FACTORY TUNED ENGINE INSTALLATION OF THE STANDARD ACCESSORIES NOTE: While the Mixture Control Valve and the STARTING THE ENGINE & RUNNING-IN ('Breaking-in) Metering Valve are set at the standard position Installing the glow plug. Insert P3 plug supplied into Running- in is a procedure for an engine to come when the engine leaves the factory, readjustment W/22E(B) heatsink-head carefully, making sure that it is not close to actual running conditions (fuel, r.p.m., may be necessary, occasionally to allow for O.S. SPEED B2103 Type R cross-threaded before tightening firmly. engine temperature, etc.). changes in fuel formula and climatic conditions It is of vital importance, before attempting to operate your Install an effective silencer (muffler). Frequent close (All the O.S. T-Type plugs including the P3 are not Readjust the controls only when satisfactory Excessively rich running and prolonged low speed engine, to read the general 'SAFETY INSTRUCTIONS WARNINGS exposure to a noisy exhaust (especially in the case supplied with a washer.) results cannot be obtained with the standard running should be avoided. Prolonged low speed running and low temperature running may result AND WARNINGS' in the following section and to strictly Model engine fuel is poisonous. Do not of the more powerful highspeed engines) may positions following the instructions mentioned in eventually impair your hearing and such noise is Install the exhaust seal ring in the oil in the fuel becoming gelled and the adhere to the advice contained therein. allow it to come into contact with the eyes the “CARBURETOR ADJUSTMENT” section. also likely to cause annoyance to others over a wide supplied. piston/liner becoming stuck together. Also, please study the entire contents of this or mouth. Always store it in a clearly marked container and out of the reach of children. area. INSTALLATION OF THE CARBURETOR instruction manual, so as to familiarize yourself with PRESSURIZED FUEL SYSTEM The wearing of safety glasses is also strongly As delivered, the engine has its carburetor lightly installed the controls and other features of the engine. Model engine fuel is also highly flammable. It is recommended that a muffler pressurized fuel recommended. Exhaust in the intake boss. Secure it as follows. Keep it away from open flame, excessive feed system be used so that the fuel may be stably SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE heat, sources of sparks, or anything else Take care that the glowplug clip or battery leads do Seal Ring Rotate the retainer nut gently until it stops. fed to the carburetor. Remember that your engine is not a " toy ", but a which might ignite it. Do not smoke or allow not come into contact with rotating parts. Also check highly efficient internal-combustion machine whose anyone else to smoke, near to it. that the linkage to the throttle arm is secure. The following procedure is suitable when a fuel Put in the carburetor one of carburetor reducers power is capable of harming you, or others, if it is containing 30% nitro-methane is used. Model engines generate considerable For their safety, keep all onlookers (especially small according to your taste, generally 6 for buggy and misused or abused. As owner, you, alone, are Tighten a further 1. Set the carburetor controls at the standard positions heat. Do not touch any part of your engine children) well back (at least 20 feet or 6 meters) 6.5 for truggy. responsible for the safe operation of your engine, so when preparing your model for running. 120-180 (positions when the engine leaves the factory.) act with discretion and care at all times. If at some until it has cooled. Contact with the CARBURETOR CONTROLS STANDARD POSITIONS muffler (silencer), cylinder head or future date, your O.S. engine is acquired by another Before starting the engine, always check the (POSITIONS WHEN THE ENGINE LEAVES THE FACTORY) 2. Switch the transmitter and make sure that each exhaust header pipe, in particular, may tightness of all the screws and nuts especially those linkage moves correctly. person, we would respectfully request that these Four adjustable controls are provided on this result in a serious burn. of joint and movable parts such as throttle