Os-engines 25LA Manual de usuario

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

NEEDLE-VALVE EXTENSIONThe needle-valve supplied with these engines is designed to incorporate an extension so that, when the engine is enclosed within

BEFORE STARTINGTools, accessories, etc.The following items are necessary for operating the engine.1 FuelModel glowplug engine fuel of good quality, p

9 Fuel can filterFit a filter to the outlet tube of your refuelling container to prevent entry of foreign matter into the fuel tank. (Refer to o

Fuel and pressure linesConnect suitable lengths of silicone tubing, as illustrated, after installing the engine.Silicone tubingUse knife or razor blad

AB75%20%5%65%20%15%MethanolCastor OilNitromethaneModel engine fuel is poisonous. Do not allow it to come into contact with the eyes or mouth. Always s

Inatall a plug suitable for the engine.Use fuel containing a moderate percentage of nitromethane unless more is essential for racing events.Do not run

Warning: When using a spinner assembly, make sure that the notches in the spinner shell are large enough to clear the propeller blades and so do not c

CloseOpenNeedle-valveOpen the needle-valve 4 turns(for 10LA), 3 turns (for 15LA), 1 turns (for 25LA) in the direction of arrow from the closed posi

After fuel has been drawn to the carburettor, flip the propeller two more revolutions, with intake choked, to draw fuel into engine.Above procedure is

10 Hold model securely when starting11 Setting the throttle12 Heat glowplugStarterAssistant should hold the model so that it cannot move forward whe

CONTENTSSAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINEINTRODUCTIONINSTALLATION OF THE ENGINEINSTALLATION OF SILENCERBEFORE STARTINGADVICE ON

Check that the throttle is one-third open from the fully closed position. Bring the starter into contact with the spinner nut or spinner and depress t

16 Disconnect battery leadsDisconnect the battery leads from the engine with care so that the plug clip does not touch the rotating propeller.If the

18 Needle-valve adjustment(Summary)Practical best(optimum) needle-valve setting Exhaust note starts to change.Disconnect battery leads from glowplug

Once the optimum needle-valve setting has been established (see "Needle-valve adjustment-Summary") the procedure for starting is simplified

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

Start the engine.Make sure that the throttle isfully open.Adjust the neede-valve.Close the throttle gradually.Find the idling position.Fix the idling

CARBURETTOR AIR-BLEED ADJUSTMENTStart engine and adjust needle-valve as previously described.Close the throttle gradually.Find the idling position.app

123SymptomFactorCauseCorrective actionRecharge the electric starter battery.Recharge lead-acid cell or replace dry battery. (Note: An unused, or almos

SymptomFactorCauseCorrective action231233332Voltage too high or too low. Re-check and readjust referring to "BEFORE STARTING" paragraph 4.Co

CARE AND MAINTENANCE To ensure that you obtain long life and peak performance from your engine, observe the following.Avoid running the engine under d

Remember that your engine is not a "toy", but a highly efficient internal-combustion machine whose power is capable of harming you, or other

O.S. GENUINE PARTS & ACCESSORIES RADIAL MOTOR MOUNT(71909110) for 10LA(71909310) for 15LA(71908100) for 25LA / "-28(21125108) for 10/15LA

Type of screw C…Cap Screw M…Oval Fillister-Head ScrewF…Flat Head Screw N…Round Head Screw S…Set Screw EXPLODED VIEW(MAX-10LA)1233-14567890---1--2=

ENGINE PARTS LISTSpecifications are subject to alteration for improvement without notice.(MAX-10LA)Cylinder HeadCylinder Piston & Connecting Rod

Type of screw C…Cap Screw M…Oval Fillister-Head ScrewF…Flat Head Screw N…Round Head Screw S…Set Screw wq=-0543125-15-2=-3=-5=-4=-2=-1N.+M3X12(25LA

ENGINE PARTS LISTSpecifications are subject to alteration for improvement without notice.(MAX-15LA,25LA)15LA 25LA21754000217530002170600021205040217

23457611- 1N.+M3X6N.+M2X14(10G)N.+M2.6X15N.+M3.5X5N.+M2X6(10G)M.+M2.6X74CARBURETTOR EXPLODED VIEW & PARTS LISTSpecifications are subject to alte

MAX-10LA THREE VIEW DRAWING Displacement Bore Stroke Practical R.P.M. Power output Weight1.76 cc (0.107 cu.in.)13.44mm (0.529 in.)12.4mm (0.488 in.)2

MAX-15LA/25LA THREE VIEW DRAWING Displacement Bore Stroke Practical R.P.M. Power output Weight4.07 cc (0.249 cu.in.)18.0mm (0.709 in.)16.0mm (0.630

C Copyright 2000 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.UNEQUALLEDQUALITYPRECISION&PERFORMANCEESTABLISHINGTHESTANDAR

WARNINGSModel 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

NOTES•••••This engine was designed for model aircraft. Do not attempt to use it for any other purpose.Mount the engine in your model securely, followi

NOTES••Always check the tightness of the propeller nut and retighten it, if necessary, before restarting the engine, particularly in the case of four-

NOTES•••••Adjust the throttle linkage so that the engine stops when the throttle stick and trim lever on the transmitter are fully retarded. Alternati

INTRODUCTIONTHE MAX-10LA,15LA,25LA have been developed to meet the requirements of beginners and sport flyers.Of modern design and having a separate

INSTALLATIONHow to fasten the mounting screws.Hardwood mounting beamsO.S. radial motor mount(cast aluminum)Tighten second nut firmlydown onto first nu