NITRO RUSTLER • 19
ThE TRx 2.5 RacING ENGINE
11
Clean your air filter after
every hour of runtime to
avoid engine damage, even
if the filter looks clean.
If you use compressed air to
dry your air filter assembly,
wear safety glasses and
avoid directing compressed
air toward your skin.
If foam filter oil is not
available, clean 30 or 40
weight motor oil can be
substituted, but is not
preferred. Never run the
engine without a properly
oiled air filter!
Filling the Fuel Tank
Use the included fuel dispensing bottle to put fuel into the
Nitro Rustler’s fuel tank. To fill the fuel bottle, squeeze
the air out, insert the dispenser tip into the fuel can,
and release your grip on the bottle. As the bottle
expands, fuel will be drawn into it.
To fill your model, flip up the spring-
loaded cap on the fuel tank, insert the
tip of the fuel bottle, and squeeze to
dispense the fuel. Fill the tank until the
fuel level reaches the base of the filler
neck. Close the fuel tank lid, making
sure it closes tightly.
ThE aIR fILTER
The TRX 2.5 Racing Engine air filter is specifically designed to deliver
maximum performance while protecting your engine from dust and dirt.
Use only the supplied filter.
You will not improve engine performance by
switching to an aftermarket filter
, and you may risk engine damage due
to poor filtration.
The TRX 2.5 Racing Engine air filter assembly consists of 3 pieces:
1. A rubber filter base
2. A plastic housing consisting of a permanently
assembled mesh cap and body
3. An oiled foam element
You must clean the filter after every hour of run time, even if the filter
looks clean.
This includes the break-in time. Clean your air filter after
break-in.
Dust (which is often too fine to see) and dirt constantly move
through the filter anytime the engine is running. Even if you can’t see dirt
on the filter, it is present inside the foam after any amount of run time.
If you exceed the recommended cleaning intervals, your engine will be
damaged. Engine damage or wear due to dirt ingestion is easy
to detect, and one of the top causes of premature engine failure.
Air Filter Cleaning Instructions
1. Remove the air filter from the
carburetor bore by pulling the
entire filter assembly firmly to
the side to release it.
Do not pull
straight up.
2. Disassemble the filter. Pull the
rubber air filter neck out of the
filter body. With the base removed,
the foam element is visible in the
bottom of the filter body. Pull out
the foam element.
3. Clean the filter parts by thoroughly washing all three pieces of the
filter assembly in hot soapy water (dish washing detergent works well).
Repeat twice.
4. Thoroughly dry the parts with a clean towel or compressed air.
Remember to wear your safety glasses when working with
compressed air.
5. Oil the foam element with foam filter oil. Use the supplied Traxxas filter
oil (part# 5263) or a high-quality, special-purpose foam filter oil like
what is used for off-road motorcycle and ATV engines. This type of filter
oil is available at motorcycle pro-shops. Apply 30 drops of the Traxxas
filter oil evenly to the top, bottom, and sides of the filter element (30
total drops divided among the 3 surfaces). Squeeze the filter element
repeatedly to help spread the oil throughout. The filter element
should be evenly colored by the oil. Even color indicates that the oil is
distributed evenly.
Do not
squeeze out excess oil.
Note: Do not use the air filter oil for anything other than the air filter.
It is not meant to be a lubricant.
6. Reassemble the filter and install it on the engine, making sure
the rubber filter neck fits securely on the carburetor with no gaps
or air leaks.
