Os-engines 91SZ-H Bedienungsanleitung

It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages

18CARBURETOR CONTROLSWith a fixed-wing model, power failure is rarely a serious threat to the safety of the aircraft since it can usually glide down t

20STARTINGOpenBe sure to use a muffler pressurized fuel feed. Use the same fuel as you intend to employ for actual operation of your model.1.2.Opening

22All internal-combustion engines benefit, to some degree, from extra care when they are run for the first few times known as running-in or breakin

24Having provisionally set the idle mixture, the next step is to adjust the mixture for hovering flight.Hover the model and actuate the throttle to ob

26CARBURETOR CLEANLINESSThe correct functioning of the carburetor depends on its small fuel orifices remaining clear. The minute particles of foreign

27ADJUSTING CHARTHigh Speed Needle Valve - 2 turns opened from fully closed position.Medium Speed Needle Valve - 2 turns opened from fully closed posi

28INSTALLATION OF THROTTLE SERVOServo output armThrottle armAfter the engine is installed in the helicopter, please observe the following recommendati

30TROUBLE SHOOTINGSymptomCauseCorrective actionEngine fails to fire.Fuel tank is empty.Fuel not reaching the engine.Fill the tank with fuel and repeat

32SymptomCauseCorrective actionSymptomCauseCorrective actionUnstable idleUnsuitable glowplugUse suggested glowplug in the instructions.Unsuitable fuel

34ENGINE EXPLODED VIEWType of screw C…Cap Screw M…Oval Fillister-Head ScrewF…Flat Head Screw N…Round Head Screw S…Set Screw ＊C.M3x15C.M3x12123456

!!2Remember that your engine is not a "toy", but a highly efficient internal-combustion machine whose power is capable of harming you, o

36CARBURETOR EXPLODED VIEWType of screw C...Cap Screw M...Oval Fillister-Head ScrewF...Flat Head Screw N...Round Head Screw S...Set ScrewC.M3x811-

38(L) (72403050)(71705000) (55500003)(71608001)No.8(71605100)A5(27708010)(27708200)(71530510)91(71521000)M4LONG SOCKET WRENCH WITH PLUG GRIPSUPER FIL

40MEMOC Copyright 2005 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.60091740 030603TEL. (06) 6702-0225FAX. (06) 6704-27226

!4NOTES•••••These engine were designed for model helicopters. Do not attempt to use it for any other purpose.Mount the engine in your model securely

6Notes on installing cooling fan and clutchDo not use a tool which locks piston when installing a cooling-fan and clutch, or top of the piston may b

8Note on heating the glow plug The heatsink head on the engine is treated with Alumite which does not conduct current. Therefore, when heating a glow

10Items necessary for startingTools, accessories, etc.The following items are necessary for operating the engine.BEFORE STARTINGGlow PlugO.S. No.8 is

12TOOLSScrewdriverNecessary for engine installation.1.5mm, 2mm, 2.5mm, 3mmNecessary for carburetor adjustments.No.1, No.2, etcPhillips ScrewdriverNo.1

14JAPANINSTALLATION OF THE CARBURETOR1.2.Retainer screwCarburetor RubberGasket0.2mm gapCarburetor RubberGasketINSTALLATION OF THE STANDARD ACCESSORIES

16INSTALLATION OF THE ENGINEThe under-surfaces of all O.S. engine beam mounting lugs are precision machined flat and exactyly parallel to the engine&a