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SETTing THE HigH SPEED nEEDLE VaLVE:
❑
Start the engine and remove the glow starter from the glow plug, then allow the engine to warm up for about 0 seconds.
❑
After the engine has warmed up, drive the X-Terminator 2 RTR 4WD Nitro Buggy as you normally would. If the engine seems
to be running rich (i.e., not reaching maximum power), lean the high speed needle valve about /6 of a turn (turn clockwise)
at a time until the desired setting is achieved. Always make sure that you run the engine slightly rich - you want to be able to
see a faint exhaust trail at all times.
SETTing THE LoW SPEED nEEDLE VaLVE:
❑
Start the engine and lean out the high speed needle valve as per the procedures above. Close the throttle until the engine slows down
enough so that the clutch is disengaged and the wheels don’t
turn when the X-Terminator 2 RTR 4WD Nitro Buggy is lifted from
the ground. Allow the engine to idle for about 0~5 seconds.
❑
Whilst holding the Nitro Buggy off the ground (making sure
to keep your fingers away from the moving parts), quickly open
the throttle in a short burst. If the engine just stops running as
soon as the throttle is advanced, the low speed needle valve
is too lean and the engine is not getting enough fuel. With the
engine stopped, richen the low speed needle valve about /6
of a turn (counterclockwise).
❑
Restart the engine and repeat the procedure above until
the engine will transition smoothly and quickly. Very slight
hesitation in the transition is normal.
❑
If you quickly advance the throttle and the engine seems to be very rich during transition (i.e., lots of smoke coming from the tuned
pipe and very rough sounding), the low speed needle valve is too rich and the engine is getting too much fuel. With the engine stopped,
lean the low speed needle valve about /6 of a turn (clockwise).
❑
Restart the engine and repeat the procedure above until the engine will transition smoothly and quickly. Very slight hesitation
in the transition is normal.
❑
Now drive the X-Terminator 2 RTR 4WD Nitro Buggy as you normally would for a while to get a feel for how the engine reacts to throttle.
Now that you know the proper way to tune the engine, you can make slight adjustments to the carburettor until you are satisfied with the
performance.
To keep your engine operating at peak performance there are some basic maintenance procedures that need to be performed
on the engine on a regular basis:
●
After you are finished running the engine for the day, pinch the fuel line to stop the engine. This will allow the engine to burn
any excess fuel out of the crankcase.
●
Remove the air filter element and wash it thoroughly in warm water and a small amount of liquid detergent. After it's clean, allow it to
dry, then reoil it and install it back into the air filter housing.
●
Remove the glow plug and washer from the engine and squirt several drops of high-quality after-run oil into the glow plug hole. Pull the
pull-start cord several times to distribute the oil throughout the engine, then reinstall the glow plug and washer. The after-run oil will prevent
the inside of the engine (especially the crankshaft bearings) from rusting.
KEEP iT SMooTH
Loop four nylon ZIP ties around the
corners of the engine's cylinder head,
making sure that the ratchet portion of
the ties are up toward you. When your
Nitro Buggy flips over, the ZIP ties will
prevent the cylinder head from being
scratched and gouged.
baSiC EnginE MainTEnanCE
●
Clean the outside of the engine using a heavy brush and nitro
car cleaner, then dry the engine, using a rag or compressed air.
●
Periodically check the condition of the clutch to check for wear.
●
Periodically oil the clutch bell bearings.
●
Check the engine's cylinder head bolts and backplate screws
after each day of use to ensure that they're tight. This will prevent
air leaks from causing erratic engine performance.
PLEaSE rEaD if yoU'rE USing 30% niTro fUEL
To get more power from your engine you can use fuels
containing up to 30% nitromethane. We must caution
you, though, that once you run the engine with
increased nitro you may not get satisfactory results
if you decide to go back to a lower nitro content.
Also, if you use fuels containing 30% nitro, we
suggest adding a .0mm head gasket (P/N 4848)
to lower the compression ratio. If you don’t lower the
compression ratio, overheating and erratic running
will likely occur.
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