arm. instructions are also passed on to its new owner. carburetor. Fit the carburetor in the crankcase and align the Missing retightening the loose screws and nuts 3. Make sure rotating direction of the starter box is The advice which follows is grouped under two Never operate your engine in an enclosed space. position mark to position the carburetor perpendicular often causes the parts breakage that is capable of correct (counter-clockwise seen from the front edge headings according to the degree of damage or Model engines, like automobile engines, exhaust to the crankshaft. harming you. Needle Valve of the crankshaft), and turn the engine with the danger which might arise through misuse or neglect. deadly carbon-monoxide. Run your engine only in starter box to draw fuel into the engine. an open area. To stop the engine, fully retard the throttle stick and WARNINGS trim lever on the trans-mitter, or, in an emergency, "O" Ring 4. Connect a glowplug ignitor to heat the plug and start cut off the fuel supply by pinching the fuel delivery "O" Ring the engine with the starter box. These cover events which might involve serious NOTES line from the tank. Retaining Screw When the engine does not start or stops right after (in extreme circumstances, even fatal) injury. This engine is intended for model cars. Do not being started, try the followings. attempt to use it for any other purpose. Warning! Immediately after a glowplug-ignition engine Throttle Stop has been run and is still warm, conditions sometimes Screw Metering Needle Close the needle-valve approx. 15-30° from the NOTES Mount the engine in your model securely, following exist whereby it is just possible for the engine to abruptly Mixture Control Valve standard position. These cover the many other possibilities, generally less the manufacturers' recommendations, using restart if it is rotated over compression WITHOUT the approx 1mm obvious sources of danger, but which, under certain appropriate screws and locknuts. glowplug battery being reconnected. Set the throttle opening a circumstances, may also cause damage or injury. The Needle-Valve: 1. Loosen the retainer screw, rotate the carburetor to its little wider (approx. 1mm) For adjusting air/fuel ratio (air-fuel mixture) at maximum correct position and make sure that it is pressed well than the standard setting down into the intake boss, compressing the rubber NOTES ON OPERATION TOOLS, ACCESSORIES, etc. rpm (fully opened throttle). by adjusting the Throttle gasket, before retightening screw. ENGINE CONSTRUCTION Stop Screw. ABOUT THE WARRANTY The following items are necessary for operating the engine. With this engine, the piston will feel tight at the Since this is a special SPEED version, individual Items necessary for starting 2. Rotate the retainer screw gently until it stops, then top of its stroke (TDC) when the engine is cold. tighten a further 120-180 . special parts are available only for limited period FUEL Needle Valve This is normal. The cylinder bore has a slight Do not overtighten the screw as this will damage the (one year after finishing the production). Generally, it is suggested that the user selects a fuel that is taper. The piston and cylinder are designed to Also, the engine is free of warranty due to damage thermo insulator. 5. When the engine starts, warm it up by repeatedly achieve a perfect running clearance when they commercially available for model two-stroke engines increasing the rpm to medium speed and back and/or wear occurred during running. Note reach operating temperature. When the brand of fuel is changed, or the nitro content again to a fast idle with the mixture set very rich, Be careful not to damage the O rings when increased, it is advisable to repeat the running-in procedure glowplug connected, and the driving wheels clear of Open Close removing the carburetor retainer from the engine. referred to in the RUNNING-IN paragraphs. Please note the ground. The rich mixture will provide adequate Near TDC While Operating (Counter-clockwise) (Clockwise) First, remove the retainer Retaining screw, then that with high-nitro fuels, although power may be increased lubrication and cooling, indicated by profuse pull out each part. Do not push the part in or Please do not run on a public street, this could for competition purposes, glowplug elements do not last [Standard Position] exhaust smoke. cause serious accidents, personal injuries as long and engine life will be shortened. 