Saito FG-20 - User Manual

Owner’s Operating Instruction Manual
Saito
™
4-Stroke Gasoline Engines
Model FG-20 & FG-36 | Version 2008
Warning:
• Donotmodifyanypartsoftheengine
• Thisengineisdesignedforusewithradiocontrolmodelaircraft
• Incaseofmodificationsbythecustomer,HorizonHobbyInc.shallnotbearany 
 responsibilityfromanydamagecausedbysuchmodification
• Keeptheignitionsystemwellmaintained
™
Distributed exclusively by
Horizon Hobby, Inc., Champaign, IL 61822
www.horizonhobby.com
© 2009
SAIMAN1LG
14387
Printed 01/09
14387 SAI FG_20andFG_36 Manual.indd 26-1 12/16/08 2:09:10 PM

Summary

Introduction to Saito 4-Stroke Engines

Features of the Gasoline 4-Stroke Engine

Highlights key advantages like fuel efficiency and clean operation.

Included Engine Components

FG-36 Parts List

Lists all components included with the FG-36 engine model.

FG-20 Parts List

Lists all components included with the FG-20 engine model.

Engine Mounting and Muffler Attachment

Engine Mounting Notes

Details the process and recommendations for securely mounting the engine.

Muffler Attachment Instructions

Explains how to properly attach the engine's muffler.

Throttle Linkage and Propeller

Throttle Linkage Setup

Describes the procedure for connecting and adjusting the throttle linkage.

Recommended Propeller Sizes

Provides guidance on selecting appropriate propeller sizes for optimal performance.

Fuel and Ignition System Details

Fuel Tank and Plumbing

Details on fuel tank connection and necessary fuel line types.

Ignition System Setup

Instructions for connecting and positioning the ignition system components.

Spark Plug and Carburetor

Information on spark plug types and carburetor specifics.

Engine Starting Procedures

Preparation Before Starting

Steps to take before attempting to start the engine for the first time.

Starting the Engine

Detailed steps for safely starting the engine, including use of electric starter.

Carburetor Adjustment

Low-Speed Needle Valve Adjustment

Procedure for adjusting the low-speed needle for idle speed.

High-Speed Needle Valve Adjustment

Procedure for adjusting the high-speed needle for peak RPM.

Operation, Maintenance, and Troubleshooting

Normal Operation and Maintenance

Guidelines for ensuring the long life and proper function of the engine.

Troubleshooting Guide

Common problems and their solutions for engine starting and operation.

Engine Maintenance

Procedures for maintaining the engine and its components.

Valve and Carburetor Maintenance

Valve;Tappet Gap Adjustment

Procedure for adjusting valve clearances for optimal engine performance.

Carburetor Maintenance

Troubleshooting steps for carburetor issues and general advice.

FG-20 Engine Specifications and Parts

FG-20 Dimensions and Specifications

Detailed dimensions, specifications, and performance data for the FG-20 engine.

FG-20 Parts List

Comprehensive list of all part numbers for the FG-20 engine.

FG-36 Engine Specifications and Parts

FG-36 Dimensions and Specifications

Detailed dimensions, specifications, and performance data for the FG-36 engine.

FG-36 Parts List

Comprehensive list of all part numbers for the FG-36 engine.

Comprehensive Parts List

FG-20 and FG-36 Combined Parts

A consolidated list of parts for both FG-20 and FG-36 models.

Consumer Warranty and Repair Policy

Warranty Coverage Details

Explains the limited warranty period, coverage, and exclusions.

Warranty Registration and Service

Instructions for warranty registration, repair process, and contact information.

Saito FG-20 Specifications

General

Bore	32.0 mm
Stroke	25.0 mm
Ignition	Electronic ignition
Lubrication	Oil mixed in fuel
Cooling	Air-cooled
Power Output	2.2 HP
Fuel	Gasoline with oil mix