Traxxas 4407 User Manual

MODEL 4407

owner’s manual

INTRODUCTION

3 Before You Proceed

4 Safety Precautions

5 Tools, Supplies and

Required Equipment

6 Anatomy of

the Nitro Rustler

7 Quick Start:

Getting Up
to Speed

8 Gluing the Tires

and Decorating
Your Model

9 Traxxas TQ 2.4GHz

Radio System

15 The TRX 2.5

Racing Engine

31 Driving Your Model

32 Tuning Adjustments

33 Maintaining and

Storing Your Model

35 Troubleshooting

38 TQ 2.4GHz Advanced

Tuning Guide

Thank you for purchasing the Traxxas Nitro Rustler® stadium truck.
The Nitro Rustler is equipped with the all-new TRX
that elevates its performance from Ready-To-Run to Ready-To-Race.

®

2.5 Racing Engine

®

Extremely high speed is possible once the engine has been properly
broken in. The Nitro Rustler is a serious, performance-minded
machine that incorporates race-bred suspension geometry for precise,
responsive handling. The oil-filled Ultra Shocks
for most any track surface. The Magnum 281

™

can be fine tuned

™

transmission features
smooth running ball bearings, an adjustable slipper clutch, heavy duty
gears, and a rugged planetary gear differential. A powerful disc brake
provides outstanding stopping performance.

The Nitro Rustler’s TRX 2.5 Racing Engine is one of the most powerful
engines of its size ever available in a Ready-To-Race

®

truck. Two years of
engineering development and advanced design, along with thousands
of hours of testing, puts the TRX 2.5 in a class by itself. Each part of the
TRX 2.5 - from the air filter on the slide carburetor, to the tip on the
dyno-tuned exhaust system - has been carefully engineered to provide
maximum power over the broadest RPM range.

Traxxas was the first with standard on-board electric starting.
The EZ-Start

®

is an incredibly advanced and reliable starting solution,
featuring thermal protection for the motor and built-in diagnostics
to monitor the condition of the glow plug.

We want you to feel confident that you own one of the best
performing trucks in the market and that it is backed by a team
of professionals who aim to provide the highest level of factory
support possible. Nitro Rustler is about experiencing total
performance and satisfaction, not just with your model, but also
with the company that stands behind it.

Thank you again for going with Traxxas. We work hard every day
to assure you the highest level of customer satisfaction possible.
We truly want you to enjoy your new Nitro Rustler!

Traxxas Support

Traxxas support is with you every step of the
way. Refer to the next page to nd out how to
contact us and what your support options are.

Quick Start

This manual is designed with a Quick
Start path that outlines the necessary
procedures to get your model up
and running in the shortest time possible. If you are an
experienced R/C enthusiast you will nd it helpful and fast.
Be sure and read through the rest of the manual to learn
about important safety, maintenance, and adjustment
procedures. Turn to page 7 to begin.

We know you’re excited about getting your new Nitro Rustler
on the road, but it’s very important that you take some time to
read through the Owners Manual. This manual contains all the
necessary set-up, break-in, tuning, and operating procedures that
allow you to unlock the incredible performance and adjustment
potential that Traxxas engineers designed into Nitro Rustler.

Even if you are an experienced R/C enthusiast, it’s important
to read and follow the procedures in this manual. Nitro Rustler
contains new technologies that you may not be familiar with.
Pay particular attention to the fuel and break-in requirements
for the engine. The advanced design of the TRX 2.5 Racing

Engine has a special break-in procedure that has been
developed and proven to produce the best-performing engine
possible. Using traditional or old-fashioned procedures could
reduce engine performance and longevity.

2 • Nitro Rustler

BEFORE YOU PROCEED

Carefully read and follow all instructions in this and any
accompanying materials to prevent serious damage to your
model. Failure to follow these instructions will be considered
abuse and/or neglect.

Before running your model, look over this entire manual and
examine the model carefully. If for some reason you decide it is not
what you wanted, then do not continue any further. Your hobby

dealer absolutely cannot accept a model for return or exchange
after it has been run.

Warnings, helpful hints, & cross-references

Throughout this manual, you’ll notice warnings and helpful hints
identied by the icons below. Be sure to read them!

An important warning about personal safety or avoiding
damage to your model and related components.

Special advice from Traxxas to make things easier
and more fun.

Refers you to a page with a related topic.

Support

If you have any questions about your model, or its operation,
call the Traxxas Technical Support line toll-free at:
1-888-TRAXXAS (1-888-872-9927)*

Technical support is available Monday through Friday from 8:30am
to 9:00pm central time. Technical assistance is also available at
Traxxas.com. You may also e-mail customer support with your
question at [e-mail]. Join thousands of registered
members in our online community at Traxxas.com.

Traxxas offers a full-service, on-site repair facility to handle any
of your Traxxas service needs. Maintenance and replacement
parts may be purchased directly from Traxxas by phone or online
at BuyTraxxas.com. You can save time, along with shipping
and handling costs, by purchasing replacement parts from your
local dealer.

Do not hesitate to contact us with any of your product support needs.
We want you to be thoroughly satised with your new model!

Traxxas
1100 Klein Road
Plano, Texas 75074
Phone: [phone]
Toll-free 1-888-TRAXXAS

Traxxas U.K.
P.O. Box 1128
Winterbourne, Bristol
BS36-2SH
England
Phone: [phone]

Internet
Traxxas.com
E-mail: [e-mail]

Entire contents ©2009 Traxxas.
Traxxas, EZ-Start, Smart Start,
Ready-To-Race, Ready-To-Win,
Rustler, TRX, Top Fuel, Ultra Shocks
and ProGraphix are trademarks
or registered trademarks of
Traxxas. Other brand names and
marks are the property of their
respective holders and are used
only for purposes of identication.
No part of this manual may be
reproduced or distributed in print
or electronic media without the
express written permission of
Traxxas. Specications are subject
to change without notice.

*Toll-free support is available to U.S. residents only.

Nitro Rustler • 3

SAFETY PRECAUTIONS

All instructions and
precautions outlined in this
manual should be strictly
followed to ensure safe
operation of your model.

This model is not intended
for use by children under
16 years of age without the
supervision of a responsible
and knowledgeable adult.

Previous experience with
radio controlled models is
mandatory. These models
are capable of high speeds,
requiring experienced
driving control. Models
require detailed setup,
and/or maintenance
procedures with required
support equipment.

4 • Nitro Rustler

All of us at Traxxas want you to safely enjoy your new Nitro Rustler.
Operate your Nitro Rustler sensibly and with care, and it will be exciting,
safe, and fun for you and those around you. Failure to operate your Nitro
Rustler in a safe and responsible manner may result in property damage
and serious injury. The precautions outlined in this manual should be
strictly followed to help ensure safe operation. You alone must see that
the instructions are followed and the precautions are adhered to.

IMPORTANT POINTS TO REMEMBER

Nitro Rustler is very fast! The Nitro Rustler is intended for experienced

users with a high level of skill. The TRX 2.5 Racing Engine is extremely
powerful and may require skilled driving to maintain control. Children
under 16 years of age and inexperienced drivers should not operate
the Nitro Rustler without the supervision of a responsible and
knowledgeable (experienced) adult.

Model engine fuel is dangerous and highly poisonous. Always

follow all directions and precautions printed on the fuel container.
Model engine fuel is poisonous to humans and animals. Drinking the
fuel can cause blindness and death. Handle with care and respect.

Model engine fuel, especially when in a fuel dispensing bottle, may

look like a cool drink to a child. Keep all fuel out of the reach of

children at all times. Do not place fuel containers on the ground
where children can reach them while you are driving.

Model engine fuel is ammable. Never allow smoking, sparks, heat or

ame in the presence of fuel or fuel vapors.

The engine, brakes, and exhaust system may become extremely

hot during use. Be careful not to touch the parts, especially when
refueling or stopping the engine.

Prolonged exposure to the engine exhaust can be harmful. Avoid

breathing the engine exhaust. Always run your Nitro Rustler outdoors,
in a well-ventilated area. Never run the engine indoors.

Do not operate your Nitro Rustler at night, or anytime your line of

sight to the model may be obstructed or impaired in any way.

Never operate your Nitro Rustler in crowds of people or busy

pedestrian areas. Nitro Rustler is very fast and could cause injury to
those unaware of its presence. Keep small children at a safe distance
away from the operating area.

Because Nitro Rustler is controlled by radio, it is subject to radio

interference from many sources beyond your control. Since radio
interference can cause momentary loss of control, always allow a

1

safety margin in all directions around your model to prevent collisions.

The engine can be loud. If the noise makes you uncomfortable, wear

ear protection. Be considerate of your neighbors by not running your
model early in the morning or late in the evening.

Most importantly, use good common sense at all times.

BATTERIES AND BATTERY CHARGING

Your model uses rechargeable batteries that must be handled with
care for safety and long battery life. Make sure to read and follow all
instructions and precautions that were provided with the battery
packs and your charger. It is your responsibility to charge and care for
the battery packs properly. In addition to your battery and charger
instructions, here are some more tips to keep in mind.

Use the supplied charger to charge the included battery. See

“Charging the EZ-Start Battery” on page 23.

Never leave batteries to charge unattended.

Allow the battery pack to cool off before charging.

Do not use battery packs that have been damaged in any way.

Do not use battery packs that have damaged wiring, exposed wiring,

or a damaged connector.

Children should have responsible adult supervision when charging

and handling batteries.

Only use approved chargers for NiMH battery packs (such as
Part #2921 or the Traxxas TRX Power Charger, Part #3030X). Do not
exceed the maximum charge rate of 1 amp.

Do not short-circuit the battery pack. This may cause burns and severe
damage to the battery pack

Do not burn or puncture the batteries. Toxic materials could be released.
If eye or skin contact occurs, flush with water.

Store the battery pack in a dry location, away from heat sources
and direct sunlight.

Nickel Metal Hydride batteries must be recycled or disposed
of properly.

Recycling Your Traxxas Power Cell NiMH Battery

Traxxas strongly encourages you to recycle your Power Cell battery
when it has reached the end of its useful life. Do not throw your

battery in the trash. All Power Cell battery packs display the RBRC

(Rechargeable Battery Recycling Corporation) icon, indicating they are
recyclable. To nd a recycling center near you, ask your local hobby
dealer or visit www.rbrc.org.

TOOLS, SUPPLIES AND REQUIRED EQUIPMENT

Your model comes with a set of specialty metric tools. You’ll need to purchase other items, available from your hobby dealer, to operate and maintain your model.

SUPPLIED TOOLS AND EQUIPMENT

For more information on
batteries, see Use the Right
Batteries on page 10.

Turnbuckle wrenches

1.5mm “L” wrench

NiMH 7.2V

battery pack*

U-joint wrench

2.0mm “L” wrench

NiMH battery charger*

Various pre-load spacers and shock

pistons (on parts tree) see page 32

4-way wrench

Extra glow

plug

REQUIRED TOOLS AND EQUIPMENT (sold separately)

10% quart - #5010
20% quart - #5020
33% quart - #5030
10% gallon - #5060
20% gallon - #5070
33% gallon - #5080

Traxxas Top Fuel

see page 19

™

8 AA alkaline batteries

After-run oil to protect

the engine from corrosion

Aftermarket servo

adapters

Body clips and

body washers

Fuel dispensing bottle

Small flat-blade screwdriver

for tuning (1/8 inch blade)

Glow plug and

wheel nut wrench

Foam air filter oil and extra oiled

air filter element

Extra antenna tube

see page 9

see page 20

Recommended Equipment

These items are not required
for the operation of your
model, but are a good idea to
include in any R/C toolbox:

• Safety glasses

• Thin, hobby-quality
cyanoacrylate instant tire
glue (CA glue)

• Side cutters or needle
nose pliers

Accessory Equipment (sold separately)

TRX Power Charger

Traxxas part #3030X

RX battery power pack

Traxxas part #3037

RX Wiring Harness

Traxxas part #3034

*Battery and charger style are subject to change and may vary from images.

DC car adapter for TRX Power Charger

Traxxas part #3032

Nitro Rustler • 5

ANATOMY OF THE NITRO RUSTLER

Tie Rod
(Turnbuckle

Front Camber
Link (Turnbuckle

Shock Tower

Bulkhead

Front Bumper

Receiver

Tie Bar

Chassis
(upper)

Suspension
Arm

)

Steering

Servo

Antenna

)

Pipe
Hanger

Pipe

Fuel Tank Lid

Pressure Line

Mount

Throttle/Brake
Servo

Air

Filter

Chassis

(lower)

Slipper Clutch

Spur Gear

Half Shaft

Rear Camber Link

(Turnbuckle)

Transmission

EZ-Start

Plug

Battery

Box

On/Off

Switch

Shock

(Oil Damper)

Engine

see pg. 16 for detail

s

Body
Mount

6 • Traxxas

Fuel Tank

EZ-Start Motor

Fuel Line

Header

QUICK START: GETTING UP TO SPEED

The following guide is an overview of the procedures for getting your model running. Look for the Quick Start logo on the bottom
corners of Quick Start pages.