3 turns opened from the fully closed position. damage the O rings. and/or propetry damage. FUEL FILTER 6. Remove the glowplug ignitor when the engine is [Fully closed position] warmed up and continue running in on a starter box Please do not run near pedestrians or small To installed in the fuel line between fuel tank and carburetor ENGINE INSTALLATION Piston around 2-3 tanks with full-throttle. Remain the Cylinder children. to prevent foreign matter from entering the carburetor. Turn the needle-valve clockwise until it stops. Make sure that the vehicle's engine mounting surfaces carburetor setting very rich as long as the engine Liner Please do not run in small or confined areas. This is the fully closed position. are level and in the same plane. Poor installation may GLOWPLUG IGNITER Do not force it to turn further. does not go into stall. Please do not run where loud noises can disturb cause distortion of the crankcase, bearings, etc., Commercialy available handy glowplug heater in which resulting in erratic running and loss of performance. Crankshaft others, such as hospitals and residential areas. 7. When the engine is warmed up, disconnect the the glowplug battery and battery leads are integrated. The Mixture Control Valve: The recommended screws for securing the engine are glowplug battery and try running the car on the For adjusting acceleration feeling. 3mm or 4-40 steel Allen hexagon socket type. If existing STARTER BOX For starting the engine. track. If the engine stops soon after running at Slight taper (Adjusting range should be within ±1 turn.) holes in the engine mount do not align perfectly with NOTE around mid speed, the mixture is too rich. Close the FUEL PUMP engine mounting lugs, enlarge them slightly with a needle-valve 15~30°. As delivered, the engine has the carburetor For filling the fuel tank, a simple, polyethylene needle-file so that screws are in alignment with the [Standard Position] If the engine still stalls, close the metering needle lightly fit into its intake. Secure it changing its "squeeze" bottle, with a suitable spout, is required. mounting holes. angle according to the car chassis. Flush with the carburetor body. 15~30°. Run the car on the track until one tank of O.S. SPEED SILICONE FUEL LINE (optional extra) fuel has been consumed, then close the needle-valve The connection between the fuel tank and the engine. very little (within 10°). ABOUT THE ENGINE 2.5mm ID When the engine is cold. When the engine is hot. O.S. SPEED B2103 TYPE R is a factory tuned engine 8. Repeat this procedure (close needle-valve very little Mixture Control Valve Do not allow bottom for 1/8 off-road competition, most parts of which are TOOLS after one tank of fuel has been consumed) until approx. of crankcase to newly designed; carburetor, crankcase, piston/liner, Carburetor Body 2 liters of fuel have been consumed, extending O.S. SPEED PISTON PIN RETAINER PLIERS touch chassis. crankshaft, and inner head. O.S. SPEED DRIVER TOOLS gradually the full throttle running time at the straight. NOTES WHEN APPLYING AN ELECTRIC STARTER To say nothing of improvement over its power The Metering Needle: Carefully observe the exhaust smoke. O.S. SPEED FLYWHEEL KEY performance, the inner head with a silicon o-ring For adjusting idle and acceleration feeling. Be sure to run the engine with visible white smoke at all Do not over-prime. This could cause a O.S. SPEED CLUTCH WRENCH & ADJUSTER hydraulic lock and damage the engine on improves anti-vibration and dustproof performance. times. If the smoke is not visible, the needle-valve is The new ball link of carburetor makes linkage O.S. SPEED FLYWHEEL PULLER closed too far. application of the electric starter. [Standard Position] Chamfer inside edges of bearers. adjustment easier. O.S. SPEED PLUG WRENCH If over-primed, remove glowplug, close One turn screwed in from Now the RUNNING-IN (Breaking-in) is completed. needle-valve and apply starter to pump out the flush position with the surplus fuel. Cover the head