Yamaha F20B User Manual

Operation
56
with another boat or an obstacle.
[EWM01960]
3. To return the outboard motor to the nor-
mal running position, press the power tilt
switch and slowly tilt the outboard motor
down.
EMU28195
Cruising in other conditions
Cruising in salt water
After operating in salt water, flush the cooling
water passages with fresh water to prevent
them from becoming clogged. Also rinse the
outside of the outboard motor with fresh wa-
ter.
Cruising in muddy, turbid, or acidic water
Yamaha strongly recommends that you use
the optional chromium-plated water pump kit
(see page 13) if you use the outboard motor
in acidic water or water with a lot of sediment
in it, such as muddy or turbid (cloudy) water.
After operating in such water, flush the cool-
ing passages with fresh water to prevent cor-
rosion. Also rinse the outside of the outboard
motor with fresh water.
UP
ZMU01935
UP
DN
ZMU05580
UP
UP
ZMU04900

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.