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O.S. Engine IL-300 Owner's Instruction Manual

Manual is about: Inline four-cylinder overhead-valve four-stroke-cycle engine

Summary of IL-300

  • Page 1

    It is of vital importance, before attempting to operate your engine, to read the general 'safety instructions and warnings' section on pages 2-4 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 familia...

  • Page 2: Warnings

    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 or abused. As owner, you, alone, are responsible for the safe operation of your engine, so act with discretion and care at all times. If...

  • Page 3: Notes When Applying

    4 take care that the glow plug clip or battery leads do not come into contact with the propeller. Also check the linkage to the throttle arm. A disconnected linkage could also foul the propeller. After starting the engine, carry out any needle-valve readjustments from a safe position behind the rota...

  • Page 4: About The Engine

    6 the o.S. Il-300 (dia-star) is a four-cylinder inline overhead-valve four-stroke-cycle engine of 50cc displacement. The engine maintains the same features of stress free starting, super smooth idling and high torque power which is always the hallmark of o.S. Large size multi-cylinder engines. With ...

  • Page 5: Installation

    8 lock nut propeller washer propeller nut cylinder jacket front housing exhaust pipe cylinder head 1 drive hub crankcase under cover cylinder head 2 cylinder head 3 cylinder head 4 9 needle-valve extension the needle-valve with this engine is designed to incorporate an extension so that, when the en...

  • Page 6: Fuel Tank & Lines

    10 exhaust pipe adjustment the direction of the exhaust pipes may be altered in accordance with individual installation requirements. The angle is easily adjusted by loosening the nut that secures the exhaust pipe to the cylinder head. Use a 12mm wrench. 12mm wrench loosen tighten lock nut exhaust p...

  • Page 7: Glowplug

    12 glowplug the role of the glowplug glowplug life particularly in the case of very high performance engines, glowplugs must be regarded as expendable items. However, plug life can be extended and engine performance maintained by careful use, i.E.: install a plug suitable for the engine. Use fuel co...

  • Page 8: Propeller

    14 18x10-12, 20x8-10, 22x8 propeller the choice of propeller depends on the design and weight of the aircraft and on the type of flying in which you will be engaged. Determine the best size and type after practical experimentation. As a starting point, refer to the props listed in the accompanying t...

  • Page 9: Glowplug Heating

    16 glowplug heating glowplug battery it is necessary to use a glowplug battery of fairly large capacity (10ah or more) as this is required to heat four glowplugs simultaneously. A heavy-duty 1.5-volt dry battery or (preferably) 1.2-volt ni- cd battery may be used. Ni-cd (nickel-cadmium) 1.2-volt rec...

  • Page 10: Fuel and Lubrication

    18 model 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 out of the reach of children. Model engine fuel is also highly flammable. Keep it away from open flame, excessive heat, sources of sparks, or anything els...

  • Page 11

    20 set the throttle valve approximately 1/4 open from the fully closed position. 4. Fully open fully closed set at this position position the throttle stick at 2-3 scales advanced from the fully pulled down position. Turn the prop “backwards” (clockwise) by hand until it is against compression. This...

  • Page 12: Running-In ("breaking-In")

    22 now disconnect the glowplug battery. 8. Adjust the needle-valve 9. Abrupt adjustment of the needle-valve may cause the engine to stop, especially when it is new and insufficiently run-in. As the speed of the engine does not instantly change with needle-valve readjustment, small movements, with pa...

  • Page 13: Throttle Valve Adjustment

    24 throttle valve adjustment needle-valve adjustment adjust the needle-valve following the instructions given in starting section. Mixture control valve adjustment the carburetor of your il-300 has been factory set for the approximate best result with the fuel tank located in the normal position (i....

  • Page 14: Flight & Maintenance

    26 adjusting the mixture control valve if the engine hesitates, puffing out a good deal of smoke, before picking up to full speed, it is probable that the idle mixture is too rich. 1. Mixture control valve screwdriver turn 30 in this case, it will be necessary to turn the mixture control valve clock...

  • Page 15: Valve Clearance Adjustment

    28 0.04mm valve clearance adjustment all o.S. Four-stroke engines have their valve (tappet) clearances correctly set before they leave the factory. However, if, after many hours of running time have been logged, a loss of power is detected, or if the engine has to be disassembled or repaired as a re...

  • Page 16: Engine Exploded View

    30 1 1-1 1-2 2-1 2 3 4 5 6 6-1 6-2 6-3 6-4 7 8 9 10-2 10-1 10 11 12 13 14 15 16 17-1 17 18 19 20 19-1 21 22 23 24 25 26-1 26 27 28 29 30 32-1 31 32 43 44 45 46 47 48-1 48 49 41 50 c.M2.6x7 c.M3x8 c.M3.5x10 c.M3x14 c.M3x8 c.M2.6x7 c.M2.6x7 c.M3.5x10 c.M2.6x7 c.M2.6x7 c.M3.5x10 c.M3.5x10 c.M3x10 s.M3x...

  • Page 17: Exploded View & Parts List

    32 1 1-1 1-2 1-3 1-4 1-5 2 3 4 5 5-1 6 7 8 9 10 27681900 27681970 24981837 26381501 27381940 26711305 22781420 22781411 46581200 26781309 24881824 45581820 22681953 46581100 45515000 79871110 s.M3x3 1-1 1-2 1-3 1-4 1-5 1 5-1 2 3 4 5 6 7 8 9 c.M3x8 10 type of screw c...Cap screw m...Oval fillister-he...

  • Page 18: Three View Drawing

    34 12.5 cc x 4 / 0.765 cu.In. X 4 25.8 mm / 1.02 in. 24.0 mm / 0.94 in. 1,800-8,000r.P.M. 2,350 g / 82 oz. Dimensions (mm) three view drawing specifications displacement bore stroke practicalr.P.M. Output weight 43 116 48.6 43 33 76 40 50 90 72 113 78.5 96 80 133 173 40 40 40 113 234.3 40 121.3 43 2...