks before starting the engine.

Shifting and Stopping Procedures

How to shift gears and stop the engine safely.

Shallow Water Operation

Maintenance

Trouble Recovery

General Troubleshooting Guide

Common issues and solutions for fuel, compression, and ignition systems.

Troubleshooting Engine Starting Issues

Diagnosing and resolving problems with starting and idling.

Troubleshooting Fuel, Ignition, and System Alerts

Addressing issues with fuel, ignition, oil, and alert systems.

Troubleshooting Performance and Mounting Issues

Resolving problems related to boat load, engine power, and mounting.

Emergency Actions and Fuse Replacement

Immediate steps for emergencies and replacing blown fuses.

Troubleshooting Starter Failure and Emergency Starting

How to start the engine without the electric starter.

Procedure for Submerged Motor

Immediate actions if the motor is submerged.

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