1. Read the safety precautions on page 4 9.

For your own safety, understand where carelessness and misuse
could lead to personal injury.

Follow this procedure to make sure your radio system works properly at
a distance and that there is no interference from outside sources.

2. Charge the EZ-Start battery pack • See page 23 10.

The EZ-Start requires a fully charged battery pack (included). Use a fuel-dispensing bottle to fill the tank.

Range test the radio system • See page 13

Fill the fuel tank • See page 20

The Quick Start Guide is
not intended to replace the
full operating instructions
available in this manual.
Please read this entire
manual for complete
instructions on the proper
use and maintenance of
your model.

3. Detail the body

The Nitro Rustler body comes with most decals already applied. If you

• See page 8

11.

Connect the EZ-Start to the model • See page 24

Learn the proper way to use the EZ-Start electric starting system

wish to add more decals, do it now before you break-in your engine.

4.

Install batteries in the transmitter • See page 11

Nitro Rustler requires 4 AA alkaline or rechargeable batteries

12.

Start the engine • See page 25

Learn to use the correct starting procedure for your TRX 2.5.

for the transmitter.

5.

Install batteries in the model • See page 11

The Nitro Rustler requires 4 AA alkaline or rechargeable batteries for
the receiver.

6. I

nstall the EZ-Start battery • See page 23

13.

Break-in your engine • See pages 25-27

Follow the break-in instructions exactly to ensure the
best-performing, longest-lasting engine.

14.

Tune your engine • See page 28

Install and connect the charged battery pack in the EZ-Start controller. Learn how to set the fuel mixture needles for optimum

engine performance.

7.

Turn on the radio system • See page 12

15.

Drive your Nitro Rustler • See page 31

Make a habit of turning the transmitter on first, and off last. Driving tips and adjustments for your Nitro Rustler.

8.

Check servo operation • See page 13

Make sure the throttle, shifting, and steering servos are
working correctly.

16.

Maintaining your model • See pages 33

Follow these critical steps to maintain the performance of your
Nitro Rustler and keep it in excellent running condition.

Look for the Quick Start
logo at the bottom of
Quick Start pages.

Nitro Rustler • 7

GLUING THE TIRES AND DECORATING YOUR MODEL

Always wear safety glasses
to prevent glue from
splattering into your eyes.

The acetone in ngernail
polish remover will remove
excess glue from your ngers.

For best results while
gluing, clean the bead of
the tires and the grooves of
the wheels with denatured
alcohol before applying
glue. This removes any
mold release agent residue
from the tires and wheels,
providing a better bond.

Gluing the Tires

The factory tires on your Nitro Rustler are already glued to the rims.
The tires must be glued to the rims to prevent the rims from spinning
inside the tires. The instructions here are provided to show you how
to glue replacement tires to the rims in the future. Use CA tire glue
available from your local hobby dealer.

A

B

C

1. Remove a wheel from the Nitro Rustler
using the larger (8mm) end of the glow plug
(universal) wrench on the front wheels (A). Use
the 4-way wrench (7mm) on the rear wheels (B).

2. Use your thumb to push the side of the tire
away from the rim. Place one or two drops of
CA glue into the opening and release the tire.
Capillary action will draw the glue around the
bead of the tire (C).

3. Repeat step two at four or five points around
the rim, until the tire is completely secured
to the rim. Turn the rim over and repeat the
process for the inside of the rim/tire. Repeat for
the other 3 wheels.

4. Reinstall the wheels,
make sure none of the

Hub

axle pins have fallen out
from behind the hex
hubs (rear wheels only).

Applying the Decals

The main decals have already been
applied to your Nitro Rustler. The extra
decals provided are die-cut for easy
removal. Use a hobby knife to lift the
corner of a decal and remove it from
the backing.

Carefully position the decal over the
desired location and press one side on
the body. Pull the decal tight and use a
finger to gradually smooth out any air
bubbles as you apply the decal.

Look at the photos on the box for typical decal placement.

Axle Pin

8 • Nitro Rustler

3

TRAXXAS TQ 2.4GHz RADIO SYSTEM

INTRODUCTION

Your model includes the latest Traxxas TQ 2.4GHz transmitter with
Traxxas Link
provides instant driving fun for new R/C enthusiasts, and also offers
a full compliment of pro-level tuning features for advanced users
– or anyone interested in experimenting with the performance of
their model. The steering and throttle channels feature adjustable
Exponential, End Points, and Sub-Trims. Steering and braking Dual
Rate are also available. Many of the next-level features are controlled
by the Multi-Function knob, which can be programmed to control
a variety functions. The detailed instructions (page 38) and Menu
Tree (page 40) included in this manual will help you understand and
operate the advanced functions of the new TQ 2.4GHz radio system.
For additional information and how-to videos, visit Traxxas.com.

™

technology. The transmitter’s easy-to-use design

RADIO SYSTEM TERMINOLOGY

Please take a moment to familiarize yourself with these radio and
power system terms. They will be used throughout this manual.
A detailed explanation of the advanced terminology and features of
your new radio system begins on page 38.

2.4GHz Spread Spectrum – This model is equipped with the latest
R/C technology. Unlike AM and FM systems that require frequency
crystals and are prone to frequency conflicts, the TQ 2.4GHz system
automatically selects and locks onto an open frequency, and offers
superior resistance to interference and “glitching.”

Current - Current is a measure of power ow through the

electronics, usually measured in amps. If you think of a wire as a
garden hose, current is a measure of how much water is owing
through the hose.

Frequency band - The radio frequency used by the transmitter to

send signals to your model. This model operates on the 2.4GHz
digital spread spectrum system.

mAh – Abbreviation for milliamp hour. A measure of the capacity of

the battery pack. The higher the number, the longer the battery
will last between recharges.

Neutral position - The standing position that the servos seek when

the transmitter controls are at the neutral setting.

NiCad - Abbreviation for nickel-cadmium. The original rechargeable

hobby pack, NiCad batteries have very high
capacity, and can last up to 1000 charging cycles. Good charging
procedures are required to reduce the possibility of developing a
“memory” effect and shortened run times.

current handling, high

NiMH - Abbreviation for nickel-metal hydride. Rechargeable NiMH

batteries offer high current handling, and much greater resistance
to the “memory” effect. NiMH batteries generally allow higher
capacity than NiCad batteries. They can last up to 500 charge
cycles. A peak charger designed for NiMH batteries is required for
optimal performance.

Receiver - The radio unit inside your model that receives signals from

the transmitter and relays them to the servos.

Servo - Small motor unit in your model that operates the steering

mechanism.

Transmitter - The hand-held radio unit that sends throttle and

steering instructions to your model.

Trim - The ne-tuning adjustment of the neutral position of the

servos, made by adjusting the throttle and steering trim knobs on
the face of the transmitter. Note: The Multi Function knob must be
programmed to serve as a throttle trim adjustment.

2-channel radio system - The TQ radio system, consisting of the receiver,

the transmitter, and the servos. The system uses two channels: one to
operate the throttle and one to operate the steering.

TQ 2.4GHz RADIO SYSTEM PRECAUTIONS

For maximum range, always hold the transmitter

so the antenna is in a vertical position (pointing
straight up). The transmitter’s antenna can
be swiveled and angled to allow for a vertical
position if necessary.

Do not kink the receiver's antenna wire. Kinks in

the antenna wire will reduce range.

DO NOT CUT any part of the receiver's antenna

wire. Cutting the antenna will reduce range.

Extend the antenna wire in the model as far as possible for maximum
range. It is not necessary to extend the antenna wire out of the body,
but wrapping or coiling the antenna wire should be avoided.

Do not allow the antenna wire to extend outside the body

without the protection of an antenna tube, or the antenna wire
may get cut or damaged, reducing range. It is recommended
to keep the wire inside the body (in the antenna tube) to
prevent the chance of damage. An extra antenna tube has been
included with your model in the event that the original tube
becomes damaged.

To prevent loss of radio range
do not kink or cut the black wire,
do not bend or cut the metal tip,
and do not bend or cut the white
wire at the end of the metal tip.

Correct

Learn terms related to
the TRX 2.5 racing engine
beginning on page 17.

NoNo No

Nitro Rustler • 9

If the power indicator doesn’t
light green, check the polarity
of the batteries. Check
rechargeable batteries for
a full charge. If you see any
other ashing signal from the
LED, refer to the chart on page
39 to identify the code.

Use the Right Batteries

Your transmitter uses AA
batteries. Use new alkaline
batteries, or rechargeable
batteries such as NiMH
(Nickel Metal Hydride)
batteries in your transmitter.
Make sure rechargeable
batteries are fully
charged according to the
manufacturer’s instructions.

If you use rechargeable
batteries in your
transmitter, be aware
that when they begin
to lose their charge, they lose
power more quickly than
regular alkaline batteries.

Caution: Discontinue running
your model at the rst sign of
weak batteries (ashing red
light) to avoid losing control.

TRAXXAS TQ 2.4GHZ RADIO SYSTEM

™

Your model is equipped with the newest Traxxas 2.4 GHz transmitter with Traxxas Link.

The transmitter has two channels for controlling

your throttle and steering. The receiver inside the model has 5 output channels. Your model is equipped with two servos and a receiver.

TQ 2.4GHZ TRANSMITTER

Antenna

Multi-Function Knob

Steering
Trim

Throttle Neutral

Adjust

Steering Wheel

NITRO RUSTLER WIRING DIAGRAM

On/Off
Switch

Antenna

4-Cell
Battery Holder

Receiver

Channel 2
Throttle Servo

Throttle
Trigger

When rechargeable batteries
begin to lose their charge,
they will fade much faster
than alkaline dry cells. Stop
immediately at the rst sign
of weak batteries. Never turn
the transmitter off when the
battery pack is plugged
in. The model could run out
of control.

10 • Nitro Rustler

Power
Switch

Battery
Compartment

Set Button

Menu Button

Red/Green Status LED

see page 39 for more info

Channel 1
Steering Servo

TRAXXAS TQ 2.4GHZ RADIO SYSTEM

4-cell
battery
holder

INSTALLING TRANSMITTER BATTERIES

Your TQ 2.4GHz transmitter uses 4 AA batteries. The battery
compartment is located in the base of the transmitter.

1. Remove the battery compartment door by pressing the tab
and lifting the door up.

2. Install the batteries in the correct orientation as indicated in the
battery compartment.

3. Reinstall the battery door and snap it closed.

4. Turn on the transmitter and check the status indicator for a solid

green light.

If the status LED flashes red, the transmitter batteries may be weak,
discharged or possibly installed incorrectly. Replace with new or

*

freshly charged batteries. The
power indicator light does
not indicate the charge level
of the battery pack installed
in the model. Refer to the
Troubleshooting section on
page 39 for more information on the transmitter’s Status LED codes.

INSTALLING RECEIVER BATTERIES

T

he radio receiver in your Nitro Rustler uses four AA batteries.
The battery holder for the receiver batteries is located underneath
the battery cover on the rear bumper.

1. Remove the battery cover by removing the two body clips

from the posts.

2. Remove the battery holder and install four AA alkaline batteries.

Make careful note of the battery polarity by comparing against
the diagrams in
the battery holder.

3. Insert the battery

holder into the
battery cover.

4. Reinstall the

battery cover and
secure with the
body clips

(see sidebar!).

Direct the battery wires
through the slot in the battery
cover. If the wires are not
properly routed, they may
become broken or shorted,
causing radio system failure
and loss of control. If you use
rechargeable batteries in
your receiver, be aware that
when they begin to lose their
charge, they lose power much
more quickly than regular
alkaline batteries. Signs
of weak receiver batteries
include sluggish steering
response and shortened radio
range. Caution: Discontinue
running your Nitro Rustler at
the rst sign of weak batteries
to avoid losing control.

Traxxas TRX Power System (optional)

The optional Traxxas TRX Power System can
be purchased separately to power the radio
system in the Nitro Rustler. Benefits include the
economy of a rechargeable 5-cell nickel metal
hydride (NiMH) battery pack that replaces AA
alkaline batteries, and increased voltage for
dramatically improved servo performance. The
TRX Power Charger (Part #3030X) is a peak-

Pack (Part #3036 flat pack or #3037 hump pack) in about one hour.
The peak detection circuitry automatically shuts off the charger when
the maximum charge has been achieved. The TRX Power Charger also
includes a 7.2V adapter for charging 7.2V EZ-Start batteries. The TRX

*Always keep your Quick Reference Guide in your transmitter.

detecting unit that will charge the RX Power

Power Charger can operate on either AC or DC power. A special wiring
harness for Nitro Rustler (Traxxas part #3034) that includes a handy
external charging jack is required.

The optional DC car adapter (Part #3032) features a
tangle-free, extra long wire and integrated fuse. The
long charging cord allows the model to remain outside
the car while charging. Caution! Never charge batteries
in an enclosed car interior or while driving. Never leave
charging batteries unattended. Monitor them closely.

Traxxas’ integrated TRX Power System is the easiest way to add the
power and economy of rechargeable batteries to your Nitro Rustler.
Consult your hobby dealer for purchasing information.

