Summary of NT18 0.8cc
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2 contents safety first 3 parts and equipment 5 installation 8 starting the engine 9 operating the engine 12 engine break-in 13 carburetor adjustment – overview 14 carburetor adjustment – before putting the car on the track 16 carburetor adjustment – at the track 18 fine-tuning the carburetor 19 eng...
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3 contents !! Read & understand before operating the engine !! !! Read & understand before operating the engine !! Safety first this engine is not a toy, it is a precision-manufactured machine. This machine can injure to you or other nearby, and can also damage property. It is very important to pay ...
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4 example of graphic indications: warning or caution the illustration indicates the contents of the warning or cautions. This graphic means be careful of high temperatures. Actions are prohibited the actions prohibited are indicated in or near the illustration. This graphic means do not touch. Compe...
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5 this section illustrates the parts of the nt18 engine, and also describes fuel, glowplug, and air filter that you will use in the operation of this nitro-powered engine. Parts and equipment air filter fuel inlet main needle valve idle speed screw flywheel clutch bell crankshaft crankcase low-speed...
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6 air filter do not run engine without an air filter! The air filter protects the engine from the intake of dust and other contaminants. A properly maintained air filter is essential to the life and performance of the engine. Use proper air filter oil with your air filter. The oil softens the foam e...
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7 starter box you must start the engine by first spinning the clutch flywheel. We strongly recommend using the #104300 hudy micro start-box, which is specifically designed for starting the nt18 engine. Starting & support equipment glowplug starter a glowplug starter is required to ignite the glowplu...
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8 if you break in your engine by using a propeller, never use a propeller that has any cracks, scratches, or even the slightest signs of breakage. This model engine is designed exclusively for installation into model cars. Never use it for any other purpose. It may cause personal injury or mechanica...
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9 this section describes proper starting techniques and some troubleshooting information. Safety information keep loose objects such as shirt sleeves, neckties, and scarves away from the spinning tires, flywheel, and gears. Be careful not to drop utensils such as screwdrivers and pencils into the sp...
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10 starting procedure fill up the fuel tank and "dry-start" the engine for 2-3 seconds without applying the glowplug starter, and with the carburetor in "idle" position; this primes the fuel lines and allows the fuel to reach the engine. Then apply the glowplug starter and start the engine. The engi...
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11 flooding & hydraulic lockup excess fuel in the cylinder may cause the engine to flood (by extinguishing the glowplug), or it may cause a hydraulic lockup (when excess fuel fills the cylinder above the piston, preventing the piston from moving upward). If this happens, do not try to start the engi...
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12 this section contains important engine safety operation information. Safety information – engine operation & related matters fuel is highly flammable. Always store fuel in a safe place away from any danger of sparks, excessive heat, or anything which could ignite the fuel. Mishandling fuel and fu...
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13 each engine is shipped from the factory with all carburetor settings set to a standard position. A nitro-powered engine requires careful break-in the first time the engine is used to allow the internal parts to achieve proper operating clearances. This is especially true of the piston/cylinder, c...
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14 carburetor adjustment – overview the "golden rule of carburetor adjustment" is to make only small adjustments at one time, maximum 1/8 turn (45°), especially when fine tuning. The engine is very responsible to small changes in mixture settings. The carburetor on the nt18 engine is preset at the f...
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15 1. Main needle valve the main needle valve controls the overall fuel flow to the carburetor, though its effects are particularly noticeable between ¼ and full throttle. In the situation where this setting has not been adjusted, or if you get lost with your setup, put the main needle valve to the ...
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16 main needle adjustment when the main needle is properly adjusted, the engine immediately responds to the throttle operation with clean, hard acceleration without hesitation. To check if the engine is running at a proper setting, pinch the fuel line to the carburetor and observe the results: • at ...
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17 stage 3: setting the low-speed needle open the carburetor for 2-3 seconds and let the engine clean out. Close the carburetor and let the engine idle. • if the engine idles for 2-5 seconds and then the idle rpm decreases, the engine is running too rich during idle. Lean the low speed needle (clock...
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18 carburetor adjustment – at the track you can only fine-tune the main needle setting at the track. Initially, the main needle should still be set a little rich. Fill the fuel tank, run the car up to maximum speed for a few laps, and check if it reaches top rpm without running rich towards the end ...
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19 fine-tuning the carburetor after your engine has been properly broken in and tuned at the track, be aware that changes in weather (temperature, humidity, barometric pressure), altitude, and fuel nitro content will affect the performance of the engine. See the table below for guidelines on how to ...
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20 • the engine’s compression may be low due to wear. This will make the engine difficult to start when it is warm, and may tend to stall when running and when the throttle is closed suddenly. Engine will not spin (starter box will not turn the engine): • the engine may be flooded and hydraulically ...
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21 engine care cleanliness always keep the outside of your engine clean. Fuel use clean, fresh fuel and keep your fuel can, pump, and fuel system free from dirt. Model fuel contains alcohol, which is hydrophilic (it attracts moisture from the atmosphere). If the fuel container is kept open it will a...
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22 warranty if it is necessary to clean your engine completely (such as after a crash), remove only the following: • carburetor (do not disassemble) • exhaust pipe • crankcase backplate • cylinder head flush the entire engine with fresh fuel and reassemble. Apply after-run oil to the engine and stor...
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Servicing the engine should your engine require service, please follow the following guidelines. Do not return the engine to the place of purchase, as they are not authorized or equipped to perform service. 1. Remove the engine from the model. We cannot accept equipment for service other than the en...
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24 388820 air filter body 388840 air filter foam 610001 xray nt18 0.8cc engine 611001 crankcase with bearings + carburetor retainer 611201 rear cover & gasket 611401 crankshaft 611601 blue heatsink head - cnc machined + head shim 612001 piston & sleeve set & connecting rod set 616001 carburetor 6810...
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612001 681801 616001 388820 388840 960025 681901 611601 611201 681001 611001 908275 611001 611401 nt18 engine parts 25.
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Xray model racing cars xray model racing cars p.O.Box 103, 911 50 trenČÍn, slovakia, europe p.O.Box 103, 911 50 trenČÍn, slovakia, europe phone: ++421 905 402724 phone: ++421 905 402724 support@teamxray.Com support@teamxray.Com xray model racing cars p.O.Box 103, 911 50 trenČÍn, slovakia, europe pho...