T-MAXX • 19
Filling the Fuel Tank
Use the included fuel dispensing bottle to put fuel into
the T-Maxx’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.
Fuel Tank Seal Adjustment
The rubber seal on the fuel tank is
important to the function of the engine. The fuel tank is pressurized
by the exhaust system to provide reliable fuel flow. If the tank lid
does not seal properly, an air leak will be created that can cause
your engine to run erratically and be difficult to start. If necessary,
the rubber O-ring tank seal can be adjusted for improved sealing by
tightening the screw on the underside of the tank lid.
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 (dishwashing 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,
such as that 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.
THE TRX 2.5 RACING ENGINE
11
49104-1-KC2230-R00-T-Maxx-Operating.indd 19
10/30/14 5:10 PM