If the radio system doesn’t
appear to work when the
transmitter and receiver
switches are turned on, check
for correct battery installation.

4,5

Nitro Rustler • 11

Remember, always turn the

THROTTLE TRIM

100100

00

THROTTLE TRIM

100100

00

TQ transmitter on rst and
off last to avoid damage to
your model.

Automatic Fail-Safe

The TQ 2.4GHz transmitter
and receiver are equipped
with an automatic fail­safe system that does not
require user programming.
In the event of signal loss
or interference, the throttle
will return to neutral and
the steering will hold its
last commanded position. If
Fail-Safe activates while you
are operating your model,
determine the reason for
signal loss and resolve the
problem before operating
your model again.

The Nitro Rustler’s on/off
switch does not have an
indicator plate to show
which direction is on.
However, you can tell by
looking at the wires that
come out of the switchbox.
Moving the switch towards
the gray/gray-white wires
turns the receiver on.

12 • Nitro Rustler

TRAXXAS TQ 2.4GHZ RADIO SYSTEM

TQ 2.4GHz RADIO SYSTEM CONTROLS

In order for the transmitter and receiver to bind to one another, the
receiver in the model must be turned on within 20 seconds of turning
on the transmitter. The transmitter LED will flash fast red indicating a
failure to link. If you miss it, simply turn off the transmitter and start over.

Always have the transmitter and receiver turned on before you
start the engine. Never turn the radio system off while the engine is
running. The on/off switch in the model only turns the receiver on
and off. It does not turn off the engine.

Always use new or freshly charged batteries for the radio

system. Weak batteries will limit the radio signal between the
receiver and the transmitter. Loss of the radio signal can cause
you to lose control of your model.

TQ 2.4GHz RADIO SYSTEM BASIC ADJUSTMENTS

Throttle Neutral Adjustment

The throttle neutral adjustment is located on
the transmitter face and controls the forward/
reverse travel of the throttle trigger. Change
the adjustment by pressing the button and
sliding it to the desired position. There are
two settings available:

50/50: Allows equal travel for both acceleration and reverse.
70/30: Allows more throttle travel (70%) and less reverse travel (30%).

TQ RADIO SYSTEM RULES

Always turn your TQ 2.4GHz transmitter on first and off last. This
procedure will help to prevent your model from receiving stray
signals from another transmitter, or other source, and running out
of control. Your model has electronic fail-safes to prevent this type
of malfunction, but the first, best defense against a runaway model
is to always turn the transmitter on first, and off last.

1

Always turn your

transmitter on rst.

7

2

Always turn your

receiver on second.

Then start your engine.

3

50/50 is required setting for the Nitro Rustler with TRX 2.5
Racing Engine installed.

Steering Trim

The electronic steering trim located on the face of the
transmitter adjusts the neutral (center) point of the
steering channel.

Multi-Function Knob

The Multi-Function knob can be programmed to
control a variety of functions. From the factory, the

Multi-Function knob controls steering sensitivity,
also known as exponential or “expo.” When the knob is turned
counterclockwise all the way to the left (default position), expo is
off and steering sensitivity will be linear (the most commonly used
setting). Turning the knob clockwise will “add expo” and decrease
the steering sensitivity in the initial range of steering wheel travel
left or right from center. For more detail on steering exponential,
refer to page 14.

USING THE TQ 2.4GHz RADIO SYSTEM

0°0°

The TQ 2.4GHz Radio System has been pre-adjusted at the factory.
The adjustment should be checked before running the model, in
case of movement during shipping. Here’s how:

1. Turn the transmitter switch on. The status LED on the transmitter
should be solid green (not flashing).

2. Turn on the receiver switch in the model. The switch is located
on the rear shock tower.

3. Position the Nitro Rustler so that its front wheels are off
the ground.

4. Turn the steering wheel on the transmitter back and forth and
check for rapid operation of the steering servo. Also, check that
the steering mechanism is not loose or binding. If the steering
operates slowly, check for weak receiver batteries.

5. When looking down at
model, the front wheels
should be pointing straight
ahead. If the wheels are
turned slightly to the left
or right, slowly adjust the
steering trim control on the
transmitter until they are pointing straight ahead.

6. Operate the throttle trigger on the transmitter and check for
rapid operation of the throttle servo. When the throttle trigger
is pulled back, the carburetor should open. When the throttle
trigger is pushed all the way forward, the brake should lock.

7. Once adjustments are made, turn off the receiver on your model,
followed by the hand-held transmitter.

Range-Testing the Radio System

Before each running session with your model, you should range-test
your radio system to ensure that it operates properly.

1. Turn on the radio system and check its operation as described in
the previous section.

2. Have a friend hold the model with the engine off.

3. Make sure your transmitter antenna is straight up, and then walk

away from the model with the transmitter until you reach the
farthest distance you plan to operate the model.

4. Operate the controls on the transmitter once again to be sure
that the model responds correctly.

TRAXXAS TQ 2.4GHZ RADIO SYSTEM

Nitro Rustler
Servo Operation

5. Do not attempt to operate the model if there is any problem
with the radio system or any external interference with your
radio signal at your location.

Higher Speeds Require Greater Distance
The faster you drive your model, the more quickly it will near the

limit of radio range. At 60mph, a model can cover 88 feet every
second! It’s a thrill, but use caution to keep your model in range.
If you want to see your model achieve its maximum speed, it
is best to position yourself in the middle of the truck’s running
area, not the far end, so you drive the truck towards and past
your position. In addition to maximizing the radio’s range, this
technique will keep your model closer to you, making it easier to
see and control.

No matter how fast or far you drive your model, always leave

adequate space between you, the model, and others. Never
drive directly toward yourself or others.

TQ 2.4GHz Binding Instructions

For proper operation, the transmitter and receiver must be
electronically ‘bound.’ This has been done for you at the factory.
Should you ever need to re-bind the system or bind to an additional
transmitter or receiver, follow these instructions. Note: the receiver
must be connected to a 4.8-6.0v (nominal) power source for binding
and the transmitter and receiver must be within 5 feet of each other.

1. Press and hold the transmitter’s SET button as you switch
transmitter on. The transmitter’s LED will flash red slowly.
Release the SET button

2. Press and hold the receiver’s LINK button as you switch on
the speed control by pressing the EZ-Set button. Release the
LINK button.

3. When the transmitter and receiver’s LEDs turn solid green, the
system is bound and ready for use. Confirm that the steering and
throttle operate properly before driving your model.

When the engine is running,
do not use the throttle trim
on the transmitter to adjust
the engine idle speed.
Always use the idle speed
adjustment screw (see page

16) on the carburetor.

8,9

Nitro Rustler • 13

TRAXXAS TQ 2.4GHZ RADIO SYSTEM

To prevent loss of radio range
do not kink or cut the black wire,
do not bend or cut the metal tip,
and do not bend or cut the white
wire at the end of the metal tip.

Correct

NoNo No

Steering Sensitivity (Exponential)

The Multi-Function knob on the TQ2.4GHz transmitter has
been programmed to control Steering Sensitivity (also known
as exponential). The standard setting for Steering Sensitivity is
“normal (zero exponential),” with the dial full left in its range of
travel. This setting provides linear servo response: the steering
servo’s movement will correspond exactly with the input from
the transmitter’s steering wheel. Turning the knob clockwise from
center will result in “negative exponential” and decrease steering
sensitivity by making the servo less responsive near neutral, with
increasing sensitivity as the servo nears the limits of its travel range.
The farther you turn the knob, the more pronounced the change
in steering servo movement will be. The term “exponential” comes
from this effect; the servo’s travel changes exponentially relative
to the input from the steering wheel. The exponential effect is
indicated as a percentage—the greater the percentage, the greater
the effect. The illustrations below show how this works.

Normal Steering Sensitivity (0% exponential)

In this illustration, the steering servo’s travel (and with it,
the steering motion of the model’s front wheels) corresponds
precisely with the steering wheel. The ranges are exaggerated for
illustrative purposes.

Decreased Steering Sensitivity (Negative Exponential)

By turning the Multi-Function knob clockwise, the steering
sensitivity of the model will be decreased. Note that a relatively
large amount of steering wheel travel results in a smaller amount of
servo travel. The farther you turn the knob, the more pronounced

the effect becomes. Decreased steering sensitivity may be helpful
when driving on low-traction surfaces, when driving at high speed,
or on tracks that favor sweeping turns where gentle steering inputs
are required. The ranges are exaggerated for illustrative purposes.

Turning Range

at Transmitter

Effective Turning

Range on Model

Experiment! Try varying degrees of exponential. It’s easy to go
back to “zero” if you don’t like the effect. There’s no wrong way to
adjust exponential. Any setting that makes you more comfortable with
your car’s handling is the “right setting.”

SETTING UP THE ANTENNA

The receiver antenna has been set up and
installed from the factory.

When reinstalling the antenna, rst slide the
antenna wire into bottom of antenna tube
until white tip of antenna is at top of tube
under the black cap. Next insert the antenna
tube into the mount while making sure that
antenna wire is in slot in the antenna mount.

Do not bend or kink the antenna wire! See the
side bar for more information. Do not shorten
the antenna tube.

Antenna

Tip

Antenna

Tube

Antenna

Mount

14 • Nitro Rustler

THE TRX

®

2.5 RACING ENGINE

Introduction

The TRX 2.5 Racing Engine is a specialty high-performance racing
engine. Its impressive performance is the result of years of focused
engineering development, and thousands of hours of controlled
testing and rigorous real-world running. It offers unprecedented
power and performance that turns ready-to-run into Ready-To-Race®.

The TRX 2.5 Racing Engine takes a total-system approach. Each
part of the engine, from the air filter to the exhaust tip, is carefully
engineered to work in harmony with other engine components. Each
part complements the next, to extract maximum power. The TRX 2.5
Racing Engine is designed to be tolerant of variations in tuning, and
to run successfully through a wide range of variable atmospheric
conditions such as changes in temperature, humidity, and altitude.

In order to get the longest engine life and keep the TRX 2.5 Racing
Engine in top running condition, it is very important to perform
regular routine maintenance. The number one cause of premature

engine wear and failure is lack of care and maintenance!

Break-In

The TRX 2.5 Racing Engine is manufactured to exacting tolerances
and requires a specially-designed break-in procedure to accomplish
the final precision fitting of the internal engine components. It is very
important that you follow the new break-in procedure as closely as
possible to achieve the best performance and longest life from your
TRX 2.5 Racing Engine. Engine break-in will take between one and two
hours. Old style break-in procedures, such as idling the engine on the
bench for several tanks of fuel or simply running the engine with a
very rich fuel mixture for the first 4 tanks of fuel, will not achieve the
best results. Follow the easy steps in this manual.

Air Filter Maintenance

A clean air filter is critical for long engine life. Due to the high­performance nature of the TRX 2.5 Racing Engine, a tremendous
amount of vacuum is created to move a large volume of high-velocity
air through the carburetor. Dirt is the worst enemy to your engine.
Clean the air filter after each hour of running to prevent sucking dirt
into the engine.

Traxxas strongly discourages
changing or modifying any
part of the TRX 2.5 Racing
Engine. Old tech tips and
tricks that may have boosted
the power of other engines
could seriously diminish the
performance of the
TRX 2.5 Racing Engine.

There’s more advanced
thinking, development and
testing in the stock parts of
your TRX 2.5 Racing Engine
than in many aftermarket
manufacturer’s performance
parts. The TRX 2.5 Racing
Engine is already one of the
most powerful engines in its
class and may not benefit from
average, low-tech, aftermarket
bolt on performance items.

After-Run Maintenance

Perform after-run maintenance on the engine to prevent corrosion
from building up on the internal engine components. The fuel
naturally attracts moisture and corrosion can build up very quickly
inside the engine if it is not prevented.

A few minutes spent before and after each time you run your model
will allow you to enjoy it for a long time to come. Read on for more
exciting details about your new engine.

Nitro Rustler • 15

THE TRX 2.5 RACING ENGINE

TRX 2.5 Racing Engine Illustrated

Air Filter
Housing

Head Protector

High-Speed Needle

Fuel Intake

Air Intake

Carburetor

Flywheel

Clutch

Bell

Crankshaft

Idle Speed

Screw

Throttle

Arm

Low-Speed

Needle

Head (Cylinder head)

EZ-Start

Motor

Crankcase

Pressure

Line

EZ-Start

Drive Unit

Negative

Wire

Glow Plug

Wire

Positive

Wire

EZ-Start

Plug

Ground

Wire

Fuel
Line

16 • Nitro Rustler

EZ-Start

Controller

Fuel Tank

Tuned Pipe

Exhaust

Tip

THE TRX 2.5 RACING ENGINE

Terms to Know

You’ll find these Nitro R/C engine terms throughout this section
of the manual.

.15 - .15 or “15” refers to the displacement of the engine. The TRX 2.5

Racing Engine is .15 cubic inches or 2.5 cubic centimeters (cc). The
name “TRX 2.5” is derived from the cc measurement.

