O.S. FS-70S II, FS-91S II, FS-91S II-P Four Cycle Engine Owner's Instruction Manual

This manual introduces the operation, maintenance, and maintenance of the O.S. engine.


O.S. FS-70S II, FS-91S II, FS-91S II-P Four Cycle Engine Owner's Instruction Manual - cover page
Brand
OS
Category
Other
Document type
User Manual
Language
English
Pages
15
File format
PDF
File size
1 MB
Published
13 October, 2023
Updated
13 October, 2023
MD5 checksum
9A93D494A550130FA9B3CB30139A7B14

About this manual

This document is the Owner's Instruction Manual for the O.S. FS-70S II, FS-91S II, and FS-91S II-P four-cycle engines. It emphasizes strict adherence to safety instructions regarding propeller hazards, fuel handling, and carbon monoxide exhaust before operation. The manual covers the introduction, installation of the glow plug, relocation of carburettor controls, and fuel tank installation.

What's inside

  • SAFETY INSTRUCTIONS AND WARNINGS
  • INTRODUCTION, INSTALLING THE GLOWPLUG
  • RELOCATION OF CARBURETTOR CONTROLS
  • FUEL TANK, INSTALLATION
  • EXHAUST HEADER PIPE AND SILENCER
  • CARE OF FUEL PUMP AND REGULATOR
  • PROPELLERS
  • STARTING
  • RUNNING-IN
  • VALVE ADJUSTING

Specifications

Engine TypeFour Cycle Engine
Fuel TypeModel engine fuel
Fuel Pump Type (FS-91S II-P)O.S. PD-07 diaphragm type

Frequently asked questions

Is this engine suitable for use other than model aircraft?

No, this engine was designed specifically for model aircraft and should not be used for any other purpose.

What type of starter is recommended for this engine?

An electric starter is recommended for this engine.

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