with a rag to BASIC ENGINE PARTS Note: Standard accessories ball link body prevent any pumped out fuel from getting into In the event of any major working parts (e.g. your eyes. piston/cylinder liner assembly) being replaced or Glow Plug P3 Turbo head 1piece Outer Head Metering Needle the fuel being changed, especially to high nitro (Hot Type) fuel, the complete running-in should be repeated. Ball Link Carburetor Reducer (RED) How to stop the engine 6 1piece each (w/ "O" Ring) The Throttle Stop Screw: Fuel For setting the minimum idle speed: To stop the engine, close the throttle to idle speed and shut it off Carburetor Reducer (RED) [Standard Position] completely with the trim lever on the NOTE 6.5 1piece each (w/ "O" Ring) Cover Plate Approx 0.7mm transmitter then cut off the fuel The engine bottom may interfere with chassis of supply by pinching the fuel delivery some models. In this case, file off the chassis tube to the carburetor. Exhaust Seal Ring 1piece so that the engine may not interfere with the Carburetor chassis when it is installed. Warning! Do not touch rotating parts, engine and silencer Dust Cap 3, 16, 18 1piece each Slide Valve Mounting Lugs when stopping the engine as they become very hot, Crankcase and contact with them may result in a serious burn. Note: Crankshaft Bearing (Front) Crankshaft Sketch shows the carburetor reducer removed. CARBURETOR ADJUSTMENT 2. Do not forget to clean the filters regularly to remove T-2100SC TUNED SILENCER COMPLETE SET ENGINE EXPLODED VIEW ENGINE PARTS LIST Carburetor adjustment should be carried out only after dirt and lint that accumulate on the filter screens. (72107700) Type of screw the running-in has been completed. Also, clean the carburetor itself occasionally. T-2100SC Tuned Silencer Assembly No. Code No. Description C...Cap Screw (72107710) 1 2BP04000 Outer Head Needle Valve Metering Needle 3. At the end of each operating session, drain out any fuel C.M3x18 that may remain in the fuel tank. Afterwards,energize Exhaust Seal Ring (2pcs.) (22826140) 2 2BN04100 Inner Head the glow-plug and try to restart the engine, to burn off Joint Spring (3pcs.) (72106042) 2-1 2BN04180 Inner Head "O" Ring (RED) Open Close Open Close any fuel that may remain inside the engine. Repeat this Head Gasket (0.1mm, 0.15mm) procedure until the engine fails to fire. Do this while the MB01-85(M2004SC) Exhaust Header Pipe 3 2A004160 Assembly (72106910) 4 2BP03010 Built-up Parts Set engine is still warm. 1 Header Pipe Spring (2pcs.) (72101272) Cylinder & Piston Assembly 4. Then, inject some after-run oil into the engine, and 4-1 2BP03000 Exhaust Seal Ring (2pcs.) (22826140) More fuel Less fuel More fuel Less fuel rotate the engine with an electric starter for 4 to 5 4-2 22016000 Piston Pin seconds to distribute the oil to all the working parts. 4-3 Piston Pin Retainer 4mm (6pcs.) 1. NEEDLE VALVE ADJUSTMENT SUPER AIR CLEANER 203 (72413000) 21817010 Note: 4-4 22425003 Connecting Rod (w/piston pin retainers 3pcs.) Run the vehicle (with throttle fully open) over the 203 Filter Element (4pcs.) (72413200) 2 longest available straight course a few times to Do not inject after-run oil into the carburetor as 5 2BP81000 Carburetor Complete Type 22E(B) SUPER AIR CLEANER 204 (72415000) 2-1 observe the model’s speed. Return the vehicle to the this may cause the O-rings inside the carburetor to 6 23981740 Carburetor Retainer Assembly deteriorate. These procedures will reduce the risks 204 Filter Element (4pcs.) (72415200) starting point and close the Needle-valve 15°and 6-1 24881824 "O" Ring (2pcs.) of starting difficulties or corrosion after a period of repeat the run, taking note of the improvement in PRESSURE CHAMBER SET 3 storage. 7 23731020 Ball Bearing (Front) performance. (71550000) 8 2BN01000 Crankcase Continue with further runs, gradually reduce the 5. Finally, when cleaning the exterior of the engine, use 4 Needle-valve setting aiming to achieve the highest methanol or a household cleaning agent. Do not use O.S. SPEED CARBURETOR REPAIR KIT 21 9 23730050 Ceramic Bearing (Rear) (71490000) straight-line speed (optimum position). gasoline, kerosene, or any petroleum based chemical C.M2.6x7 10 2BN02000 Crankshaft Remember, however, if the Needle-valve is closed too which can damage silicone fuel tubing. O.S. SPEED Carburetor Repair Parts 21 4-1 11 23107100 Cover Gasket far, the engine will overheat, accompanied by visibly (71491000) diminished exhaust smoke and the model will lose 4-3 12 2BN07000 Cover Plate O.S. SPEED OFF-ROAD 4-SHOE CLUTCH SYSTEM speed. At this point, throttle down immediately, stop Dirt and dust may lodge in marked places. 