ABC - Abbreviation for aluminum, brass, and chrome. Refers to engine

construction that consists of an aluminum piston that slides in a
chrome-plated brass sleeve. The TRX 2.5 uses ABC construction.

Air filter - The air filter sits atop the carburetor and prevents harmful

dust and dirt from entering the engine. Dirt ingestion is the number
one cause of premature engine failure so the engine should never be
run without the air filter in place.

BDC - Bottom dead center. The bottom-most position of the engine

piston stroke.

Break-in - Break-in is the procedure for running a brand new engine

according to specific instructions. This correctly prepares the engine
for normal running. The break-in procedure can be different for
different makes of engines. Follow the Traxxas directions for
break-in exactly.

Carb - Abbreviation for carburetor.
Carburetor - The carburetor atomizes (mixes) the fuel with the air so

that the engine can burn it. There are two types of carburetors; slide
carbs and barrel carbs. The TRX 2.5 uses the superior slide carburetor
design.

Clean-out - Cleaning-out is a condition that occurs when the engine is

accelerating and the fuel mixture becomes sufficiently lean to allow
the engine to continue into its upper rpm power band. It is usually
characterized by a noticeable decrease in blue exhaust smoke and a
dramatic increase in engine speed.

Combustion chamber - The combustion chamber is machined into the

bottom of the cylinder head. This is where the glow plug ignites the
fuel. The shape of the combustion chamber is designed to promote
more efficient burning of the fuel.

Connecting rod - The connecting rod transfers the piston motion to the

crankshaft. The TRX 2.5 Racing Engine uses a “knife-edged” connecting
rod. The aerodynamic, sharpened edges allow it to “slice” through the
pressurized air/fuel mixture inside the crankcase.

Crankcase - The engine’s “body” that contains all of the running

mechanical components.

Crankshaft - The main shaft of the engine that holds the

reciprocating assembly.

Cooling fins - The cooling fins are milled into the cylinder head and

crankcase and cause heat to be drawn away from the engine. Heat is
removed when it dissipates into the air passing across the cooling fins.
It is important to keep the fins clean of dirt and debris for maximum
cooling efficiency.

Cylinder head (head) - The finned aluminum part on top of the engine

that is responsible for dissipating most of the engine’s heat. The
combustion chamber is machined into the bottom of the head.

Dyno - Abbreviation for dynamometer. A precise piece of testing

equipment that accurately measures engine power and torque output
over the engine’s entire rpm range.

EZ-Start - Traxxas on-board electric starting system. The system consists

of a hand held starter control unit and an on-board gearbox with an
electric motor to spin the engine.

Filter foam - The oiled foam element inside the air filter housing. The

filter foam in the TRX 2.5 must be thoroughly cleaned and re-oiled
after every hour of run time.

Fit - Usually refers to the fit of the piston and sleeve. If the fit is tight,

the piston will feel very tight at top of the sleeve (top dead center),
and the engine will have good sealing and compression. If the fit is
loose, compression will be low and both the piston and sleeve should
be replaced.

Flame-out - Occurs when the engine stops running at high rpm. Usually

the fault of an excessively lean fuel mixture or glow plug failure.

Fuel - (10%, 20%, 33%) The TRX 2.5 must have model engine fuel to run.

Traxxas Top Fuel

®

is recommended. Fuel is sold in quarts and gallons
from hobby dealers. The 10%, 20% and 33% labeling refers to the
percentage of nitromethane contained in the fuel.

Fuel mixture - The ratio of fuel to air as determined by the needle

settings of the carburetor.

Fuel tubing (fuel line) - The thick silicone tubing that carries fuel from

the fuel tank to the carburetor.

Glow plug - The glow plug is located in the cylinder head at the top

of the combustion chamber. It contains an element that glows red
hot when voltage is applied. When the engine is being started,
the heat from the glow plug ignites the fuel mixture and starts the
combustion process.

Nitro Rustler • 17

THE TRX 2.5 RACING ENGINE

18 • Nitro Rustler

Glow plug driver - This tool clips onto the glow plug and supplies the

required voltage to light the glow plug element. It is also called an
igniter. EZ-Start equipped engines do not require this separate tool.

Header - The aluminum tube that connects the exhaust system to the

engine exhaust port. The length and diameter of the header must be
carefully selected to extract the most power from the engine.

High-speed needle (HSN) - Adjusts the carburetors fuel/air mixture at

high throttle openings.

Idle speed - The speed (rpm) the engine runs at when the transmitter’s

throttle trigger is at neutral.

Idle speed screw (ISS) - Located on the carburetor body. This screw

adjusts the idle rpm of the engine.

Lean - A running condition where the engine is not getting enough fuel

(for the available air). Symptoms include engine overheating, or the
engine runs for a short time and then stalls, particularly at high speed.
This is a dangerous condition that should be corrected immediately or
it can ruin your engine.

Leaning the mixture - Turning either the high-speed and/or

low-speed needle(s) clockwise to decrease the amount of fuel the
engine receives.

Low-speed needle (LSN) - Needle valve that controls the fuel mixture at

low throttle openings.

Needle valve - Valve consisting of a tapered needle that closes against a

corresponding seat to regulate fuel flow.

Nitro - Abbreviation for nitromethane, a component of model engine

fuel that improves fuel combustion and power output. Nitro also refers
to a class of R/C powered by model engines instead of electric.

Nitro content - The amount of nitromethane used in the fuel. Usually

measured as a percentage of the total fuel volume. Traxxas engines
are optimized to use 10-20% nitro. 33% nitro may be used for racing.

Nitromethane - Nitromethane is a component in the fuel that increases

power from the combustion process up to a point. Engines are
generally optimized to use a range of nitro content for the best power.

O-ring - Rubber “O”-shaped ring used as a sealing gasket.
Pipe - Abbreviation for the tuned exhaust pipe on a nitro engine. See

“Tuned Pipe”.

Piston - The piston is the internal engine part that is attached to the

upper end of the connecting rod and moves up and down in the
cylinder sleeve. The precise fit between the piston and the sleeve
creates a seal that allows the engine to have the required compression
for combustion.

Port - Ports are openings in the sleeve that allow atomized fuel to enter

the combustion chamber and burned exhaust gases to exit. The shape
and location of the ports are a large factor in controlling the engine
timing and power output.

Priming - Manually causing fuel to move from the fuel tank up to the

carburetor. This is sometimes necessary after the engine has been
sitting for a long period of time and all of the fuel has drained back to
the tank. On a Traxxas model this is done by holding your finger over
the exhaust tip for one or two seconds while the engine is starting.

Punch - A term that refers to how quickly the model responds to

throttle input or how quickly it accelerates.

Rich - A running condition where the engine is getting too much

fuel for the available air. It is better to run an engine slightly rich to
increase engine life. Excessively rich mixtures cause the engine to have
sluggish performance with exaggerated blue smoke and unburned
fuel coming from the exhaust.

rpm - Abbreviation for revolutions per minute (how many times the

engine crankshaft spins in a minute).

Sleeve - Internal engine part that contains the piston. The precise fit

between the sleeve and the piston creates a seal that allows engine
to have the required compression for combustion. The sleeve in a TRX
engine is made of brass and is then hard-chrome plated.

Slide carburetor - The throttle on a slide carburetor closes and opens

by sliding a barrel in and out of the carburetor body. This type of
carburetor is preferred for performance use because it provides a less
restrictive “straight-through” air path than the barrel carburetor design.

Stall - When the engine stops running, usually due to an incorrect fuel

mixture setting or running out of fuel.

TDC - Top dead center. The top-most position of the engine

piston stroke.

Tuned pipe - The tuned exhaust pipe usually consists of a specially-

shaped metal or composite chamber with baffles that is designed to
enhance the power output of the engine.

Wear-in - Fitment process that occurs during engine break-in where

internal engine parts develop an even more precise matched fit
through actual use under controlled circumstances.

WOT - Abbreviation for wide-open throttle.

THE TRX 2.5 RACING ENGINE

The Fuel

Use the Right Fuel

It’s imperative that you use the correct fuel in your
TRX 2.5 Racing Engine for maximum performance
and engine life. Traxxas Top Fuel
to ensure correct engine lubrication, performance,
and ease of tuning. Traxxas Top Fuel has been
proven in thousands of engines, so you can count
on it every day for great performance.

Top Fuel is the only fuel which is 100% certified for use in Traxxas engines.
Traxxas Top Fuel is made with just the right balance of the highest
grade natural and synthetic lubricants to allow excellent throttle
response and the best top-end performance, without sacrificing
long-term durability.
All of the components in the fuel are carefully selected from the
best materials available and then custom blended to match the
metallurgy and temperature characteristics of Traxxas engines.

You may use 10%, 20% or 33% nitro-content fuel. Try to use the same
percentage all the time, avoid switching back and forth between fuels.
We recommend that if you break in your engine on 20% fuel that you stick
with that percentage. If you do move to a higher or lower percentage,
make sure you readjust your fuel mixture to compensate (see below).

Choosing a Nitro Percentage

A commonly asked question is “what is the difference between 10%, 20%,
and 33% fuels?” Increasing the nitro in the fuel is almost like adding extra
oxygen to the combustion process. It burns more efficiently, improves
combustion, and delivers more power. When increased nitro is used, more
of the other fuel components are then required inside the combustion
chamber to maintain the perfect air/fuel ratio. Therefore, overall fuel
mixtures need to be richened slightly (on the high speed needle, about
3/4 of a turn counterclockwise when changing from 20% to 33%, about
1/2 of a turn counterclockwise when changing from 10% to 20%). This
allows greater fuel flow through the engine and promotes cooler running,
even at the maximum lean settings.

If 33% improves power, then it seems that the highest nitro content
available (beyond 33%) should always be used in the engine. In reality,
there are practical limitations. Engines are designed to run best within
a range of nitro percentages. How the engine is ported, the size of the
combustion chamber and other factors determine how much nitro can

®

should be used

be efficiently used in the engine. The TRX 2.5 Racing Engine responds
well to a maximum of 33% nitro, returning cool temps, more power, and
a smooth throttle response. For those who want to run higher nitro, 33%
Top Fuel is the optimum nitro percentage for the TRX 2.5 Racing Engine.
Increasing the nitro beyond 33% can introduce the need for engine
modifications (ports, head shimming, etc.) to avoid starting and tuning
difficulties. There are limits to how much nitro an engine can effectively
use to make more power. Lower nitro percentages have their own
advantages. Nitro is an expensive component in the fuel so 10% nitro
blend is more economical for the sport user. 10% also provides greater
latitude with the needle settings for easier tuning.

When using Traxxas Top Fuel, using higher nitro percentages does not
cause the engine to wear out faster. 33% Top Fuel contains the same
quality lubrication package as 10 and 20% Top Fuel. Some non-Traxxas
high-percentage nitro racing fuels do sacrifice some lubrication in
attempts to increase performance. We urge you to not take chances with
your engine investment and use Top Fuel for consistent performance and
long engine life.

What about Other Fuels?

Can other brands of fuel be used besides Top Fuel? There are other fuels
that can provide satisfactory performance; however there could be long­term costs in the form of decreased engine performance, loss of tuning
ease, and shorter engine life. Only use fuels that contain both castor and
synthetic oil.

Everyone has an opinion or a claim to make about fuel. The engineering
team at Traxxas has spent years developing TRX Racing Engines. No one
knows more about the specific fuel requirements of Traxxas engines,
than Traxxas engineers. We strongly urge you not to take chances with
your engine investment and use the Traxxas fuel made for the TRX 2.5
Racing Engine.

Handling the Fuel

Follow all directions and warnings on the fuel can.

Keep the fuel tightly capped at all times. Some components in the
fuel can evaporate very quickly and upset the balance of the fuel.
Do not store unused fuel in the fuel dispenser. Immediately return
fresh unused fuel back into the fuel can.
Do not mix old and new fuel. Never mix different fuel brands together.
Store the fuel in a cool dry location, away from any source of heat,
ignition, or combustion.
Read and follow the safety precautions on page 4 in this manual.

DANGER! Model engine fuel
is poisonous to humans and
animals. Drinking the fuel can
cause blindness and death.
Handle with care and respect.
Keep it out of reach of small
children at all times! While
driving, do not leave your
fuel dispensing bottle on the
ground where a child could
have access to it. Follow fuel
label warnings.

Nitro Rustler • 19

THE TRX 2.5 RACING ENGINE

Clean your air lter after
every hour of runtime to
avoid engine damage, even
if the lter looks clean.

If you use compressed air to
dry your air lter assembly,
wear safety glasses and
avoid directing compressed
air toward your skin.

If foam lter 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 lter!

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 spring­loaded 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.

20 • Nitro Rustler

10

THE TRX 2.5 RACING ENGINE

Start

1/8 Turn

45°

Full Turn

360°

1/2 Turn

180°

1/4 Turn

90°

3/4 Turn

270°

The Carburetor

Understanding the Carburetor adjustments

The carburetor performs several functions. It controls the engine’s
speed by restricting the intake of air and fuel into the engine. It
atomizes the fuel (suspends the fuel droplets in the air) and also
controls the air/fuel ratio of the mixture entering the engine (how
much air for a given amount of fuel).

