User manual OS ENGINES MAX-61FX

[. . . ] It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-6 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 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 aircraft, radio control equipment, etc. , are accessible for checking at the same time. q CONTENTS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O. S. ENGINE FEATURES OF FX SERIES ENGINES, BEFORE INSTALLING THE ENGINE BASIC ENGINE PARTS NEEDLE-VALVE LOCATION INSTALLATION OF THE ENGINE THROTTLE LINKAGE, SILENCER FUEL TANK LOCATION GLOWPLUG FUEL, PROPELLERS MIXTURE CONTROLS BEFORE STARTING STARTING 2~6 7 8 8~9 10 11~12 12 13 14~15 15 16~17 17~18 19~21 22 23 24 25 26~33 34~35 36~37 38~41 42 RUNNING-IN (Breaking-in) IDLING ADJUSTMENT CHART MIXTURE CONTROL VALVE ADJUSTMENT, REALIGNMENT OF MIXTURE CONTROL VALVE SUBSEQUENT STARTING PROCEDURE SUBSEQUENT READJUSTMENT CARBURETOR CLEANLINESS, ENGINE CARE AND MAINTENANCE ENGINE EXPLODED VIEWS & ENGINE PARTS LISTS CARBURETOR EXPLODED VIEWS & PARTS LISTS GENUINE O. S. [. . . ] 1 Fuel Model glowplug engine fuel of good quality, preferably containing a small percentage of nitromethane. 3 Propeller Suggested size is 10x6(40FX), 11X6 (46FX), 12X6 (50SX, 61FX), or 15x8(91FX) . 4 Glowplug battery The power source for heating the glowplug may be either a large heavy-duty 1. 5volt dry cell, or preferably, a 2-volt rechargeable lead-acid cell (accumulator). If a 2-volt cell is employed, use a resistance wire, as shown, to reduce applied voltage, otherwise element will overheat and burn out. 1. 5 volt heavy-duty or 2 volt rechargeable dry battery lead-acid cell (at least 5Ah) Warning (Very hot) Never touch the nichrome wire while the battery is connected. Resistance coil (nichrome wire) to ge ss. incr htness brig Battery leads Adjust applied voltage by changing the position of clip on resistance coil until glowplug element is glowing bright red. 5 Battery leads Battery leads These are used to conduct current from the battery to the glowplug. Basically, two leads, with clips, are required, but, for greater convenience, twin leads with special glowplug connectors, as shown on the right, are commercially available. 16 6 Fuel tank For installation in the model, a 300cc (10. 6oz. ) for 50SX and 40, 46FX, a 350cc (12oz. ) for 61FX, a 450cc (15. 8oz. ) for 91FX tank, is suggested. 7 Fuel bottle or pump For filling the fuel tank, a simple, polyethylene "squeeze" bottle, with a suitable spout, is all that is required. Alternatively, one of the purpose-made manual or electric fuel pumps may be used to transfer fuel directly from your fuel container to the fuel tank. 8 Electric starter and starter battery An electric starter is recommended for starting. 12V Battery 10 Silicone tubing This is required for the connection between the fuel tank and engine. long plug wrench is available as an optional accessory. For tightening glowplug Fuel bulb Fuel pumps Electric Manual Starter STARTING 1. solid aluminium alloy spinner-nut for centering the rubber drive insert of the starter. Alternatively, a good quality spinner, enclosing the propeller boss, may be used, but make sure that it is of precision-made and sturdy construction so that the spinner shell cannot loosen when the starter is used. Close the throttle. 9 Fuel can filter Fit a filter to the outlet tube of your refuelling container to prevent entry of foreign matter into the fuel tank. Fuel Can Filter 17 3. Do not allow fuel to overflow into the silencer, otherwise the engine may become flooded and difficult to start. (Do not overtighten. ) Now open the needle-valve counterclockwise to the starting setting:· 112~2 turns for 50SX, 40, 46, 61FX · 2~2 12 turns for 91FX · 3~4 turns for 61FX when a tuned silencer is used. Mark Turn needle-valve clockwise to close (for leaner mixture) Turn needle-valve counter-clockwise Close to open (for richer mixture) Open 6. Bring electric starter into contact with spinner-nut or spinner and depress starter switch for one or two seconds. Attention : Do not choke the carburettor air intake when applying the starter. This could cause an excessive amount of fuel to be drawn into the cylinder which may initiate an hydraulic lock and damage the engine. If the engine does not start within 10 repeat applications of the starter, remove the glow-plug, check that it glows brightly and that the cylinder is not flooded with fuel. (To eject excess fuel, close needlevalve and apply starter with glowplug removed. ) Then try again. at full-throttle and with the needle-valve closed to its optimum setting) the engine must be adequately run-in, otherwise there is a danger of it becoming overheated and damaged. 5. when the engine starts. ) Fully closed position 1 4 Fully opened position 3 4 Set at this point 18 RUNNING-IN ("Breaking-in") All internal-combustion engines benefit from extra care when they are run for the first few timesknown as running-in or breaking-in. [. . . ] Do not forget to clean the filters regularly to remove dirt and lint that accumulate on the filter screen. Also, clean the carburetor itself occasionally. ENGINE CARE AND MAINTENANCE 1. At the end of each operating session, drain out any fuel that may remain in the fuel tank. Next, energize the glowplug and try to restart the engine to burn off any fuel that may remain inside the engine. [. . . ]