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OWNER'S MANUAL
q Read this manual carefully before operating this
outboard motor.
F300
F350
LF300
LF350
U.S.A.Edition
LIT-18626-08-14
6AW-28199-14

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Table of Contents
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Summarization of Contents

Important Manual Information
Manual Guidance and Safety Symbols
Welcome message, how to interpret manual symbols and warnings.
Safety Information
General Motor Safety
Covers propeller, rotating parts, hot parts, electric shock, trim/tilt, shut-off cord, and gasoline safety.
Boating Practices and Environmental Safety
Addresses fuel handling, carbon monoxide, modifications, alcohol, PFDs, passengers, overloading, and weather.
Collision Avoidance and Rules
Strategies for avoiding collisions, accident reporting, training, and basic boating rules.
Navigation and Vessel Interaction
Explains rules for encountering vessels, special situations, and reading navigation markers.
General Information
Identification Numbers Record
Provides space to record outboard motor and digital control serial numbers for reference.
Key Number Identification
Instructions on locating and recording the key number for potential replacement.
Manuals and Labels
Emphasizes reading manuals and labels for safe operation and identifies warning label locations.
Other Labels and Symbols
Illustrates and explains various labels and symbols found on the motor.
Specifications and Requirements
Motor Specifications
Details engine type, displacement, dimensions, performance, and drive unit specifications.
Fluid and Installation Requirements
Covers fuel, oil, lubrication, and installation guidelines like horsepower rating.
Control System and Battery Requirements
Outlines requirements for digital electronic control and battery specifications.
Propeller and Protection Systems
Discusses propeller selection, counter rotation, and start-in-gear protection.
Components
Component Diagrams
Illustrates main external components of the outboard motor.
Control Lever and Switches
Details control levers, free throttle, friction adjuster, station selector, and engine selector switches.
Engine Start and Stop Controls
Explains main switch, starter button, engine stop button, and power trim/tilt switches.
Instrumentation and Alerts
Covers Command Link meters, instruments, alerts, and troubleshooting indicators.
Engine Control System
Alert System Overview
Introduces the alert system and digital electronic control alerts.
Overheat Alert
Explains the overheat alert device and its indicators.
Engine Alerts Explained
Details overheat and low oil pressure alerts for twin/triple engines.
Installation
Proper Motor Mounting
Guidelines for mounting the outboard motor, including height and balance.
Mounting Height and Water Spray
Discusses the effect of mounting height and hazards of water spray on the engine.
Operation
Initial Operation and Checks
Covers first-time operation, break-in, fuel, oil, battery checks, and starting procedures.
Engine Control and Shifting
Details engine selection, starting, shifting, stopping, and station operations.
Boat Direction and Trim Control
Explains how to control boat direction, trim, tilt, and operate in shallow water.
Cruising and Other Conditions
Guidance on tilting, operating in salt/turbid water, and general operation.
Maintenance
Storage, Cleaning, and Lubrication
Covers motor storage, washing, lubrication, flushing, and checking painted surfaces.
Maintenance Schedules and Procedures
Details periodic maintenance, replacement parts, interval guidelines, and maintenance charts.
Component Maintenance
Covers spark plugs, anodes, battery checks, and connections.
Propeller and Gear Oil Maintenance
Details propeller removal/installation, gear oil change, and battery wiring.
Trouble Recovery
Troubleshooting Overview
Introduces troubleshooting steps for common engine problems.
Troubleshooting Specific Issues
Addresses problems like fuel system, ignition, oil, and alerts.
Troubleshooting Power Loss and Vibrations
Covers issues causing power loss, vibrations, and propeller problems.
Emergency Actions and Issues
Procedures for temporary actions in emergencies and handling impact damage.
Consumer Information
Warranty Information for USA and Canada
Details warranty coverage and procedures for owners in the US and Canada.
Three-Year Limited Warranty Statement
Outlines the terms and conditions of the three-year limited warranty for outboard motors.
Warranty Exclusions and Limitations
Lists specific parts excluded from warranty and explains limitations.
Warranty Information Outside USA/Canada
Provides warranty information for users of Yamaha products outside the USA or Canada.

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