Air

Fuel

To help provide a better understanding of engine tuning and why
it’s necessary, the following is a brief explanation of the air/fuel
combustion process that takes place inside the engine.

In order to create the cylinder pressure that results in power, the
engine burns the air/fuel mixture. Both air and fuel, in correct
amounts, are needed for proper combustion. It is the carburetor’s
job to mix the air and fuel together (atomize the fuel), in the correct
proportion for the best possible combustion. This is the ideal air/fuel
ratio. The ideal air/fuel ratio required for the engine remains roughly
constant. Due to variations in atmospheric conditions (temperature,
humidity, altitude etc.) fuel flow adjustment valves (called fuel mixture
needles) are required to meter the fuel and maintain the ideal air/
fuel ratio in these ever-changing conditions. For example, colder
air is more dense (more air molecules) for a given volume of air and

therefore requires more fuel (more fuel molecules) to maintain the
correct air/fuel ratio. Warmer air is less dense (fewer air molecules)
and therefore needs less fuel to maintain the correct air/fuel ratio. The
tuning needles are there to adjust how much fuel is made available for
the carburetor to mix with the available air (atomization).

Cold Air (More Dense)

(Warm Air) Less Dense

The Fuel Mixture Needles

The amount of fuel metered and atomized by the carburetor is
controlled by the two mixture needles, the high-speed needle and
the low-speed needle. The low-speed needle is used to meter the fuel
used by the engine at idle and low rpm (part-throttle) engine speed.
The high-speed needle is used to meter the fuel when the throttle is
open from part throttle to wide-open throttle (WOT). Two needles on
the TRX 2.5 Racing Engine provide precise control of the air/fuel ratio
across the engine’s entire rpm range.

The maximum possible fuel flow is always controlled by the high­speed needle. It works like the main water valve on a garden hose.
Turn it clockwise to close the valve, counter-clockwise to open it.
When the throttle is at idle or partially open, the low-speed needle
meters the fuel flow at the outlet (needle seat) where the fuel enters
the carburetor venturi. This second valve acts like the spray nozzle
at the end of the garden hose in our example. When you accelerate
from idle, the throttle opens and the low-speed needle is pulled
away from the needle seat. This allows more fuel to flow with the

See page 29 for more
information on how air density
affects engine tuning.

A “turn” refers to tightening
(“turning in”) or loosening
(“turning out”) mixture needles.
A “full turn” refers to turning
the needle 360°, so a “1/2 turn”
would be 180°, a “1/4 turn”
would be 90°, and so on.

Nitro Rustler • 21

Water Valve

(Controls Overall Flow)

High Speed Needle

Water Nozzle

(Controls Fine Flow)

Low Speed Needle

Richen

See Tuning Your TRX 2.5 Racing
Engine on page 28 for complete

information on adjusting the air/
fuel mixture and idle speed.

THE TRX 2.5 RACING ENGINE

Slightly lean fuel mixtures deliver stronger, more efficient
combustion and more power, but with less lubrication.

Slightly rich fuel mixtures deliver cooler running and more
lubrication but with slightly less power.

Factory Needle Settings
If your factory preset
carburetor adjustments have
been tampered with, use the
following settings:

• Set the high-speed needle to 4
turns out from closed.

• Set the low-speed needle so
the screw head (red in Fig. A) is
flush (even) with the end of the
slide (yellow in Fig. A).

Fig. A

Low Speed

Needle Adjustment

Always use the factory settings
for initial starting. Only use
these settings when the factory
settings have been lost.

Higher nitro requires a richer
fuel mixture. When running
33% fuel, richen your high
speed needle 3/4 turn if
previously running 20% nitro
and then re-tune the engine
for maximum performance.

increased air flow. As the throttle is increased, the low-speed needle
is pulled completely away from the needle seat leaving it fully open.
At that point, fuel metering is entirely controlled by the high-speed
needle. Again, using our water hose example, when the spray nozzle at
the end of our garden hose is fully open, then the main water valve can
be used to adjust how fast the water flows.

The engine’s performance is directly linked to the fuel mixture.
Richening the fuel mixture increases the amount of fuel in the air/
fuel mixture ratio and leaning the fuel mixture decreases the amount
of fuel in the air/fuel mixture ratio.

Lean

Rich

Tuning the engine means finding the perfect balance between the two;
excellent power to meet your needs while maintaining good lubrication
for long engine life. The optimal fuel mixture setting is rich to provide
a safety margin against having a lean condition if some variable
changes (such as the temperature from one day to the next).

General fuel mixture settings are measured by the number of turns
the needles are turned out from fully closed. The fuel mixture settings
have been pre-set from the factory to typical break-in settings. Do
not readjust your carburetor from the factory settings until after the
engine is started and running, and you have been able to observe the
engine running to assess what minor adjustments may be required to
compensate for fuel, temperature, and altitude. Adjustments are usually
made in 1/8 or 1/16-turn increments. If the engine sticks at TDC, see
page 37 for instructions on freeing the engine.

The Idle Speed Adjustment

The idle speed screw controls the closed position of the throttle slide.
When the throttle servo is in its neutral position, the throttle slide
should be stopped against the idle adjustment screw. Always use
the idle speed adjusting screw to control engine idle. Do not use the
throttle trim on the transmitter to adjust idle speed. The idle speed
should be set as low as possible and still maintain reliable running.

22 • Nitro Rustler

The Traxxas EZ-Start® Electric Starting System

The Traxxas EZ-Start brings the convenience of push-button electric
engine starting to your Nitro Rustler. The EZ-Start consists of a hand­held control unit and an on-board motorized starter.

Power for the EZ-Start system comes from a 7.2-volt rechargeable battery
pack installed in the hand-held control unit.

The engine glow plug is heated automatically by the EZ-Start system,
eliminating the need to keep up with a separate glow plug igniter.

The voltage to the glow plug is kept constant, regardless of the
load placed on the starter by the starter motor.

The “Glow Plug” LED (light emitting diode) on the control unit
indicates the condition of the glow plug.

The “Motor” LED indicates the status of the EZ-Start electric starter motor.

The cush drive mechanism in the drive unit prevents damage to the
gears caused by engine kickback.

Smart Start™ protection circuitry prevents damage to the motor by cutting
power if the load on the motor or other electronics exceeds safe limits.

Charging the EZ-Start Battery

The included charger can be used to charge the included battery pack.
The battery pack should be removed from the vehicle before charging.
Do not leave the battery unattended while charging.

1. Plug the charger into the wall.
The LED on the charger should

1

2

glow green.

2. Connect the included EZ-Start
battery pack to the charger
output cord. The LED will glow red
indicating the battery is charging.

3. The battery should charge for
approximately 4 ½ hours. The LED
will turn green when the battery is
fully charged.

Installing the EZ-Start Battery

1. Press the tab in the end of the battery

compartment door to open. (A)

2. Plug a fully charged

7.2-volt battery pack into
the connector inside. (B)

3. Twist the battery 2 or 3
times to twirl the battery
plug wires. This helps hold
the wire and battery in place
when the battery is installed in
the compartment. (C)

4. Install the battery into the
compartment and press the
wires securely into place.

5. Snap the battery compartment door back on and lock the end tab. (D)

3

THE TRX 2.5 RACING ENGINE

A

B

C

D

Using Other Chargers

Another convenient option for
charging the included battery
is an AC peak-detecting
charger that plugs directly
into an AC wall outlet, such as
the TRX Power Charger, Part
#3030X. It contains special
peak-detection circuitry
that automatically shuts the
charger off when the battery
is fully charged.

Caution: Never use a
15-minute timed charger to
recharge your model’s battery
packs. Overcharging may
result, causing damage to the
battery packs.

2,6

Nitro Rustler • 23

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

Motor

Glow

Plug

THE TRX 2.5 RACING ENGINE

When the EZ-Start controller
is in protection mode, wait
at least three minutes before
attempting to start the
engine, to give the starter
motor time to cool.

It’s normal for your EZ-Start
controller to become warm
after repeated use.

See page 36 for information on
clearing a flooded engine.

Using the EZ-Start

Your EZ-Start controller plugs into a 4-prong receptacle mounted on the
battery box of your Nitro Rustler. When the red button on the controller
is pressed, the EZ-Start motor begins to spin the engine and power
from the control unit heats the glow plug. Assuming all settings and
preparations are correct, the engine should start almost immediately.

Each of the two status indicator LEDs on
the hand-held control unit, the Motor
LED and the Glow Plug LED, should
light green while starting. If either LED
fails to light while starting, there is a
fault indicated with that function:

If the Glow Plug LED fails to light,
the glow plug may be bad, or the
glow plug wire may be damaged
or disconnected.

If the Motor LED fails to light and
the starter fails to operate, then the
EZ-Start is in protection mode.

Protection Mode

The EZ-Start uses Smart Start

®

technology to monitor the condition
of the system and detect failures. The controller monitors the load
being placed on the EZ-Start motor. If the load becomes excessive,
the system shuts off power to the motor to prevent costly damage
to the motor and the controller. This may occur, for example, if the
engine floods with fuel during starting. The starter spins at first but
when excessive fuel in the combustion chamber begins to lock up the
engine, the starter motor slows under the heavier load. This causes the
protection circuit to shut off the power to the motor.
Allow at least three minutes for the starter motor to cool and the
circuit to automatically reset before continuing. Use the time to find
and eliminate the condition that caused the excessive load on the
starter motor.

Use a Strong Starter Battery

A weak starter battery, or one that has not been fully charged, may
not deliver enough power to crank the engine over at the appropriate
rpm to keep the piston from sticking at top dead center (TDC). A new
engine will typically have a tight fit between the piston and the top of
the sleeve. This is a tapered fit, and a tight piston sleeve fit on initial
startup is desirable for those who want the best-performing engine.
Make sure you are using a good quality battery pack that is fully
charged (new batteries usually require several charge cycles to reach
peak voltage and full capacity). This is especially important with a new
engine that needs to be broken in. If the engine sticks at TDC, see
page 37 for instructions on freeing the engine.

24 • Nitro Rustler

11

Shutting Off The Engine

Turning off the switch for the radio will not shut off the engine. To
shut off the engine, pinch the fuel line. Squeeze the line closed to shut
off the fuel supply to the engine.

Avoid shutting off the engine by placing your finger over the exhaust
outlet, especially if you are through driving for the day. This will
leave more unburned fuel in the engine that could lead to harmful
corrosion. Always be careful not to touch the exhaust pipe after

running, it can become very hot.

Breaking in Your TRX 2.5 Racing Engine

The TRX 2.5 Racing Engine uses a ringless, aluminum-brass-chrome
(ABC) piston/sleeve construction. This type of engine design relies on
a very precise running fit between the piston and sleeve for cylinder
sealing. Engine break-in is necessary to allow the piston and sleeve

to develop an extremely precise fit and optimum cylinder sealing.
Therefore, proper engine break-in is critical to achieving the fastest,
most reliable engine performance.

1

Allow yourself about 1 to 1
procedure. The engine break-in period will take 5 tanks of fuel in a
Nitro Rustler. The break-in time is not the time to impress your friends
with your new Nitro Rustler. You must wait until the engine is fully
broken in before attempting sustained high speed running. Patience
and careful attention during break-in will reward you with the best­performing TRX 2.5 Racing Engine possible.

During break-in, your engine may appear to malfunction with symptoms
like stalling, inconsistent performance, and fouled glow plugs. These are
simply the normal “break-in pains” engines sometimes go through. They
will disappear once your engine is fully broken in. Many owners report
not experiencing any of these symptoms with TRX Racing Engines. We

recommend replacing the glow plug with a new one (included) after
the engine break in procedure. Use the supplied glow plug wrench to

remove the glow plug from the engine’s cylinder head (see page 16).

Engine Break-in Procedure

The focus during break-in is to vary and limit the engine speed. This will
be accomplished by accelerating and stopping at different rates for the
first 5 tanks of fuel. As the engine begins to break-in, the duration and
intensity of the acceleration will gradually increase. Sustained high-
speed running is not permitted until the 6th tank of fuel. Perform the
initial break-in on a large, flat, paved surface. Nitro Rustler is very fast

and by tanks 4 and 5 you will need plenty of room for the truck to run
in. Apply all throttle and braking actions gently. Abrupt acceleration or
braking could cause the engine to stall unnecessarily.

Special break-in fuels are not recommended. Use the same fuel you
plan to use everyday.
If possible, avoid breaking-in the engine on extremely hot or cold days
(see page 27).
Pay careful attention to the fuel level. Do not allow the fuel tank
to run completely empty. An extremely low fuel level causes the
mixture to run too lean. This could result in a burned glow plug or
extremely high engine temperatures.

/2 hours to complete the break-in

THE TRX 2.5 RACING ENGINE

Do not attempt to break in the TRX 2.5 Racing Engine by idling it on a
stand. This will produce poor results.
Keep extra Traxxas glow plugs handy. The break-in process can cause
deposits to form on the plug leading to plug failure.
Change or clean your air filter after break-in.
Follow the instructions exactly for each of the first 5 tanks of fuel.

