O.S. Engines FS-26S-C II User Manual

It is of vital importance, before attempting to operate your engine, to read the general

'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-5 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 vehicle, radio control equipment, etc., are accessible for checking at the same time.

CONTENTS

SAFETY INSTRUCTIONS AND WARNINGS		TROUBLE SHOOTING	20-23
ABOUT YOUR O.S. ENGINE, NOTES WHEN
APPLYING AN ELECTRIC STARTER	2-6	ENGINE EXPLODED VIEW
INTRODUCTION	7	& PARTS LIST	24-25
BEFORE STARTING,	8-9	CARBURETOR EXPLODED VIEW
BASIC ENGINE PARTS		& PARTS LIST	26
GLOWPLUG,
AIR CLEANER TYPE 102S	10-11	O.S. GENUINE PARTS &	27-28
INSTALLATION OF THE CARBURETOR &		ACCESSORIES
HYPER EXHAUST GASKET,	12-13	THREE VIEW DRAWING	29
INSTALLATION
STARTING THE ENGINE & RUNNING-IN		MEMO	30
('Breaking-in'), VALVE ADJUSTING	14-18
CARE & MAINTENANCE,
PARTS REPLACEMENT	19

1

SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE

Remember that your engine is not a "toy", but a highly efficient internalcombustion machine whose power is capable of harming you, or others, if it is misused.

As owner, you, alone, are responsible for the safe operation of your engine, so act with discretion and care at all times.

If at some future date, your O.S. engine is acquired by another person, we would respectfully request that these instructions are also passed on to its new owner.

The advice which follows applies basically to ALL MODEL ENGINES and is grouped under two headings according to the degree of damage or danger which might arise through misuse or neglect.

!WARNINGS

These cover events which might involve serious (in extreme circumstances, even fatal) injury.

!NOTES

These cover the many other possibilities, generally less obvious sources of danger, but which, under certain circumstances, may also cause damage or injury.

2

!WARNINGS

•Model engine fuel is poisonous. Do not allow it to come into contact with the eyes or mouth.Always store it in a clearly marked container and out of the reach of children.

•Model engine fuel is also highly flammable. Keep it away from an open flame, excessive heat, sources of sparks, or anything else which might ignite it. Do not smoke or allow anyone else to smoke, near to it.

•Never operate your engine in an enclosed space. Model engines, like automobile engines, exhaust deadly carbon-monoxide. Run your engine only in an open area.

•Model engines generate considerable heat. Do not touch any part of your

engine until it has cooled. Contact with the muffler (silencer), cylinder head or exhaust header pipe, in particular, may result in a serious burn.

3

!NOTES

•This engine is intended for model cars. Do not attempt to use it for any other purpose.

•Mount the engine in your model securely, following the manufacturers' recommendations, using appropriate screws and locknuts.

•Install an effective silencer (muffler). Frequent close exposure to a noisy exhaust (especially in the case of the more powerful highspeed engines) may eventually impair your hearing and such noise is also likely to cause annoyance to others over a wide area.

•The wearing of safety glasses is also strongly recommended.

•Take care that the glowplug clip or battery leads do not come into contact with rotating parts. Also check that the linkage to the throttle arm is secure.

•For their safety, keep all onlookers (especially small children) well back (at least 20 feet or 6 meters) when preparing your model for running.

4

!NOTES

Before starting the engine, always check the tightness of all the screws and nuts especially those of joint and movable parts such as throttle arm. Missing retightening the loose screws and nuts often causes the parts breakage that is capable of harming you.

•To stop the engine, fully retard the throttle stick and trim lever on the trans-mitter, or, in an emergency, cut off the fuel supply by pinching the fuel delivery line from the tank.

•Warning! Immediately after a glowplugignition engine has been run and is still warm, conditions sometimes exist whereby it is just possible for the engine to abruptly restart if it is rotated over compression WITHOUT the glowplug battery being reconnected.

5

NOTES WHEN APPLYING

AN ELECTRIC STARTER

Do not over-prime. This could cause hydraulic lock and damage the engine on application of the electric starter.

If over-primed, remove glowplug, close needle-valve and apply starter to pump out surplus fuel. Cover the head with a rag to prevent pumped out fuel coming into your eyes.

6

INTRODUCTION

The FS-26S-C Ver.II is an overhead valve four stroke cycle engine designed expressly for 1/10 class R/C vehicles.

Newly designed 20P carburetor has a bigger bore of 5mm for increased power. For longer life of the engine, Super Air Cleaner 102S is supplied as standard.

Note:

As delivered, the carburetor is not installed on the engine.

7

STANDARD ACCESSOIES

Glow Plug Type F

(included with the engine)

Super Air Cleaner

102S Assembly

Hyper Exhaust Gasket

Insulator

Carburetor Retainer

Intake Pipe Assembly

Carburetor Complete

(Type 20P)

	BEFORE STARTING			Model engine fuel is also highly flammable.
				Keep	it away	from open	flame, excessive
	Tools, accessories, etc.The following items are
				!heat,	sources	of sparks,	or anything else
	necessary for operating the engine.
				which might ignite it. Do not smoke or allow
	FUEL
				anyone else to smoke, near to it.
	Generally, it is suggested that the user selects a fuel			FUEL FILTER
	that is commercially available for model two-stroke
				To installed in the fuel line between
	engines and contains 10-30% nitromethane. As a
				fuel tank and carburetor to prevent
	starting point, we recommend a fuel containing 20%
	nitromethane, changing to a fuel containing more			dust coming into the carburetor.
	nitro if necessary. When the	brand of fuel	is	GLOWPLUG IGNITER
	changed, or the nitro content	increased, it	is
				Commercialy available handy
	advisable to repeat the running-in procedure
				glowplug heater in which the
	referred to in the RUNNING-IN paragraphs. Please
	note that with high-nitro fuels,			glowplug	battery	and battery
	although power may be increased			leads are integrated.
	for competition purposes, glowplug
	elements do not last as long and			STARTER BOX
	engine life will be shortened.
				For starting the engine.
	REMINDER!			FUEL PUMP
	Model engine fuel is poisonous. Do not allow
	!it to come into contact with the eyes or			For filling the fuel tank, a simple, poly-
	mouth. Always store it in a clearly marked			ethylene "squeeze" bottle, with a suit-
	container and out of the reach of children.			able spout, is required.
				8

SILICONE FUEL LINE

Heatproof silicone tubing of approx. 5mm o.d.	BASIC ENGINE PARTS
and 2mm i.d. is required for the connection
between the fuel tank and engine.	Rocker Cover
TOOLS	Glow Plug	Cylinder Head
HEX WRENCH
	Intake Pipe
Necessary for engine installation.
1.5mm, 2mm, 2.5mm, 3mm

SCREWDRIVER

Necessary for carburetor adjustments. No.1, No.2, etc

LONG SOCKET WRENCH WITH PLUG GRIP

Recommended for easy removal and replacement of the angled and recessed glowplug, the O.S.Long Socket Wrench incorporates a special grip.

Carburetor
Type 20P	Crankcase
	Beam Mount

Cover Plate

9