Os-engines 91HZ Manual do Utilizador

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

18INSTALLATION OF THE CARBURETOR1.2.Retainer screwCarburetor RubberGasket0.2mm gapCarburetor RubberGasketInsert the carburetor rubber gasket on

201.2.3.Connect the Needle control Arm lever and servo horn with the linkage rod. Set the linkage so that the Needle control Arm l

22GLOWPLUGThe role of the glowplugGlowplug lifeParticularly in the case of very high performance engines, glowplugs must be regarded as expenda

24BASIC POSITION OF MIXTURE CONTROL SCREW(Mixture Control Valve)ThickMixture Control ValveMIxture Control ScrewLeanAs delivered, the Mixture C

26Open1.2.Opening and closing of the Needle-ValveTurn the needle clockwise to close the needle-valve, and turn the needle counter-clockwis

28In case the engine does not stop.Hold the rotor head, and pinch the fuel line to stop the fuel supply. If it still does not stop, pull off the fuel

30Please observe the following before beginning to make any adjustment. High-Speed Needle Valve. Turn this approximately 30 degrees (3 to 4 cli

32Having 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

34CARBURETOR CLEANLINESSThe correct functioning of the carburetor depends on its small fuel orifices remaining clear. The minute particles of f

36CARE AND MAINTENANCEPlease pay attention to the matters described below to ensure that your engine serves you well in regard to performan

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

38TROUBLE SHOOTINGSymptomCauseCorrective actionEngine fails to fire.Fuel tank is empty.Fuel not reaching the engine.Fill the tank with fuel and repeat

40SymptomCauseCorrective actionSymptomCauseCorrective actionUnstable idleUnsuitable glowplugUse suggested glowplug in the instructions.Unsuitable fuel

42ENGINE EXPLODED VIEWType of screw C…Cap Screw＊ 798710557987114079871150M2.6x18M3x12M3x15CAP SCREW SETS(10pcs./sets)Code No.Size Pcs. used in an engi

44CARBURETOR EXPLODED VIEWType of screw C...Cap Screw44-14-24-3567899-19-29-39-41011-111-211-311-4111312C.M3x811-123C.M2.6x779871020M2.6x7CAP SCREW S

46(71531000)(71531010)(72403050) (55500003)(71530510)(71521000)(L) 91M4LONG SOCKET WRENCH WITH PLUG GRIPSUPER FILTERLOCK WASHER(10set)O.S. GENUINE PAR

48MEMOC Copyright 2008 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.60092340 121005TEL. (06) 6702-0225FAX. (06) 6704-27226-

! 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 this initial tightness, a standard electric starter may have difficulty in rotating the

10Note on heating the glow plug The heatsink head on the engine is treated with an anodized finish which does not conduct current. Therefore, wh

12Heatsink HeadCarburetorTypr 61E CrankshaftPropeller nutCrankcaseGlowplugBeam MountCover PlateHigh SpeedNeedle ValveFuel InletMixture Control ValveTh

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

16The under-surfaces of all O.S. engine beam mounting lugs are precision machined flat and exactyly parallel to the engine's hor