Starting Your TRX 2.5 Racing Engine for the First Time

Before you start your TRX 2.5 Racing Engine for the first time, make
sure you have read all instructions and precautions in this manual. Pay

close attention to the tank-by-tank break-in instructions in the next
section, and make sure you have read and understood them before
you run your engine.

Your engine must be at room temperature (70° F or 21° C) or above the
first time you start it. If it’s cooler than room temperature outside, remove

all fuel and keep your Nitro Rustler indoors until you’re ready to start it and
then take it outside. If it’s colder than 45 degrees, special considerations
should be made. See cold weather break-in on page 27. We do not
recommend running the model in temperatures below 35 degrees.

1. Turn on the radio system (see page 12).

2. Make sure the throttle trigger on the

transmitter is in the idle (neutral) position.

3. Connect the EZ-Start controller according to
the instructions on page 24.

4. Press the starter button in short two second
bursts and watch for fuel moving through
the fuel line up to the carburetor. Watch
closely! The fuel moves very fast. If the fuel doesn’t move through the
line within 5 seconds, prime the engine by briefly (one or two seconds)
covering the exhaust outlet with your finger until the fuel is just visible
in the carburetor fuel line. Watch carefully! If the engine is primed too

long, it will flood with fuel and stop turning.

5. Once fuel reaches the carburetor, the engine should quickly start and idle.

6. Disconnect the EZ-Start controller from the model.

7. Proceed with the engine break-in.

8. Do not rev your engine with no load (wheels off the ground).

If your engine doesn’t start, refer to the troubleshooting tips beginning
on page 35 or go online to Traxxas.com/support. If your factory fuel
mixture settings have been altered, refer to page 22. If you still have
problems, contact Traxxas Customer Support at 1-888-TRAXXAS or
[e-mail].

See Important Points to
Remember on page 4 for other
precautions.

Never run your Nitro Rustler
indoors. Since the TRX 2.5
Racing Engine exhaust fumes
are harmful, always run your
model outdoors, in a well­ventilated area.

Your TRX 2.5 Racing Engine
doesn’t usually require
priming. If you do need to
prime your engine, watch the
fuel line carefully to avoid
flooding your engine. See
page 36 for information on
clearing a flooded engine.

Factory Needle Settings:
Your carburetor is preset at
the factory to give the correct
air-to-fuel ratio and idle speed
for engine break-in. Do not
adjust the carburetor unless
you observe a poor running
condition that requires
correction (see page 22 for
stock settings).

Higher nitro requires a richer
fuel mixture. When running
33% fuel, richen your high
speed needle 3/4 turn if
previously running 20% nitro
and then re-tune the engine for
maximum performance. See
page 19 for more information.

12,1 3

Nitro Rustler • 25

THE TRX 2.5 RACING ENGINE

High Altitude Operation:
If you live in a high altitude
region (5000 or more feet
above sea level), the lower air
density may require you to lean
your high-speed fuel mixture
slightly from the factory break
in settings. Try this if you are
experiencing difficult starting
or extremely sluggish engine
performance at high altitude.

As you gain experience in
the hobby, you may discover
that many people have
differing opinions on what
is the proper procedure to
break-in a model engine.

Only use the Traxxas break-in
procedure. Other break-in
procedures could result in a
weak, damaged, or otherwise
poor performing engine.

The procedure outlined
here was extensively tested
and proven to yield better
performing engines than
other “common” break-in
methods. Even if you have
years of experience using
model engines, please do not
ignore this caution!

Tank 1

1. Drive the model with the body off.

2. Driving procedure: Gently pull the throttle trigger to 1/4 throttle over
a 2-second count. Then gently apply the brake to stop. Count the

two seconds out while accelerating: one thousand one, one thousand
two, and then stop. Operate the throttle trigger as smoothly as you
can. Repeat this starting and stopping procedure until the first tank

of fuel is nearly empty.

3.

Look for thick blue smoke exiting the exhaust outlet. If there is

no smoke, richen the high-speed needle 1/4 turn, by turning the
needle counterclockwise.

4. When the fuel tank is nearly empty, shut off the engine by pinching the
fuel line connected to the carburetor (use the installed clamp).

5. Let the engine cool for 15 minutes.

Note: If at any point the engine cuts out or stalls during gentle
acceleration, richen the high-speed needle 1/4 turn by turning the needle
counterclockwise.

Tank 2

1. From tank 2 forward, Nitro Rustler should be driven with the body on.

2. Driving procedure: Gently pull the throttle trigger to 1/2 throttle over
a 2-second count. Then gently apply the brake to stop. Count the

two seconds out while accelerating: one thousand one, one thousand
two, and then stop. Repeat this starting and stopping procedure

until the second tank of fuel is nearly empty.

3. When the fuel tank is nearly empty, shut off the engine and let it cool

for 15 minutes.

Tank 3

1. Driving procedure: Gently pull the throttle trigger to 1/2 throttle over
a 3-second count. Then gently apply the brake to stop. Count the

three seconds out while accelerating: one thousand one, one thousand
two, one thousand three, and then stop. Repeat this starting and

stopping procedure until the third tank of fuel is nearly empty.

2. As the engine loosens, the idle speed may increase and cause

the model to try to creep forward when stopped. Reduce the
idle speed by turning the idle adjustment (see page 16) on the
carburetor counterclockwise.

3. When the fuel tank is nearly empty, shut off the engine and refuel.
From here on, you do not need to let the engine cool between tanks.

Tank 4

1. Driving procedure: Gently pull the throttle trigger to full throttle over
a 3-second count. Then gently apply the brake to stop. Count the

three seconds out while accelerating: one thousand one, one thousand
two, one thousand three, and then stop. Repeat this starting and

stopping procedure until the fourth tank of fuel is nearly empty.

2. Apply the throttle gradually! Your finger should not reach full throttle

until the end of the three-second count.

3. Keep your driving smooth and consistent.

4. When the fuel tank is nearly empty, shut off the engine and refuel.

Tank 5

1. Driving procedure: Gently pull the throttle trigger to full throttle over
a 3-second count, hold for 2 more seconds, and then gently apply
the brake to stop. Count the five seconds out while accelerating.
Repeat this starting and stopping procedure until the fifth tank of
fuel is nearly empty.

2.

When the fuel tank is nearly empty, shut off the engine and refuel.

Tank 6
STOP! Clean your air filter before you proceed. Refer to the instructions

on page 20. During the sixth tank of fuel, the engine can be tuned for
general performance use. Proceed to the next section in this manual
(page 28).

26 • Nitro Rustler

Tank

1
2
3
4
5

Throttle

1/4
1/2
1/2
Full
Full

Time

2 Seconds
2 Seconds
3 Seconds
3 Seconds
5 Seconds

Cool

15 Minutes
15 Minutes

-

-

-

Body

Off
On
On
On
On

Notes

Apply throttle gradually.
Apply throttle gradually.
Reduce idle speed if necessary.
Keep your driving consistent.
Accelerate over 3 second count, hold for 2 seconds.

THE TRX 2.5 RACING ENGINE

Winter Break-in Tips

During the break-in process, the piston and sleeve wear into
each other to form a precise fit. The engine needs to heat up to a
temperature around 200 to 215 degrees to allow the piston and
sleeve to achieve this fit properly. A precise fit between these
two components is critical for proper compression, and optimum
performance. If the engine runs too cold during break-in, the piston
and sleeve will not expand to their appropriate sizes for break-in, and
this can lead to premature wear of these components. This wear may
not become apparent until after winter has past, and the engine is
operated under warmer running conditions.

Warm the engine to approximately room temperature by removing
all fuel and storing the vehicle inside at room temperature until just
before starting the engine. An extremely cold engine can become
difficult to start.

After the engine is running, it is important to keep the temperature
of the engine up around 200 to 215 degrees during break-in. In
weather below 45 degrees, the TRX 2.5 Racing Engine will tend
to run at lower temperatures between 160 to 180 degrees (when
tuned at proper break-in mixture settings). This is too cool for break­in. Do not lean the fuel mixture to increase engine temperature!
This will also decrease lubrication and cause your piston/sleeve to
wear prematurely.

Wrap the cooling head with a paper
towel, clean rag or sock to help
keep the engine running around the
recommended 200 to 215 break-in
temp. If too much heat is contained,
the engine can actually run too hot.
Make sure that you monitor the
engine’s temp closely for the first
couple of tanks until you get the right
amount of cover for the cooling head. This will, of course, depend
on your current weather conditions. Adjusting the cover up and
down, exposing more or fewer cooling fins, is a convenient way to
regulate engine temps.

For owners that do not have access to a temperature probe, a drop
of water on the cooling head (around the glow plug area) should
slowly sizzle for approximately 6 to 8 seconds around 200 to 210
degrees. If the water sizzles for only a few seconds, then it is likely
that it is over 220 degrees, and needs to cool down. If the water
takes a long time or does not evaporate at all, then the engine is
too cool.

We do not recommend that you operate your engine below 35
degrees Fahrenheit. If you insist on running your vehicle below 35
degrees, be aware that nitro engines may be very difficult to start
and tune at extremely cold temperatures. Also, at temperatures
below freezing, nitro fuel can actually begin to gel up, and this can
be harmful to the engine.

Follow the remaining break-in procedures as outlined in this Owners
Manual. This, along with the steps listed above, will ensure a good
break-in for your new nitro engine, and provide many hours of
enjoyment.

Nitro Rustler • 27

When tuning for
performance, watch closely
to notice when there is no
longer any increase in speed
or power when the
high-speed mixture is lean.
If you lean the high-speed
mixture to the point that the
engine cuts-out, hesitates,
or stalls, you are well into
the danger zone and engine
damage is likely. Richen the
high-speed needle 1/4 turn
and retune.

For your convenience, the low­speed needle has a positive
stop that prevents it from
being over tightened and
damaging the needle and seat.
This also provides an easy way
to gauge how many turns out
from closed the low-speed
needle adjustment is set to.

28 • Nitro Rustler

14

THE TRX 2.5 RACING ENGINE

Tuning Your TRX 2.5 Racing Engine

The engine’s performance depends on the fuel mixture. Turn
the mixture needles clockwise to lean the fuel mixture and
counterclockwise to richen it. Leaning the fuel mixture will increase
engine power up to the engine’s mechanical limits. Never run the

engine too lean (not enough fuel flow). Never lean the engine until
it begins to cut-out or stall. Leaning the engine beyond the safe

allowable limits will result in poor performance and almost certain
engine damage. Indications of an overly lean mixture include:

Cutting out or sudden loss of power during acceleration

Overheating (temperature beyond 270° F at the glow plug).
Little or no blue smoke coming from the exhaust.

If any of these conditions are present, stop immediately and richen the
high speed mixture 1/4 turn. The engine will probably be slightly rich
at that setting and you can then retune for performance. Always tune
for performance by starting rich and moving leaner toward the ideal
setting. Never try to tune from the lean side. There should always be a
light stream of blue smoke coming from the exhaust.

Before you begin tuning, the engine should be warmed up to its
normal operating temperature and running slightly rich. All final tuning
adjustments must be made to the engine at its normal operating
temperature. You can tell the engine is running rich by noting any of the
following:

Sluggish acceleration with blue smoke coming from the exhaust.

There is unburned fuel spraying from the exhaust tip.

Leaning the high-speed fuel mixture increases performance.

High-Speed Fuel Mixture Adjustment

With the engine warm and running at a rich setting, gradually lean the
high-speed fuel mixture in 1/16 turn increments. Make several high­speed passes after each adjustment to clear out the engine and note any
change in performance. The TRX 2.5 is extremely powerful. Remember
to apply the throttle gradually to prevent wheelies or loss of control.
Continue this procedure until there is no longer any performance
improvement. If any one of the following conditions occurs, the fuel

mixture is already past the maximum safe lean setting:

There is no longer any performance improvement.

1.

The engine begins to cut out at high speed (Danger!).

2.

There is a sudden loss of power during acceleration (Danger!).

3.

The engine begins to overheat. Symptoms of overheating include:

4.

Steam or smoke coming from the engine (not exhaust).

Hesitation or stalling during acceleration.

Popping or clattering sound when decelerating (detonation).

Fluctuating idle speed.

Temperature measurement above 270° F at the glow plug

(A temperature reading above 270° alone does not necessarily

indicate overheating. Look for other symptoms of overheating
combined with temperature for a more accurate warning).

Richen the fuel mixture to the optimum setting by richening the
high-speed needle at least 1/8 turn counterclockwise and retest. This
setting will extend engine component life.

THE TRX 2.5 RACING ENGINE

Low-Speed Fuel Mixture Adjustment

The low-speed mixture is always set after the high-speed needle is
correctly adjusted. The low-speed mixture is set using the pinch test.

Once the engine is warm, do several high-speed runs to confirm

1.

that the high-speed needle is set correctly.

