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Yamaha VF90 User Manual

Yamaha VF90
212 pages
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Read this manual carefully before operating this
outboard motor.
OWNER’S MANUAL
VF90
LIT-18626-11-95
6HK-28199-30-E0
U6HK30E0.book Page 1 Wednesday, December 13, 2017 5:32 PM
©2019 Yamaha Motor Corporation, U.S.A.

Table of Contents

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Yamaha VF90 Specifications

General IconGeneral
Max Output90 hp
Starting SystemElectric
SteeringRemote
Engine Type4-Stroke
Cylinder ConfigurationInline 4
Fuel Induction SystemElectronic Fuel Injection (EFI)
Shaft Length20 in
Recommended Fuel87 octane or higher

Summary

Safety Information

General Outboard Motor Safety Precautions

Key safety measures for operating the outboard motor.

Specific Hazards: Propeller, Rotating Parts, Hot/Electrical Components

Warnings about propeller, rotating parts, hot components, and electrical hazards.

Power Trim/Tilt and Engine Shut-Off Cord Safety

Safe operation guidelines for trim/tilt and engine shut-off cord.

Fuel, Carbon Monoxide, and Modification Safety

Hazards related to gasoline, carbon monoxide, and unauthorized modifications.

Boating Safety: Alcohol, Drugs, Passengers, Overloading

Essential safety practices for passengers, cargo, and personal conduct.

Collision Avoidance and Defensive Operation

Strategies to prevent collisions and operate defensively.

Basic Boating Rules and Vessel Encounters

Fundamental waterway rules and procedures for meeting other vessels.

Steering, Sailing Rules, and Sound Signals

Rules for right-of-way, signaling, and vessel interaction.

Vessel Crossing, Overtaking, and Channel Navigation Rules

Rules for vessel interactions in various navigation scenarios.

Fishing/Sailing Vessel Right-of-Way and Buoyage Systems

Rules for vessel priority and understanding navigational markers.

Specifications and Requirements

Installation Requirements and Warnings

Guidelines for installation and critical warnings about mounting.

Battery Requirements and Propeller Selection

Detailed battery specifications and guidance on choosing the right propeller.

Start-in-Gear Protection and Engine Oil Requirements

Safety features and engine oil grade recommendations.

Fuel Requirements and Ethanol Precautions

Guidelines for gasoline quality, octane, and safe use of ethanol fuels.

Engine Control System

Alert System Overview and Overheat Alert

Functionality of the alert system and overheat warnings.

Low Oil Pressure Alert and Actions

System for low oil pressure warnings and required actions.

Installation

Installation Overview and Mounting Warnings

General installation advice and critical warnings about mounting.

Mounting Height Considerations

Importance of correct outboard motor mounting height for performance.

Operation

First-Time Operation and Engine Break-In

Initial steps for operating the engine and the break-in period.

Pre-Start Checks and Getting to Know Your Boat

Essential checks before starting and understanding boat handling.

Fuel Level, Fuel System Safety, and Leak Checks

Procedures for checking fuel, fuel system safety, and leaks.

Engine Oil Level Check and Outboard Motor Checks

Procedures for checking engine oil and general motor inspection.

Maintenance

Trouble Recovery

Troubleshooting Overview and Starter Issues

General troubleshooting guide and solutions for starter problems.

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