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23

MAINTAINING THE MICRO NITRO TRUCK

To keep your micro nitro truck running at optimal performance, you should periodically perform maintenance on the truck and engine.

GENERAL TRUCK MAINTENANCE

MICRO NITRO TRUCK ENGINE MAINTENANCE

You must properly and periodically maintain your micro nitro truck engine to ensure long life and performance.

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 absorb water from the air, contaminating the 
fuel and possibly causing corrosion of the internal engine parts.

After-run Oil

After each running session, run the engine until all fuel is used up, and then disconnect the fuel line from the carburetor. Put 4-5 drops of after-run oil (Marvel Mystery Oil, Prather, 
Pacer, etc.) into the carburetor and turn the engine by hand several times to coat the internal engine parts with oil. This will protect the engine bearings and internal parts from 
corrosion. 
The use of after-run oil is also important during periods of prolonged storage (such as winter):

•  Remove the engine from the model.
•  Liberally apply oil into the carburetor and glowplug hole.
•  Wrap your engine in a soft cloth and store it in a sealed plastic bag.

Engine Disassembly

Do not dismantle your engine unnecessarily as this may upset precision fits such as piston/cylinder and crank pin/connecting rod assembly.

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 store it or re-install the engine in the model. 

Do not disassemble your engine further than described above, or your warranty may be voided!

•  Make sure all fasteners are properly tightened. Check them periodically.
•  Make sure that chassis screws do not protrude from the chassis.
•  For the best performance, it is very important that great care is taken to ensure the free movement of all parts.
•  Clean all ball-bearings so they move very easily and freely.
•  Tap or pre-thread the plastic parts when threading screws.
•  Self-tapping screws cut threads into the parts when being tightened. Do not use excessive force when tightening the self-tapping screws because you may strip out the thread 

in the plastic. We recommended you stop tightening a screw when you feel some resistance.

•  Ask your local hobby shop for any advice. Please support your local hobby shop. We at XRAY Model Racing Cars support all local hobby dealers. Therefore we ask you, if 

at all possible, to purchase XRAY products at your hobby dealer and give them your support like we do. If you have difficulty finding XRAY products, please check out www.
teamxray.com to get advice, or contact us via e-mail at info@teamxray. com, or contact the XRAY distributor in your country.

Summary of Contents for Nitro Micro NT18MT

Page 1: ...M I C R O...

Page 2: ...cts inside rotating and moving parts as this may cause damage or serious injury as your nger hair clothes etc may get caught Be sure that your operating frequency is clear before turning on or running...

Page 3: ...c oil nitro methane etc The flammability and volatility of these elements is very high so be very careful during handling and storage of nitro fuel Keep nitro fuel away from open flame sources of heat...

Page 4: ...are subject to wear If a piston liner has worn out or if the big end conrod connection has worn you must replace these parts If the engine has broken you must check that all other moving parts are sti...

Page 5: ...e onboard electronics Battery pack high quality XRAY receiver battery pack provides power to the onboard electronics Engine high performance NT18 0 8cc micro nitro engine with 2 shoe clutch provides p...

Page 6: ...AL CHARGING CYCLING THE BATTERY PACKS The receiver battery pack and starterbox battery pack must be cycled before rst time use When cycling the receiver battery pack for the rst time carefully follow...

Page 7: ...responsible for the proper use of this battery pack and any damage that may occur due to its use or misuse XRAY is not liable for any injury damage or harm caused to any person or property arising fr...

Page 8: ...CKS INSTALL ALL SHOCKS front and rear INITIAL POSITIONS Re install shock collar and spring from each shock front and rear Unthread the shock cap from the shock body and remove the shock membrane Threa...

Page 9: ...n battery pack in the truck Use only fresh alkaline or rechargeable batteries all of the same brand Make sure that rechargeable batteries are fully charged according to the manufacturer s instructions...

Page 10: ...ing Wheel Controls the left right steering of the truck XRAY RADIO SYSTEM Power Switch Turns the transmitter on or off Steering D R Dual Rate Adjusts the steering sensitivity External Charging Jack Re...

Page 11: ...tteries Receiver The radio receiver inside your truck that receives signals from the transmitter and relays them to the steering servo and throttle servo Servo Small electronic motor unit in your truc...

Page 12: ...tune the steering position if the truck does not drive straight with the steering wheel in the neutral position centered 5 Adjust the Steering Trim optional Use the throttle trim knob on the transmit...

Page 13: ...while battery is still warm After use battery retains heat Wait until it cools down before charging Disconnect and remove the battery pack if you plan to not use the start box for a period of time e...

Page 14: ...all times Follow the instructions carefully The information in this manual will help to prevent injuries to users and other as well as protecting objects from damage GRAPHIC INDICATIONS The following...

Page 15: ...wdriver A small flat blade screwdriver is required for adjusting the carburetor We recommend using high quality tools such as those offered by HUDY HANDLING NITRO FUEL Use a fuel bottle to put fuel in...

Page 16: ...er 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 engine should fire up immediatel...

Page 17: ...the flywheel to move the piston to the bottom of the cylinder BDC 7 Run the engine for several more heat cycles 5 8 minutes up to 2 3 throttle then complete cool down 5 8 minutes up to 3 4 throttle th...

Page 18: ...he right RPM Once you are satisfied that you have achieved reliable carburetor settings you are ready to put your truck on the track STAGE 2 SETTING THE IDLE SPEED Take the truck off the ground and op...

Page 19: ...onds 2 Tighten both front and rear diffs slightly by 1 16 turn 3 Run the truck again for 2 minutes at throttle 4 Tighten both front and rear diffs slightly by 1 16 turn The differential should still t...

Page 20: ...the engine running Idling Adjustment Screw Use to adjust the idle setting of the carburetor Do not allow carburetor to close to less than 1mm Adjust the servo horn mounting position for the carbureto...

Page 21: ...ou should use piston hole sizes to suit the track conditions rather than alter the oil viscosity Use only the genuine premium quality silicone shock oils The shock oils are availabe in 50ml size in th...

Page 22: ...s Less preload thinner less spacers lower ride height may give higher corner speed on high bite tracks better suited to smooth tracks More preload thicker more spacers higher ride height less prone to...

Page 23: ...r engine unnecessarily as this may upset precision fits such as piston cylinder and crank pin connecting rod assembly If it is necessary to clean your engine completely such as after a crash remove on...

Page 24: ...l with Bearings 385001 Alu Adj Ball Differential Hard Coated Set 940610 High Speed Ball Bearing 6x10x3 Rubber Sealed 2 Rear Alu Oil Shock Absorbers 2 389622 Micro Monster Truck Tire Insert Skew 4 4 38...

Page 25: ...st the carburetor settings if the weather has significantly changed since the last time you ran the engine The engine s compression may be low due to wear This will make the engine difficult to start...

Page 26: ...387542 382650 382250 930610 930610 905214 386205 382500 382090 905260 386210 906258 389170 386410 906208 906258 389103 389170 905262 389150 386400 901303 907258 386400 356400 386400 901303 388950 9610...

Page 27: ...6 388820 388840 610001 681801 388710 901304 681201 681401 681851 960025 907257 910255 970024 906258 964053 964054 388540 388531 388550 388560 388580 388516 930407 965032 930812 385002 383090 385062 93...

Page 28: ...O Box 103 911 50 Tren n Slovakia Europe Phone 421 32 7440180 info teamxray com XRAY MODEL RACING CARS P O Box 103 911 50 Tren n Slovakia Europe Phone 421 32 7440180 info teamxray com XRAY MODEL RACING...

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