Os-engines 91HZ-R 3C Manuel d'utilisateur Page 1

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

181.2.The Needle Control Arm enables the pilot to make the necessary needle adjustment by means of one of the auxiliary levers on his tra

205.6.4.WARNING:Lean running affects the engine performance very much. Always try to run the engine at slightly rich setting.Close the

22CARE OF REGURETORNEVER disassemble the pressure regulator. Their original performance may not be restored after reassembly.NEVER insert anyt

24JAPANFuel tankFuel Stopper (commercially available)Fuel Filter (commercially available)Check valveCheck valveFuel Stopper (commercially available)T

26CARBURETOR CONTROLSWith a fixed-wing model, power failure is rarely a serious threat to the safety of the aircraft since it can usually glid

28! STARTINGBe sure to use an electric starter to start the engine.Fill the fuel tank with fuel. When filled, prevent the fuel from flowing

305.Inserting the starter shaftInsert the starting shaft into the shaft cup securely.6.PrimingCheck the movement of all the controls after swit

32All internal-combustion engines benefit, to some degree, from extra care when they are run for the first few times known as running-in or break

34As a safety measure, first check the transmitter controls, including the throttle stick and trim lever positions, and hold the mai

36Now re-check hovering performance It may be found that (with the High-Speed Needle Valve now set for optimum full-throttle performa

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

38CARBURETOR CLEANLINESSRemove this with an 8mm wrenchDirt and fibrous mattermostly accumulate hereThe correct functioning of the carburetor dep

40CARE AND MAINTENANCEPlease pay attention to the matters described below to ensure that your engine serves you well in regard to performan

42TROUBLE SHOOTINGSymptomCauseCorrective actionEngine fails to fire.Fuel tank is empty.Fuel not reaching the engine.Fill the tank with fuel and repeat

44SymptomCauseCorrective actionSymptomCauseCorrective actionUnstable idleUnsuitable glowplugUse suggested glowplug in the instructions.Unsuitable fuel

4617C.M3x1512345678910111213141512-116C.M3x1218C.M2.6x181-1ENGINE EXPLODED VIEW798710557987114079871150M2.6x18M3x12M3x15CAP SCREW SETS(10pcs./sets)Cod

48C.M3x811-14-14-24-3456711-111-211-311-41011910-189-19-29-39-4C.M2x523C.M2.6x7123-16-1CARBURETOR EXPLODED VIEWType of screw C...Cap Screw49290851407

50(71531000)(71531010)(72403050) (55500003)(71530510)(71521000)(L) 91M4LONG SOCKET WRENCH WITH PLUG GRIPSUPER FILTERLOCK WASHER(10set)O.S. GENUINE PAR

52MEMOC Copyright 2011 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.60092510 031100 TEL. (06) 6702-0225FAX. (06) 6704-2722

! 4NOTES•••••This engine was designed for model helicopters. Do not attempt to use it for any other purpose.Mount the engine in your model

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 pis

8NOTES WHEN APPLYING AN ELECTRIC STARTERBecause of the initial tightness, of the piston/sleeve assembly a standard electric starter may have d

10Note on heating the glow plug ExampleThe heatsink head and the crankcase of on the engine is treated with an anodized finish which does n

12ENGINE PARTS NAMEHeatsink HeadCarburetorTypr 61F CrankshaftPropeller nutCrankcaseGlowplugBeam MountReguretorHigh SpeedNeedle ValveFuel InletMixture

14Select, by practical tests, the most suitable fuel from among the best quality fuels available in your country for helicopter use. For the best thro

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