Yamaha 8D User Manual

General information
2
EMU25360
Safety information
●
Before mounting or operating the outboard
motor, read this entire manual. Reading it
should give you an understanding of the
motor and its operation
●
Before operating the boat, read any own-
er’s or operator’s manuals supplied with it
and all labels. Be sure you understand
each item before operating.
● Do not overpower the boat with this out-
board motor. Overpowering the boat could
result in loss of control. The rated power of
the outboard should be equal to or less
than the rated horsepower capacity of the
boat. If the rated horsepower capacity of
the boat is unknown, consult the dealer or
boat manufacturer.
●
Do not modify the outboard. Modifications
could make the motor unfit or unsafe to
use.
●
Never operate after drinking alcohol or tak-
ing drugs. About 50% of all boating fatali-
ties involve intoxication.
●
Have an approved personal flotation de-
vice (PFD) on board for every occupant. It
is a good idea to wear a PFD whenever
boating. At a minimum, children and non-
swimmers should always wear PFDs, and
everyone should wear PFDs when there
are potentially hazardous boating condi-
tions.
●
Gasoline is highly flammable, and its va-
pors are flammable and explosive. Handle
and store gasoline carefully. Make sure
there are no gas fumes or leaking fuel be-
fore starting the engine.
● This product emits exhaust gases which
contain carbon monoxide, a colorless,
odorless gas which may cause brain dam-
age or death when inhaled. Symptoms in-
clude nausea, dizziness, and drowsiness.
Keep cockpit and cabin areas well ventilat-
ed. Avoid blocking exhaust outlets.
●
Check throttle, shift, and steering for prop-
er operation before starting the engine.
● Attach the engine stop switch lanyard cord
to a secure place on your clothing, or your
arm or leg while operating. If you acciden-
tally leave the helm, the cord will pull from
the switch, stopping the engine.
●
Know the marine laws and regulations
where you will be boating—and obey
them. For basic boating rules, see “Rules
of the road” on page 4.
● Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating in hazardous weather.
● Tell someone where you are going: leave
1. Manufactured date label location
1
ZMU02838
Manufactured:
ZMU04346

Yamaha 8D Specifications

General

Brand	Yamaha
Model	8D
Category	Outboard Motor
Language	English

Summary

Owner's Manual

General Information

Safety Information

Provides essential safety guidelines for operating the outboard motor and boat.

Basic Boating Rules

Explains waterway rules and right-of-way for safe navigation.

Fueling Instructions

Critical warnings about handling and using gasoline due to its flammability and explosive nature.

Basic Components

Throttle and Engine Stop Controls

Covers throttle indicator, friction adjuster, and engine stop lanyard switch.

Engine Starting Controls

Details engine stop button, choke, manual starter, and steering adjuster.

Operation

Installation and Mounting

Guides on proper installation and mounting height of the outboard motor.

Clamping the Outboard Motor

Instructions on securely clamping the outboard motor to the boat's transom.

Engine Break-in and Fuel Mixing

Outlines engine break-in and correct gasoline/oil mixing ratios.

Preoperation Checks and Fueling

Lists essential checks before starting and safe fueling procedures.

Operating the Engine Safely

Safety guidelines for operating the engine, especially regarding fuel and exhaust.

Starting the Outboard Motor

Step-by-step instructions for starting the engine using the manual start method.

Warming Up the Engine

Shifting Gears

Stopping the Engine

Trimming the Outboard Motor

Explains how trim angle affects boat performance and fuel economy.

Tilting the Outboard Motor

Shallow Water Operation

Maintenance

Engine Flushing and Preparation

Spark Plug Maintenance

Fuel System Checks

Spark Plug and Fuel System Checks

Propeller Removal and Installation

Step-by-step guides for removing and installing the propeller assembly.

Trouble Recovery

Troubleshooting Common Issues

Provides a guide to diagnosing and resolving common problems with the outboard motor.

Troubleshooting Engine Performance

Troubleshooting Power and Systems

Troubleshooting Vibration and Emergencies

Emergency Starting and Submerged Motor

Covers emergency starting procedures and actions for submerged motors.

Consumer Information

U.S.A. and Canada Warranty Info

Details warranty coverage and procedures for owners in the USA and Canada.

Yamaha Outboard Limited Warranty

Explains warranty duration, covered components, registration, and repair processes.