Yamaha F20B User Manual

Operation
45
rious engine damage could occur.
Check the oil level and add oil if nec-
essary. Consult your Yamaha dealer
if the cause for the low oil pressure-
alert indicator cannot be found.
[ECM01830]
EMU36530
Checks after engine warm-up
EMU36540
Shifting
While tightly moored, and without applying
throttle, confirm that the engine shifts
smoothly into forward and reverse, and back
to neutral.
EMU36980
Stop switches
● Turn the main switch to “”, or press the
engine stop button and make sure the en-
gine stops.
● Confirm that removing the clip from the en-
gine shut-off switch stops the engine.
●
Confirm that the engine cannot be started
with the clip removed from the engine
shut-off switch.
EMU34561
Shifting
WARNING
EWM00180
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
NOTICE
ECM01610
Warm up the engine before shifting into
gear. Until the engine is warm, the idle
speed may be higher than normal. High
idle speed can prevent you from shifting
back to neutral. If this occurs, stop the
engine, shift to neutral, then restart the
engine and allow it to warm up.
To shift out of neutral
1. Pull the neutral interlock trigger up (if
equipped).
2. Move the remote control lever / gear
shift lever firmly and crisply forward (for
forward gear) or backward (for reverse
gear) [about 35° (a detent can felt) for re-
mote control models]. Be sure to check
that the tilt lock lever is in the lock/down
position (if equipped) before operating in
reverse.
1. Neutral interlock trigger
ZMU05541

Yamaha F20B Specifications

General

Brand	Yamaha
Model	F20B
Category	Outboard Motor
Language	English

Summary

Safety Information

Outboard Motor Safety

Essential safety precautions for outboard motor operation.

Fuel and Environmental Safety

Precautions for gasoline, spills, and carbon monoxide.

Collision Avoidance and Weather

Preventing collisions and preparing for weather conditions.

Boating Regulations and Practices

Adhering to laws, training, and safety publications.

General Information

Identification and Labels

Recording serial numbers, key numbers, and understanding labels.

Manuals and Warning Labels

Importance of reading manuals and understanding warning labels.

Specifications and Requirements

Engine Specifications

Key technical details like dimensions, performance, and engine type.

Installation Requirements

Guidelines for installing the outboard motor.

Fuel and Lubrication

Recommended fuel, engine oil, and lubrication details.

Components

Component Overview and Diagrams

Visual identification of major outboard motor parts.

Engine Controls and Operation

How to operate throttle, shift, steering, and tiller controls.

Starting, Safety, and Tilt Systems

Engine stop, starting, tilt mechanisms, and safety cords.

Adjustments and Ancillary Systems

Steering friction, trim tab, flushing, and indicators.

Instruments and Indicators

Indicators

Explanation of low oil pressure and overheat alert indicators.

Engine Control System

Alert System

How overheat and low oil pressure alerts function.

Installation

Installation Overview

General information on outboard motor installation procedures.

Mounting and Clamping

Steps and precautions for securely mounting and clamping the motor.

Operation

First-Time Operation and Break-In

Initial setup, break-in procedures, and pre-start checks.

Engine Starting and Operation

Procedures for starting, warming up, and running the engine.

Shifting, Stopping, and Trimming

How to shift gears, stop the engine, and adjust trim angle.

Maintenance

Transporting and Storage

Safe procedures for transporting and storing the outboard motor.

Routine Checks and Servicing

Inspecting spark plugs, filters, and engine idle.

Fluid Maintenance

Procedures for changing engine oil and gear oil.

Component Inspection and Electrical

Checking propellers, anodes, batteries, and wiring.

Trouble Recovery

Troubleshooting Engine Issues

Solutions for common engine performance and starting problems.

Specific System Failures

Addressing power tilt, fuse, impact damage, and emergency starting.