Yamaha 50H User Manual (English)

Other manuals for Yamaha 50H

Questions and Answers:

Adam StewartAug 28, 2025

How to fix a Yamaha Outboard Motor when the starter will not operate?

J
johnsontoddAug 28, 2025
If the starter on your Yamaha Outboard Motor won't operate, here are some things to check: * The battery capacity might be weak or low – check the battery condition and use a battery of the recommended capacity. * Battery connections could be loose or corroded – tighten the battery cables and clean the battery terminals. * The fuse for the electric start circuit might be blown – check for the cause of the electric overload and repair it, then replace the fuse with one of the correct amperage. * Make sure the engine stop switch lanyard is attached and the shift lever is in neutral. If these steps don't resolve the issue, the starter components may be faulty, requiring service by a Yamaha dealer.

Horsepower	50 hp
Gear Ratio	2.00:1
Starting System	Electric
Cooling System	Water-cooled
Shaft Length	20 in
Steering	Remote

Horsepower

50 hp

Gear Ratio

2.00:1

Starting System

Electric

Cooling System

Water-cooled

Shaft Length

20 in

Steering

Remote

Summary

Chapter 1 GENERAL INFORMATION

IDENTIFICATION NUMBERS

Record outboard motor and key identification numbers for reference and ordering spare parts.

SAFETY INFORMATION

Essential safety precautions for operating the outboard motor and boat, including warnings and guidelines.

FUELING INSTRUCTIONS

Detailed instructions on safely refueling the outboard motor, emphasizing fire and explosion hazards.

BATTERY REQUIREMENT

Specifications and precautions for selecting and connecting the correct battery for electric start models.

Chapter 2 BASIC COMPONENTS

MAIN COMPONENTS

Diagrams and identification of the main external parts of the outboard motor (40VMHD/50HMHD).

OPERATIONS OF CONTROLS AND OTHER FUNCTIONS

Explanation of the functions of various controls and components like fuel tank, tiller handle, and switches.

Chapter 3 OPERATION

INSTALLATION

Guidelines and warnings for correctly mounting and clamping the outboard motor onto the boat transom.

STARTING ENGINE

Step-by-step procedures for starting the outboard motor, covering manual and electric start models.

SHIFTING

Instructions for engaging forward and reverse gears, including safety precautions before shifting.

TRIMMING OUTBOARD MOTOR

Explanation of how trim angle affects boat performance and stability, with adjustment guidelines.

CRUISING IN SHALLOW WATER

Procedures and precautions for operating the motor in shallow water using the tilt feature.

Chapter 4 MAINTENANCE

SPECIFICATION DATA

Detailed technical specifications for various Yamaha outboard motor models (40VMHD, 40VETO, etc.).

TRANSPORTING AND STORING OUTBOARD MOTOR

Guidelines for safely transporting and storing the outboard motor, including trailering and fuel handling.

PERIODIC MAINTENANCE

Overview of regular maintenance tasks and recommendations for keeping the engine in optimal condition.

MAINTENANCE CHART

A schedule outlining recommended maintenance checks and intervals for various engine components.

GREASING

Instructions and diagrams for applying grease to specific lubrication points on the outboard motor.

CHECKING FUEL SYSTEM

Procedures for inspecting the fuel system for leaks, damage, and proper connections.

CHECKING PROPELLER

Instructions on how to inspect the propeller for wear, damage, and proper installation.

CHECKING BATTERY

Safety precautions and procedures for checking, connecting, and maintaining the battery.

Chapter 5 TROUBLE RECOVERY

TROUBLESHOOTING

A guide to diagnosing and resolving common problems with the engine's starting, running, and performance.

TEMPORARY ACTION IN EMERGENCY

Immediate actions to take in case of impact damage or failure of critical systems like power trim/tilt or starter.

Chapter 6 INDEX

INDEX

Alphabetical listing of topics and their corresponding page numbers for easy reference.

Yamaha 50H User Manual

Table of Contents