71641300 Glow Plug P3 the vehicle and reopen the Needle-valve 30~45°. (71814001) 4-2 4-4 22826140 Exhaust Seal Ring O.S. SPEED CLUTCH SHOE STANDARD(B)PL II 2. METERING NEEDLE ADJUSTMENT 12 71533261 Carburetor Reducer 6 (RED) w/ "O" Ring (2pcs.) (YELLOW) (71814330) 5 After setting the Needle-valve at optimum position, 11 71533865 Carburetor Reducer 6.5 II (RED) w/ "O" Ring (2pcs.) run the vehicle a few times at the straight line. O.S. SPEED CLUTCH SHOE HARD(B)PL 22884250 Dust Cap Set ( 3, 16, 18) 10 With the engine running, close the throttle and (BLACK) (71814340) * marked parts are available only for limited period allow it idle for about five seconds, then reopen the O.S. SPEED CLUTCH BEARING (1050ZZ 4pcs.) (one year after finishing the production). throttle fully. 9 If, at this point, the engine puffs out an excessive (71550001) 6 7 CAP SCREW SETS (10pcs./set) amount of smoke and the vehicle does not O.S. SPEED CLUTCH BEARING (1050ZZ 10pcs.) C.M2.6x18 Code No. Size Pcs. used in an engine 79871020 M2.6x7 Cover Plate Retaining Screw (4pcs.) accelerate smoothly and rapidly or even stops, it is (71550002) 8 6-1 probable that the idle mixture is too rich. In this 79871055 M2.6x18 Carburetor Retainer Retaining Screw (1pc.) case, turn the Metering needle clockwise 15~30°. O.S. SPEED CILICONE TUBE 79871180 M3x18 Cylinder Head Retaining Screw (4pcs.) If, on the other hand, the engine tends to speed up REMOVING DIRT/STAIN (72506100) 2.5mm x 1000mm momentarily and then cut out abruptly when the Dirt and stain stuck on the engine and silencer/manifold CARBURETOR PARTS LIST O.S. SPEED EXHAUST SEAL RING 21(10pcs.) throttle is opened, the idle mixture is too lean. In cause lowering heat dissipation effect. When dirt and CARBURETOR EXPLODED VIEW (22826145) No. Code No. Description this case, turn the Metering needle counter-clockwise stain are detected, remove the engine from the chassis 1 Type of screw 15~30°. and clean it with alcohol. O.S. SPEED DUST CAP SET FOR 12-30 CLASS C...Cap Screw S...Set Screw 1 2BN81430 Ball Link No.6 1-1 Retaining Screw 3. THROTTLE STOP SCREW ADJUSTMENT INATALLING DUST CAPS 3mm(2pcs.) / 16mm(2pcs.) / 18mm(1pc.) 1-1 26381501 (22884254) S.M3x3 2 2BN81520 Dust Cover If the engine runs too fast with the throttle closed, the When storing the engine, install the cap on the exhaust throttle stop screw should be turned counter-clockwise port, carburetor, etc. to prevent dust from entering the DUST CAP SET 3mm (5pcs.) (73300305) 3 23818340 Metering Needle Assembly to allow the throttle opening to be reduced. 5 engine. 3-1 27881820 "O" Ring (2pcs.) DUST CAP SET 16mm (3pcs.) (73301612) 3 5-1 OPTIMUM MIXTURE CONTROL POSITION 4 22848210 Slide Valve CHECKING THE ENGINE (3pcs.) (73301812) With the optimum mixture control position, light smoke DUST CAP SET 18mm 5 23618197 Needle Assembly If the engine will not develop normal performance after 2 3-1 is visible during high speed running and the engine rpm O.S. SPEED PISTON PIN RETAINER PLIERS 5-1 46066319 "O" Ring (2pcs.) long time running due to wearing of parts. It is suggested increase smoothly during acceleration. Carry out (71492000) 6 6 22082940 Needle Holder Assembly adjustment 1.~3. patiently until the engine responds to replace necessary parts when the following symptoms quickly and positively to the throttle control. are detected. O.S. SPEED CLUTCH WRENCH & ADJUSTER 6-1 6-1 22082950 Fuel Inlet (No.15) (71415300) Remember that, if the engine is operated with the fuel/air Engine sound changes and easily overheats. 