2. Bring the vehicle in and pinch closed the fuel line going into the
carburetor (use the engine shut-off clamp). The engine should run
for 2-3 seconds, speed up, and then shut off.

3. If the engine runs longer than 3 seconds, then lean the low-speed
needle 1/16 turn, make several more high-speed runs, and retest.

4. If the engine shuts off immediately without speeding up, then
richen the low-speed needle 1/8 turn, make several more high­speed runs, and retest.

When the low-speed needle is set correctly, the engine’s throttle
response should be very quick, even to the point of making it difficult to
keep Nitro Rustler from doing a wheelie when you accelerate!

Fuel Mixture Adjustment Chart

If the...

Humidity

Pressure (barometer)

Temperature

Altitude

Nitro %

is..

Lower

Higher

Lower

Higher

Lower

Higher

Lower

Higher

Lower

then the air density is...

Slightly more dense

Slightly less dense

Less dense

More dense

More dense

Less dense

More dense

Less dense

Higher

Idle Speed Adjustment

Once the high and low-speed mixtures have been set, reduce the idle
speed to the minimum reliable idle speed. Remember, this adjustment
should be made while the engine is running at normal operating
temperature.

Turn the throttle trim on the transmitter so the brakes are

1.

applied (note its original position). This ensures that the throttle
slide is resting against the idle adjustment screw.

2. Turn the screw counterclockwise to reduce the idle speed, or
clockwise to increase it. The idle speed should be set as low as
possible while still maintaining reliable running characteristics.

3. Reset the throttle trim on the transmitter to its original position.

adjust (correct) the
fuel mixture to be...

Slightly richer

Slightly leaner

Leaner

Richer

Richer

Leaner

Richer

Leaner

Leaner

Richer

When adjusting the low
speed fuel mixture, it is very
important to make several
high-speed runs with Nitro
Rustler between adjustments
to clear out any excess
fuel. Perform the pinch test
immediately after. If the
engine is allowed to idle
for a long period of time, it
could “load up” with fuel
and give you an inaccurate
measurement from your
pinch test.

Higher nitro requires a richer
fuel mixture. When running
33% fuel, richen your high
speed needle 3/4 turn if
previously running 20% nitro
and then re-tune the engine
for maximum performance.
See page 19 for more
information

Nitro Rustler • 29

THE TRX 2.5 RACING ENGINE

Fine-Tuning the Carburetor

After fine-tuning your TRX 2.5 Racing Engine at the end of the break­in procedure, no major adjustments to the fuel mixture are usually
necessary. Make note of the temperature, humidity, and barometric
pressure at the time you finished fine tuning your carburetor. Current
weather conditions can be found online from national websites, local
TV news websites, and television. This information will be considered
your baseline setting.

You may need to adjust your carburetor needles to compensate for
changes in temperature and barometric pressure (air density) from
day to day. Generally, you’ll need to richen the fuel mixture when the
weather is colder than your baseline temperature and the air density
is higher. Lean the fuel mixture when weather is warmer than your
baseline temperature and the air density is lower. The chart below
provides general guidelines on how weather conditions affect air
density when they move higher or lower than your baseline setting
(see page 21 for detailed info on how air density affects mixture
settings).

Tuning the Engine by Temperature

The following procedures require an
optional infrared temperature probe or
on-board temperature gauge (Traxxas
on-board digital temperature gauge,
part #4091). Engine temperature can
be used as an effective tuning aid
when you understand the relationship
between engine temperature and ambient temperature. The engine
operating temperature, when tuned for maximum performance, will
vary according to atmospheric conditions, engine load, gauge accuracy,
and many other factors. The atmospheric condition that has the most
influence on engine temperature is air temperature. Expect the engine
temperature to vary almost in direct proportion to air temperature.
Assuming you tuned the engine for the same maximum performance
each day, the engine will run about twenty degrees hotter when it’s
ninety degrees outside than it would in seventy-degree weather. For
this reason, we cannot give you a definitive temperature range that
indicates the best possible engine tuning.

There is NO optimal temperature that can be used as a target to
deliver the best engine tuning. Do not rely on a temp gauge alone to
tune your engine. Tune the engine by paying very close attention to
how it responds to changes in fuel mixture (more smoke/less smoke,
fast/sluggish, reliable/stalling, smooth sound/ muffled sound, etc).

Once the engine is tuned, then observe the temperature.

The temperature gauge can aid you in tuning by giving you a relative
indication of how your adjustments are affecting the engine and to
help prevent you from reaching excessive engine temperatures. For
example, as you lean the fuel mixture, the engine performance will
increase along with the temperature. If you continue to lean the fuel
mixture and the temperature increases but the engine performance
does not change, then you have exceeded the maximum safe lean
setting. Make note of the engine temperature. Generally, try to keep
your engine from exceeding 270° F when measured at the glow plug.
If necessary, increase airflow to the engine by cutting out the rear
of the body, windshield, and front valance. In some situations, the
engine may perform very well with no stalling, lagging, or hesitation at
temperatures above 270° F, particularly in very hot climates. If richening
the fuel mixture to bring the temperature down to 270° F results in
poor, sluggish performance (engine never cleans out) then return the
engine back to a satisfactory state of tune based on how it sounds and
performs (always with a visible stream of blue smoke coming from the
exhaust) . If engine temperature is exceeding 270° F with proper cooling
and no signs of abnormal running, then avoid running the engine at
its maximum lean setting. Watch closely for any signs of overheating.
Richen the fuel mixture slightly to provide a safety margin of additional
cooling lubrication.

Steam or smoke coming from the engine (not exhaust).

Hesitation or stalling during acceleration.

Popping or clattering sound when decelerating (detonation).

Fluctuating idle speed.

Symptoms of overheating include:

30 • Nitro Rustler

DRIVING YOUR MODEL

Introduction

Your TRX 2.5 racing engine is broken in, the fuel mixture is balanced,
and the idle is set…now it’s time to have some fun! This section
contains instructions on driving and making adjustments to your Nitro
Rustler. Before you go on, here are some important precautions to keep
in mind.

Don’t run your Nitro Rustler in water, mud, snow, or wet grass.

It’s tempting, but water and mud are easily drawn through the
air filter and will severely damage the engine. Small amounts of
moisture can cause electronics to fail and loss of control over your
Nitro Rustler.

The TRX 2.5 is extremely powerful. Remember to apply the throttle
gradually to prevent wheelies or loss of control.

Don’t hold the Nitro Rustler off the ground and rev the engine
excessively with no load on the engine. This practice could result in
internal engine damage. Avoid over-revving the engine when the
Nitro Rustler is airborne after a jump.

Avoid excessive high-speed running for extended periods of time
or over long distances. This could cause the engine to build up
enough speed to exceed maximum safe RPM limits.

Don’t drive your Nitro Rustler with drive train damage of any kind.

The engine could be damaged due to overloads on the engine
caused by drivetrain friction, or over-revving caused by loose or
missing parts.

Driving Tips

When jumping, apply some throttle while the Nitro Rustler is in
the air to keep the truck’s nose up and land level on all 4 wheels.
Be careful not to over-rev the engine or land at full throttle. Either
could seriously damage your Nitro Rustler. If the nose of the truck is
too high, then quickly tap the brake to level the truck in the air.

Change or clean your air filter element after each hour of running.
This is critical for the life of your engine. Running time includes the
engine break-in period.

Don’t tow anything with your Nitro Rustler. The engine is cooled
by airflow created by speed. Towing creates a high load on the
engine, and at the same time limits cooling of the engine due to
low vehicle speed.

If your Nitro Rustler gets stuck, stop driving immediately. Move the
vehicle and then continue driving.

Never turn off the radio system while the engine is running. The

truck could run out of control.

15

Nitro Rustler • 31

TUNING ADJUSTMENTS

0°0°

1°-2

°

1°-2

°

-1

°

-1

°

0°0°

- 1

°

- 1

°

Once you become familiar with driving your Nitro Rustler, you may
wish to make adjustments for better driving performance.

Adjusting the Camber

The camber angle of both
the front and rear wheels

Adjusting the Slipper Clutch

The Nitro Rustler features an adjustable slipper clutch on the spur
gear to help protect the drive train from sudden shock loads (such as
landing off of jumps with the engine at full throttle). Under normal
conditions the slipper clutch should not slip. Before adjusting the
slipper clutch, turn the model off. Do not adjust the slipper clutch while
the engine is running.

can be adjusted with
the camber rods (upper
turnbuckles). Use a square

Camber

or right-angle triangle
to set the camber accurately. Adjust the front wheels to 0 degrees of
camber (wheel perpendicular to the ground). In the rear, adjust the
wheels to 1 to 2 degrees of negative camber. These adjustments should

be set with the truck positioned at its normal ride height.
Use the supplied glow plug
(universal) wrench to tighten the
slipper nut (clockwise) until it stops,
and then back the nut out 1/4 of a
turn. If you notice any decrease in
performance after making changes
to the slipper clutch adjustment,
then it may be too loose. The slipper
must not be allowed to slip during
normal acceleration or the slipper
could be damaged.

Adjusting the Toe-in

Geometry and
alignment specs play

Toe

an important roll in
your truck’s handling,
so take the time to
set them correctly.
Set the steering trim
on your transmitter to neutral. Now, adjust your tie rods so that both
wheels are pointing straight ahead and are parallel to each other (0
degrees toe in). This will ensure the same amount of steering in both
directions. If you run out of adjustment, then the steering servo will
have to be re-centered (see “centering the servos” on page 34). For
increased stability add 1-2 degrees of toe in to each front wheel. Use the
turnbuckles to adjust the alignment.

Fine Tuning the Shocks

The four shocks (oil dampers) on your Nitro

Rustler have tremendous influence on its

handling. Whenever you rebuild your shocks,

or make any changes to the pistons, springs

or oil, always do it carefully and in sets (front

or rear). Piston head selection depends on

the range of oil viscosities that you have

available. For example, using a two-hole

piston with lightweight oil will give you the

same damping as a three-hole piston with

heavier oil. We recommend using two-hole

Pre-load

Spacer

pistons with a range of oil viscosities from

10W to 40W (available from your hobby shop).

The thinner viscosity oils (30W or less) flow

with less resistance and provide less damping,

while thicker oils provide more dampening.

Use only 100% pure silicone shock oil to

prolong seal life. From the factory, the Nitro Rustler uses 30W oil.

The ride height for the Nitro Rustler can be adjusted by adding or

removing the clip-on spring pre-load spacers. Note that changes in

ride height will occur when changes in shock angle or spring rates are

made. You can compensate for ride height changes by changing the

pre-load spacers on the shocks

32 • Nitro Rustler

MAINTAINING AND STORING YOUR MODEL

Your Nitro Rustler requires timely maintenance in order to stay in top
running condition. Neglecting the maintenance could allow dirt,

deposits, and moisture to build up inside the engine leading to
internal engine failure. The following procedures should be taken

very seriously.

After each hour of running:

Clean and re-oil the air filter. The instructions for this procedure are
on page 20. We cannot stress enough the value of cleaning your

air filter at the scheduled intervals. Do not neglect your air filter

maintenance!

Clean the outside of the engine of accumulated dirt, oil, and grime.
Accumulated grime will decrease the engine’s ability to cool itself.

After each running session:

Perform after-run maintenance on the engine. This clears the
engine of destructive moisture and other corrosive deposits. This

is extremely important for the life of the engine. See page 33 for
after-run maintenance procedures.

I

nspect the vehicle for obvious damage or wear. Look for:

1. Loose or missing screws

2. Cracked, bent, or damaged parts

3. Cut or loose wiring

4. Cut or kinked fuel lines

5. Signs of fuel leakage

Inspect the gears for wear, broken teeth, or debris lodged between
the teeth.

Other periodic maintenance:

Slipper clutch pegs (friction

material): The slipper clutch pegs
will wear over time and require
replacement. The life of the pegs
depends on how the slipper
clutch was adjusted and how
the Nitro Rustler was used. If the slipper will not tighten or you are
seeing signs of wear on the face of the gear, then the pegs should
be replaced

Piston/sleeve:

The life of the piston and sleeve
will vary greatly with how the engine was used
and maintained. The piston and sleeve should
be replaced when they no longer seal effectively
(loss of compression). Symptoms include the
engine being difficult to start when warm,
stalling when warm, and stalling when throttle
is suddenly closed to idle. Replace the wrist pin
and G-clip whenever the piston and sleeve are
replaced.

Connecting rod:

The connecting rod should
be replaced when the piston and sleeve are
replaced or after three gallons of fuel, whichever
comes first. Also replace the piston wrist pin and
G-clip whenever the connecting rod is replaced.
As with other internal engine components,
connecting rod life depends engine’s usage and
the quality and frequency of the engine maintenance.

EZ-Start:

The cush drive elements in the EZ-Start drive unit
should be inspected after 3-gallons of fuel. If the cush drive
elements appear deformed or hardened they should be
replaced. Inspect the EZ-Start gears for any signs of wear.
Damaged gears should be replaced. Coat the gears with a thin
layer of white lithium grease.

