User manual OS ENGINES MAX-61LX

[. . . ] MAX-61LX-HRING 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. q Also, please study the entire contents of this instruction manual, so as to familiarize yourself with the controls and other features of the engine. q SERIES 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 model, radio control equipment, etc. , are accessible for checking at the same time. q CONTENTS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O. S. ENGINE INTRODUCTION BASIC ENGINE PARTS, INSTALLATION BEFORE STARTING FACTS ABOUT GLOW PLUGS FUEL CARBURETTOR CONTROLS STARTING RUNNING-IN, SETTING UP, STARTING AND ADJUSTMENT 2~5 6 SUBSEQUENT READJUSTMENTS CARBURETTOR CLEANLINESS ADJUSTING CHART 7~8 INSTALLATION OF THROTTLE SERVO 8~10 CARE AND MAINTENANCE 10~11 12 13~14 15~17 CARBURETTOR EXPLODED VIEW & PARTS LIST THREE VIEW DRAWING O. S. [. . . ] First, run the engine as received, and re-adjust the Mixture Control Valve only when necessary. Thick Throttle Lever Needle Valve Lean Mixture Control Valve 12 STARTING Be sure to use a muffler pressurized fuel feed. Use the same fuel as you intend to employ for actual operation of your model. Opening and closing of the Needle-Valve Turn the needle clockwise to close the needle-valve, and turn the needle counter-clockwise to open the needle-valve as shown in the sketch. Open 4. Checking the rotating direction of the starter Make sure that the starter rotates to the direction shown in the sketch. Inserting the starter shaft Insert the starting shaft into the shaft cup securely. Priming Without heating the glowplug, open the throttle a little from the idling position. Turn the engine using the starter until the fuel is seen to reach carburetor. Preparation of starting Make sure that the transmitter throttle stick is at the fully closed position and the throttle trim at center position, and make sure that idle-up switch on the transmitter is off. Hold the rotor head by hand so that rotor cannot rotate when the engine is Started. Also, steady the model with a foot on the landinggear skid. Close 2. Opening the needle-valve Firstly, turn the needle clockwise slowly until it stops. The position it stops is the fully closed position of the needle-valve. Preparation of the starter Install the starting shaft to the starter securely. Poor installation swings the starting shaft, which is dangerous. 13 8. Starting Connect the battery to the glowplug and start the engine by applying the starter. When started, switch off the starter and withdraw the starting shaft after making sure the rotation of the starter shaft stops. Stopping the engine Fully pull down the throttle trim on the transmitter. Hold the rotor head, and pinch the silicone tube to stop the fuel supply. If it still does not stop, pull off the fuel tubing from the carburetor. It is necessary to readjust the throttle linkage so that the carburetor rotor is fully closed when the throttle stick and throttle trim on the transmitter are fully pulled Down. NOTE: If the throttle response is poor or the engine stops due to a temporarily over-rich mixture immediately after the engine is started, pinch the fuel line for one or two seconds until the engine r. p. m. Never touch, or allow any object to come into contact with, the rotating rotor. 14 RUNNING-IN ("Breaking-in") 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-in. [. . . ] The minute particles of foreign matter that are present in any fuel can easily partially obstruct these orifices and upset mixture strength so that engine performance becomes erratic and unreliable. It is recommended that fuel is passed through a filter when the tank is filled and that a good in-line filter is installed between the fuel tank and carburettor and, furthermore, that this filter is frequently cleaned to remove dirt and lint that accumulates on the filter screen. Finally, occasionally remove the needle-valve holder from the carburetor as shown in Sketch and extract any remaining foreign matter that may have lodged in the location shown in Sketch. Remove this with an 8mm spanner Dirt and fbrous matter mostly accumulate here 18 ADJUSTING CHART A Open the Needle Valve11/2 turns from the fully closed position. B C Start the engine Warm up the engine Observe the mixture condition while "floating" the model Lean mixture EF Turn the Mixture Control Screw counter-clockwise G Observe the hovering mixture condition Lean mixture I Open the Needle Valve (Turn counter-clockwise) J K Idle for approx: 10 seconds, then reopen throttle to observe transition ("Float" the model) Lean mixture Turn the Mixture Control Screw counter-clockwise L High Speed Flight Lean mixture Open the Needle Valve (Turn counter-clockwise) MN Fine tuning of hovering mixture Response too sensitive Response too slow PQ Turn the Needle Valve 2 or 3 clicks counterclockwise, or turn the Mixture Control Screw 2-3 degrees counterclockwise. [. . . ]