O.S. engine FL-70 User Manual

FL-70
FOUR CYCLE ENGINE
OWNER'S INSTRUCTION MANUAL
It is of vital importance, before attempting to
operate your engine, to read the general
•SAFETY INSTRUCTIONS AND WARNINGS'
section on pages 2-6 of this booklet and to strictly
adhere to the advice contained therein.
• Also, please study the entire contents of this
instruction manual, so as to familiarize yourself
with the controls and other features of the
engine.
• Keep these instructions in a safe place so that
you may readily refer to them whenever
necessary.
• It is suggested that any instructions supplied
with the aircraft, radio control equipment, etc.,
are accessible for checking at the same time.

O.S. engine FL-70 Specifications

General

Brand	O.S. engine
Model	FL-70
Category	Engine
Language	English

Summary

Safety Instructions and Warnings

Critical Warnings

Covers events that might involve serious injury, even fatal, in extreme circumstances.

Important Notes

Covers less obvious sources of danger that may cause damage or injury under certain circumstances.

Engine Construction Details

Electric Starter Usage Notes

Introduction to the FL-70 Engine

Pre-Start Preparations

Essential Starting Components

Lists necessary tools and components for engine starting, including glow plug, igniter, and fuel pump.

Fuel System Setup

Details fuel requirements, filters, and fuel tank specifications for engine operation.

Propeller and Spinner Attachment

Discusses propeller choice, attachment, and the use of spinners for starting.

Required Tools and Accessories

Engine Parts Identification

Engine Installation Guidelines

Mounting Beam Requirements

Specifies the need for parallel, properly aligned mounting beams for secure engine installation.

Glowplug Installation Procedure

Details the correct procedure for installing the glowplug with a washer into the cylinder head.

Exhaust System Installation

Fuel Tank and Line Configuration

Throttle Linkage and Needle-Valve Adjustment

Propeller and Spinner Securement

Glowplug Operation and Maintenance

Glowplug Function in Ignition

Explains how the glowplug initiates and maintains ignition in a glowplug engine.

Glowplug Lifespan and Replacement

Discusses factors affecting glowplug life and indicators for replacement.

Carburetor Type and Starting Method

Type 60W Carburetor Controls

Describes the two adjustable controls: Needle Valve and Airbleed Screw.

Engine Starting Procedure

Outlines the steps for starting the engine using an electric starter.

Engine Running-In Procedure

Carburetor Adjustment and Operation

Throttle Control Response Flowchart

Carburetor Air-Bleed Adjustment

Troubleshooting Engine Starting Failures

Valve Clearance Adjustment

Camshaft Timing Settings

General Care and Maintenance

Engine Exploded View and Parts List

Carburetor Exploded View

Carburetor Parts List

O.S. Genuine Parts and Accessories

Engine Dimensions and Specifications