7-1 7 22848160 Throttle Stop Screw mixture slightly too lean, it will overheat and run Power has dropped extremely. O.S. SPEED FLYWHEEL KEY (71415200) 4 7 7-1 27881820 "O" Ring (2pcs.) unevenly. As with all engines, it is advisable to set both Idle is unstable and/or engine tends to stop at idle. 8 23781600 Mixture Control Valve Assembly the needle-valve and metering needle slightly on the rich O.S. SPEED FLYWHEEL PULLER (71415100) In most cases, ball bearings, cylinder & piston assembly, 8-1 46066319 "O" Ring (L) (2pcs.) side of the best rpm setting, as a safety measure. (71520100) 8-2 connecting rod and/or crankcase have become worn. O.S. SPEED PLUG WRENCH 9 8-2 22781800 "O" Ring (S) (2pcs.) Finally, beyond the normal break-in period, a slight 8-1 Check the parts carefully and replace them if necessary. readjustment toward a leaner needle setting may be O.S. SPEED PHILLIPS SCREW DRIVER 9-1 9 2BP81100 Carburetor Body (w/Thermo Insulator) required to maintain maximum performance. No.1 (71417100) 8 9-1 2AN81101 Thermo Insulator O.S. GENUINE PARTS & ACCESSORIES Note: O.S. SPEED PHILLIPS SCREW DRIVER 10 10 29015019 Carburetor Rubber Gasket Please regard the standard positions in the O.S. GLOW PLUG No.2 (71417200) instruction manual as just a guide. Positions will P3 (71641300) P4 (71641400) P5 (71641500) vary due to the fuel and silencer used. In general, O.S. SPEED SPRING REMOVER (71415500) if a fuel containing less nitromenthane is used, the O.S. SPEED T-SERIES PLUG (24 gold-plated) THREE VIEW DRAWING Dimensions (mm) 4- 3.3 O.S. SPEED BODY REAMER (71415400) needlevalve will need to be closed further. P3 (71642720) P4 (71642730) SPECIFICATIONS Remember, closing the needlevalve too far can O.S. SPEED DRIVER TOOLS Displacement 3.49 cc / 0.213 cu.in. cause rusting and damage to the engine. CARBURETOR REDUCER Code No. Description Bore 16.27 mm / 0.641 in. 6II (71533261) 7 6 (71533260) 71410150 O.S. SPEED HEX WRENCH DRIVER 1.5 Stroke 16.80 mm / 0.661 in. 3 Attention: 6.5 (71533265) 6.5 II (71533865) 71410200 O.S. SPEED HEX WRENCH DRIVER 2.0 Output 2.68 ps / 2.64 hp / 34,000 r.p.m. It is vitally important to set the 71410250 O.S. SPEED HEX WRENCH DRIVER 2.5 Practical R.P.M. 4,000-42,000 r.p.m. throttle at the correct position 7 (71533270) 8 (71533280) 71410300 O.S. SPEED HEX WRENCH DRIVER 3.0 Weight 352 g / 12.42 oz. (Engine) before starting the engine. If 71411200 O.S. SPEED HEX BALL WRENCH DRIVER 2.0 the engine is allowed to run 8.5 (71533085) 9 (71533290) 21 with the throttle too far open 71411250 O.S. SPEED HEX BALL WRENCH DRIVER 2.5 under ''no load'' conditions MB01-75(M2000SC) EXHAUST HEADER PIPE 71412300 O.S. SPEED FLAT HEAD SCREWDRIVER 3.0 (i.e. with the driving wheels not in contact with the ASSEMBLY (72106440) 71413550 O.S. SPEED NUT DRIVER 5.5 ground) it will rapidly over-heat and may be 71413600 O.S. SPEED NUT DRIVER 6.0 MB01-80(M2002SC) EXHAUST HEADER PIPE seriously damaged. 71413700 O.S. SPEED NUT DRIVER 7.0 ASSEMBLY (72106480)

Code No. Description CARE AND MAINTENANCE MB01-85(M2004SC) EXHAUST HEADER PIPE 81.2 O.S. SPEED HEX WRENCH TIP ONLY 1.5 1. The minute particles of foreign matter, that are present in ASSEMBLY (72106910) 71414015 any fuel may, by accumulating and partially obstructing 71414020 O.S. SPEED HEX WRENCH TIP ONLY 2.0

MB01-90(M2005SC) EXHAUST HEADER PIPE O.S. SPEED HEX WRENCH TIP ONLY 2.5 8 fuel flow, cause engine performance to become erratic 71414025 UNF1/4-28 2 (72106920) and unreliable. O.S. 'Super-Filters' (large and small) are ASSEMBLY 71414030 O.S. SPEED HEX WRENCH TIP ONLY 3.0 available, as optional extras, to deal with this problem. T-2060SC WN TUNED SILENCER COMPLETE SET 71414120 O.S. SPEED HEX BALL WRENCH TIP ONLY 2.0 One of these filters installed to the pickup tube inside (72106135) 71414125 O.S. SPEED HEX BALL WRENCH TIP ONLY 2.5 15. 7 your refueling container, will prevent the entry of foreign 71414230 O.S. SPEED FLAT HEAD SCREWDRIVER TIP 3.0 material into the fuel tank. It is also recommended that a T-2090SC TUNED SILENCER COMPLETE SET 31.6 6-15 3-Chome Imagawa Higashisumiyoshi-ku 71414355 O.S. SPEED NUT DRIVER TIP ONLY 5.5 29.5 44 20.5 good in-line filter be installed between the tank and 45 Osaka 546-0003, Japan TEL. (06)6702-0225 (72106192) O.S. SPEED NUT DRIVER TIP ONLY 6.0 carburetor. 71414360 http://www.os-engines.co.jp FAX. (06)6704-2722 71414370 O.S. SPEED NUT DRIVER TIP ONLY 7.0 The specifications are subject to alteration for improvement without notice. Copyright 2019 by O.S. Engines Mfg. Co., Ltd. All rights reserved. Printed in JAPAN. 60093640 051903