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Yamaha 9.9 User Manual

Yamaha 9.9
72 pages
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9.9
15
OWNER’S MANUAL
LIT-18626-08-34
63V-28199-1E
U.S.A.Edition
Read this manual carefully before operating this
outboard motor.
DIC183
©2019 Yamaha Motor Corporation, U.S.A.

Table of Contents

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Yamaha 9.9 Specifications

General IconGeneral
Fuel Induction SystemCarburetor
Prop Shaft Horsepower9.9 hp
Starting SystemManual
Shaft Length15 in
SteeringTiller
Fuel Tank CapacityExternal tank
Bore x Stroke50.0 x 43.0 mm (1.97 x 1.69 in.)

Summary

Important Manual Information

To the Owner

Welcome message and explanation of manual conventions for safe operation and understanding.

Safety Information

Outboard Motor Safety

Essential precautions for safe handling and operation of the outboard motor, covering key hazards.

Boating Safety

General safety guidelines and precautions for boating activities, including PFD use and collision avoidance.

Basic Boating Rules

Fundamentals of navigation and vessel interaction, including right-of-way and communication signals.

General Information

Identification Numbers Record

Guidance on recording serial numbers for identification, reference, and ordering parts.

Warning Labels

Information on identifying and understanding various warning labels on the outboard motor for safety.

Specifications and Requirements

Specifications

Detailed technical data, dimensions, performance metrics, and engine characteristics of the outboard motor.

Installation Requirements

Guidelines for correctly installing the outboard motor, including horsepower limits and mounting considerations.

Propeller Selection

Advice on choosing the right propeller to optimize boat performance, speed, and fuel economy.

Fuel Requirements

Information on recommended gasoline types, octane ratings, and the use of gasohol and additives.

Components

Components Diagram

Visual guide identifying and labeling the various parts and features of the outboard motor.

Engine Shut-Off Cord (Lanyard) and Clip

Instructions on proper use and attachment of the safety lanyard to prevent runaway boats.

Manual Starter Handle

Procedure for starting the engine manually using the starter handle, including technique.

Installation

Mounting the Outboard Motor

Guidance on proper mounting height and placement of the outboard motor on the boat's transom.

Clamping the Outboard Motor

Instructions for securely attaching the outboard motor to the boat's transom using clamp screws.

Operation

First-Time Operation

Steps and procedures for initial engine break-in to ensure proper performance and longevity.

Filling Fuel and Engine Oil

Detailed instructions for safely refueling the outboard motor and adding engine oil, including portable tank use.

Operating Engine

Steps for starting and running the outboard motor, including fuel sending and initial checks.

Starting Engine

Procedures for starting the engine, including manual and electric start methods and choke usage.

Checks After Starting Engine

Post-start checks for cooling water flow, engine warm-up, and smooth shifting before operation.

Stop Switches

Instructions on how to properly stop the engine using the stop button or engine shut-off switch.

Trimming Outboard Motor

Guidance on adjusting the outboard motor's trim angle for optimal performance, stability, and fuel economy.

Adjusting Trim Angle for Manual Tilt Models

Specific steps for adjusting the trim angle using the trim rod on manual tilt models.

Tilting Up and Down

Procedures for tilting the outboard motor up or down for protection, storage, or shallow water operation.

Shallow Water

Guidelines for operating the boat in shallow water conditions, including use of the shallow water cruising system.

Maintenance

Transporting and Storing Outboard Motor

Instructions and precautions for safely transporting and storing the outboard motor, including fuel tank handling.

Flushing in a Test Tank

Procedure for flushing the engine's cooling system using fresh water to prevent clogging and corrosion.

Periodic Maintenance

Overview of regular maintenance tasks requiring mechanical skills, recommending dealer service if unsure.

Cleaning and Adjusting Spark Plug

Steps for inspecting, cleaning, and adjusting spark plugs to ensure optimal engine performance.

Checking Propeller

Procedure for inspecting the propeller and propeller shaft for damage, wear, or obstructions.

Removing Propeller

Step-by-step guide on how to safely remove the propeller from the outboard motor.

Installing Propeller

Instructions for correctly installing a new propeller, including torque specifications and cotter pin use.

Changing Gear Oil

Procedure for draining and refilling the gear case with fresh gear oil, including inspection of used oil.

Cleaning Fuel Tank

Instructions for safely cleaning the fuel tank, including precautions for handling gasoline and flammable materials.

Inspecting and Replacing Anode(s)

Guidance on inspecting sacrificial anodes for corrosion protection and replacing them when necessary.

Trouble Recovery

Troubleshooting

A guide to diagnosing and resolving common engine problems, covering starting issues, power loss, and more.

Starter Will Not Operate

Steps to take if the starter mechanism fails, including the use of an emergency starter rope.

Consumer Information

Outboard Motor Two Year Limited Warranty

Details of the limited warranty coverage, terms, conditions, exclusions, and customer responsibilities.

Warranty Questions and Answers

Common questions and answers regarding warranty coverage, maintenance responsibilities, and dealer services.

Customer Service

Information on how to obtain warranty service and contact Yamaha for assistance and support.

Warranty Information Outside USA/Canada

Important considerations for using and obtaining service for the outboard motor in countries outside the USA or Canada.

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