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. ● also, please study the entire contents of this instruction manual, so as to famil...
2 remember that your engine is not a "toy", but a highly efficient internal- combustion machine whose power is capable of harming you, or others, if it is misused. As owner, you, alone, are responsible for the safe operation of your engine, so act with discretion and care at all times. If at some fu...
4 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, following the manufacturers' recommenda- tions, using appropriate screws and lock- nuts. Be sure to use the silencer (muffler) supplied with the engine. Frequ...
6 notes adjust the throttle linkage so that the engine stops when the throttle stick and trim lever on the transmitter are fully retarded. Alternatively, the engine may be stopped by cutting off the fuel supply. Never try to stop the engine physically. Take care that loose clothing (ties, shirt slee...
8 standard accessories f-5030 silencer assembly silencer body about the engine exhaust header pipe (w/m11 lock nuts) please note that this engine is not supplied with any tools (e.G. Allen keys, wrenches, etc.) this is the fourth model from the new fs series of the single cylinder overhead valve fou...
10 tools, accessories, etc. The following items are necessary for operating the engine. Before starting the choice of propeller depends on the design and weight of the aircraft and the type of flying in which you will be engaged. Determine the best size and type after practical experimentation. As a...
12 a fuel tank of approximately 220cc capacity is suggested. This allows around 12 minutes flying time, dependent upon the type of fuel used, the size of propeller and on the amount of full-throttle to part-throttle operation throughout the flight. Fuel tank glow plug o.S. Type f glowplug is supplie...
14 it is suggested to use as heavy and rigid as possible engine mounting for highest performance and safe running. Conventional wooden mounting beams should be of rigid hardwood and of at least 15mm or 5/8-in square section. Use at least 3mm steel screws, such as allen type, with locknuts, for bolti...
16 throttle linkage before connecting the throttle to its servo, make sure that the throttle arm and linkage safely clear any adjacent part of the airframe structure, etc., as the throttle is opened and closed. Connect the linkage so that the throttle is fully closed when the transmitter throttle st...
18 the exhaust outlet of the silencer can be rotated to any desired position in the following manner: loosen the locknut and assembly screw. Set the exhaust outlet at the required posi- tion by rotating the rear part of the silencer. Re-tighten the assembly screw, followed by the locknut. Assembly s...
20 propeller there is a risk, particularly with powerful four- stroke engines, of the propeller flying off if the prop nut loosens due to detonation ("knocking") in the combustion chamber when the engine is operated too lean, or under an excessively heavy load. Obviously, this can be very hazardous....
22 mixture controls relocation of carburetor controls carburetor retaining screw intake manifold retaining screw remove the intake manifold retaining screws and carburetor retaining screws. 1. The carburetor can be turned 180 to reverse the needle-valve and throttle lever position. 2. Rotate the int...
24 starting the fs -72 is not equipped with manual choke controls, as it is intended for use with an electric starter only. A high-torque electric starter not only makes starting the engine easier, it dispenses with the need for a choke valve by turning the engine over fast enough to the cylinder au...
26 check these conditions and, instead of pressing the starter button after applying the starter, have the starter spinning before applying it to the engine, to give it a "running start". When the engine starts, slowly open the throttle, leaving the needle-valve at its rich starting setting to promo...
28 warning: when ground running the engine, avoid dusty or sandy locations. If dust or grit is drawn into the engine, this can have a ruinous effect, drastically shortening engine life in a matter of minutes. Following the initial running-in session, check for any looseness in the installation due t...
30 carburetor care & maintenance if you experience difficulty in obtaining a consistent mixture setting it could be due to foreign debris in the carburetor. Carefully disassemble the carburetor and wash in methanol. Do not use gasoline or kerosene that can effect the silicone rubber "o" rings. Debri...
32 install an in-line fuel filter between the tank and carburetor to prevent dirt and foreign in the tank from entering the carburetor. If these precautions are neglected, restriction of fuel flow may cause the engine to cut out, or the fuel/air mixture to become too lean causing the engine to overh...
34 engine exploded view & p ar ts list type of screw c...Cap screw n...Round head screw cap screw sets (10pcs ./sets ) code no . Siz e rocker support retaining screw (1pc.) pcs . Used in an engine cylinder head retaining screw (5pcs.) cover plate retaining screw (4pcs.) cam cover retaining screw (2p...
36 carburetor exploded view type of screw c...Cap screw m...Oval fillister-head screw f...Flat head screw n...Round head screw s...Set screw n.+m3x6 s.M3x3 1 1-1 2 3 4 5 6 7 8 9 10 9-1 s.M3x3 n.+m3x22 2-1 1-2 7-1 7-2 10-1 11 37 carburetor parts list needle assembly "o" ring (2pcs.) set screw needle ...
38 the specifications are subject to alteration for improvement without notice. O.S. Genuine parts & accessories radial motor mount 1/4"-m5 (71905010) (45810200) (45810300) (72200130) booster terminal kit propeller locknut set for spinner 1/4"-m4 (71531000) (71531010) (72403050) (71521000) super fil...
40 memo c copyright 2008 by o.S.Engines mfg. Co., ltd. All rights reserved. Printed in japan. 60092140 110901 6-15 3-chome imagawa higashisumiyoshi-ku osaka 546-0003, japan tel. (06) 6702-0225 fax. (06) 6704-2722 url : http://www.Os-engines.Co.Jp.