After-run Procedure

You must perform after-run maintenance on your Traxxas engine
whenever the model will be stored for longer than a few hours. Taking
the time to prepare your engine for storage will reward you with
longer engine life, easier starting, and better performance.

When a nitro engine is shut off, some excess unburned fuel remains in
the engine. The methanol in model engine fuel is hygroscopic, which
means it easily attracts and absorbs moisture. This moisture can cause
rust and corrosion on the steel engine parts (crankshaft, bearings,
wrist pin and starter shaft) if the fuel is not removed from the engine.
There are after run oil products available from your hobby dealer or

If the engine is worn or
damaged enough to require
replacing the piston, sleeve,
or connecting rod, consider
exchanging your old engine
for a brand new engine with
Traxxas Power-Up. It could
save you time and effort.
Details are in your model’s
documentation package.

The TRX 2.5 Racing Engine
is designed to be easy to
rebuild. Critical engine
components such as the
crankcase, crankshaft, and
engine bearings are made
to extremely high quality
standards and should under
normal circumstances outlast
multiple sets of pistons,
sleeves, connecting rods,
and wrist pins (reciprocating
assemblies). It could be
more economical for you to
continue to use your good
bearings and crankshafts,
and simply replace the
reciprocating assembly as
needed. Engine assembly is
not difficult and replacing the
reciprocating assembly does
not require any special tools
or skills.

16

Nitro Rustler • 33

MAINTAINING AND STORING YOUR NITRO RUSTLER

Denatured alcohol (available
from home centers and
paint supply stores) in a
spray bottle is an extremely
effective cleaner. Be sure
to wear safety glasses and
gloves when working with
denatured alcohol.

Be sure to follow proper
maintenance and storage
procedures to avoid damage
to your engine and other
components of your
Nitro Rustler.

Don’t put the fuel from your
tank back into your fuel
jug. Dispose of it properly,
following city or county
regulations.

Always wear eye protection
when using compressed air or
spray cleaners and lubricants.

you can use WD-40,™ a common household lubricant. To ensure your
TRX 2.5 engine is protected from internal corrosion, use the following
procedure:

1. Whenever possible, shut off the engine by pinching the fuel line
closed. This allows most of the excess fuel to be consumed by
the engine. Be sure the throttle is in the idle position. You may
have to pinch the fuel line closed for several seconds before the
engine stops.

2. Completely empty the fuel tank. Use your fuel-dispensing bottle to
suck out the old fuel. Do not mix the old fuel with your fresh fuel
supply. If you leave fuel in the tank, transporting or handling your
Nitro Rustler may cause fuel to run into the engine.

3. With the fuel tank empty and the throttle at the idle position, try
to start the engine. The engine will most likely start and run for
a few seconds as it uses up any fuel remaining in the engine and
fuel lines.

4. Once the engine stops, clean the outside of the engine with
compressed air or spray motor cleaner. Once the engine is
clean and dry, remove the glow plug power wire, glow plug,
and air filter.

5. Open the throttle fully and spray a one-second burst of WD-40 into
the carburetor and into the glow plug hole (Caution! Wear safety
glasses to prevent spray from getting into your eyes). If you are
using after-run oil, follow the manufacturer’s instructions.

6. Place a rag or paper towel over the engine to catch any WD-40 or
after-run oil that may come out the carburetor or glow plug hole.

7. Connect the EZ-Start controller to the model and spin the engine
for 10 seconds.

Centering the Servos

Whenever your radio system has been removed for service or cleaning,
the servos must be re-centered prior to installing the radio system in
the model. If the radio system is installed in the truck, disconnect the
servo horns from the servos.

1. Connect the steering servo to channel 1 on your receiver and the
throttle servo to channel 2. The black wire on each servo cable is
positioned towards the outside edge of the receiver. Connect the
red and black cable from the battery holder to the “batt” terminal on
the receiver. The red wire is positive and the black wire is negative.

2. Place fresh “AA” batteries in the transmitter and turn the power
switch on.

3. Turn the Steering Trim knob to the center position. Set the Multi­Function knob for Throttle Trim (see "Set Multi-Function knob for
THROTTLE TRIM" page 41) to center the Throttle Trim.*

4. Now install fresh “AA” batteries into the battery holder and turn the
power switch to the on position. The servos will automatically jump
to their center positions.

5. Turn off the battery holder switch followed by the transmitter. The
servos are now ready to be installed. Be careful not to move the
servo shaft when reinstalling the servo horns.

*

If throttle or steering sub-trim have been previously adjusted, they will need to be
reprogrammed to “zero.”

Do not store your model
indoors with fuel remaining
in the tank or the engine.

34 • Nitro Rustler

8. Remove the rag or paper towel and repeat steps 5–7 two
more times.

9. Clean and re-oil the air filter so it will be ready for use next time.
See page 20 for air filter maintenance instructions.

10. Replace the glow plug, reconnect the glow plug power wire, and
reinstall the air filter.

TROUBLESHOOTING YOUR NITRO RUSTLER

The following section addresses some very basic engine and radio
questions you may have about your Nitro Rustler. Most questions arise
from simple user errors or minor adjustments that are easy to correct.
If you can’t find a solution for your Nitro Rustler here, then visit our
Web site at Traxxas.com/support. There you will find a much more
extensive and detailed online troubleshooting area. In addition, you
may call Traxxas Customer Service at 1-888-TRAXXAS (outside the U.S.
call 972-265-8000).

Radio system does not work properly:

If the power light on the transmitter does not come on, check for
proper battery installation and that the batteries are new and/or fully
charged. If the power light is blinking, then the transmitter batteries
are weak and should be replaced. See page 11 for more details.

If the transmitter light is on but the radio is still not responding,
check for proper installation of the receiver batteries and that the
batteries are new and/or fully charged. Check to make sure the
on/off switch on the model is in the on position. Finally, if there is
still no response check the red and black wires that connect the
battery pack to the “batt” terminal on the receiver (you will have to
remove the receiver cover). Make sure the wires are not pinched or
damaged and that the plug is secure in the receiver. See page 11
for more details.

Short radio range:

If the radio range appears short,

transmitter so the antenna is in a vertical position (pointing
straight up). The transmitter’s antenna can be swiveled and
angled to allow for a vertical position if necessary.

Check that the antenna in the Nitro Rustler is in place and has not

been cut or damaged.

Make sure the batteries are all fresh or fully charged.

make sure to always hold the

Engine will not spin (EZ-Start will not turn the engine):

If neither LED on the controller lights, the EZ-Start battery could
be discharged or improperly connected. Inspect and recharge
if necessary.

If the glow plug LED lights and the motor LED does not, then the
EZ-Start controller is in protection mode. Allow the controller to cool
for at least three minutes. The circuitry should automatically reset.

Check to make sure the wires are connected to the EZ-Start motor
in the Nitro Rustler. The red wire should connect to the positive
motor terminal, indicated by a red dot next to the terminal.

The engine could be flooded. If too much fuel accumulates in the
combustion chamber at start up, the engine will hydraulically lock.
Follow the procedure on page 36 for clearing a flooded engine.

Check for binding at the engine flywheel. If you are not able to turn the
engine by hand, the engine could be flooded, there could be binding
in the clutch system, or there could be internal engine damage. (Note:
It is normal for the engine to be extremely tight and hard to turn when
the piston reaches the top of the compression stroke.)

Engine extremely sluggish, hard to start, and will not idle
during tank 1 of the break in:

It is possible that the factory adjusted break-in settings on your
carburetor are too rich for your geographic location, atmospheric
conditions, or fuel brand. Extremes in temperature, humidity,
barometric pressure, and altitude can’t always be accounted for
with a single high-speed needle setting. The symptoms described
above can occur when the air density is very low such as in high
mountainous elevations, and extremely cold temperatures. Under
these conditions, lean the fuel mixture slightly, 1/8 turn, to see if
there is any improvement in starting and idling. Only lean the fuel
mixture just until the engine will run and idle reliably and then
proceed with the break in.

If you are still experiencing short range, try a different location.

Sometimes there can be interference from various sources that can
cause your radio to malfunction.

The contents of different brands of fuel (other than Traxxas Top Fuel®)
in combination with extreme atmospheric conditions can also make
the factory preset break-in settings too rich and cause the symptoms
described above. Again, try leaning the fuel mixture slightly, 1/8 turn,
to see if there is any improvement in starting and idling.

Nitro Rustler • 35

TROUBLESHOOTING YOUR NITRO RUSTLER

Engine spins but will not start:

If the engine is spinning but will not start, first check to make sure

that both the motor and glow plug LEDs on the EZ-Start controller
light when the button is depressed. If the glow plug LED does not
light, make sure the blue glow plug wire is tightly connected and is
not damaged in any way. If the wire is good, then replace the glow
plug. It is normal for glow plugs to require periodic replacement.
Only use Traxxas heavy-duty long glow plugs (see your parts list).

Check your fuel mixture settings. It may be necessary to adjust the
fuel mixture if the outside temperature or barometric pressure has
changed significantly since the last time the engine was run (see
Fine Tuning the Carburetor on page 30). Turn the high-speed needle
out (rich/counterclockwise) 1/4 turn, hold the throttle trigger at
about 1/2 throttle and try again to start the engine. Once started,
retune the engine for performance (see page 28).

Check to make sure the fuel is getting to the carburetor. Remove the
fuel line where it connects to the carburetor to see if there is fuel in
it. If not, you may need to prime the engine. Reconnect the fuel line
and then refer to page 25 for instructions on priming the engine.

The engine could be worn. If the fit between the piston and sleeve

is loose, compression is reduced and the engine will be difficult
to start when it is warm, and may tend to stall when running and
when the throttle is closed suddenly to idle. Engine life depends
on many factors including fuel type, air filter maintenance, needle
settings, and how the engine was used. For example, if the engine
was allowed to ingest dirt from lack of air filter maintenance or
running through water, then the internal engine components could
wear out extremely fast.

Glow plug may have failed. If using an EZ-Start, check to see if the

glow plug light is on during starting. If not, replace the glow plug. If
using a glow ignitor, remove and check the glow plug.

speed needle at least 1/4 turn and then retune the engine for
performance (see page 28).

If the fuel mixture seems to be set correctly, make sure the fuel is
fresh. If the fuel is old, or was left uncapped for a long period, then
some of the important fuel components could have evaporated. Try
new, fresh, Traxxas Top Fuel

®

.

Try a new Traxxas glow plug. Sometimes a glow plug will work well

enough to start the engine but not be able to deliver the engine’s
full performance potential.

Check to make sure there is no binding in the driveline that would

cause excessive loads on the engine.

Clearing a Flooded Engine

If the engine is primed for too long during startup, then it can become
flooded with fuel. When the engine is flooded it will no longer turn
due to excess fuel in the combustion chamber preventing upward
movement of the piston. Use the following procedure to clear a
flooded engine:

1. Remove the blue glow plug wire.

2. Remove the glow plug and gasket with the glow plug wrench

supplied with your model. A 5/16 or 8mm nut driver will also work.

3. Turn the model upside down and plug in the EZ-Start controller.

4. Push the EZ-Start button for several seconds to clear the engine

of excess fuel. Do not look into the glow plug hole while the
engine is spinning or you could spray fuel into your face!

5. Turn the model over and reinstall the glow plug and gasket.

6. Reconnect the blue glow plug wire to the glow plug.

36 • Nitro Rustler

Engine performance sluggish:

Engine performance depends mostly on the fuel mixture settings

and how they compensate for the current atmospheric conditions.
Before you suspect other failures with the engine, richen the high-

7. Reconnect the EZ-Start controller.

8. Do not prime the engine. Pull the throttle to 1/2 throttle and push

the EZ-Start button. The engine should start immediately.

Piston stuck at “top dead center” (TDC)

“Top dead center” is the position where the piston is at the very top
of the tapered sleeve. Occasionally an engine can get “stuck” at this
position. This is most likely to happen on new engines during break-in,
but can also happen at other times. If the engine is stuck at TDC, use
the following procedure to release the piston from the sleeve:

TROUBLESHOOTING YOUR NITRO RUSTLER

1. Remove the glow plug using the included tool or 8mm (5/16”) nut
driver and verify that the piston is at the top of its stroke.

2. Use a flat blade screwdriver to rotate the flywheel. Place the
blade of the driver into one of the grooves of the flywheel and
push down, turning the flywheel counter-clockwise when viewed
from the front. The flywheel should turn, unsticking the piston
from the sleeve.

3. Put two or three drops of light machine oil into the glow plug hole
to lubricate the piston and sleeve. Do not use too much oil. It will
hydro-lock the engine. Verify the starter will spin the engine with
the glow plug out.

4. Rotate the flywheel so the piston is at bottom dead center
and replace the glow plug with gasket. Reconnect the blue
glow plug wire.

5. You should now be able to start the engine with the EZ-Start.

If you have questions or need technical assistance, call Traxxas at

1-888-TRAXXAS

(1-888-872-9927) (U.S. residents only)

Top Dead Center

Bottom Dead Center

Nitro Rustler • 37

TQ 2.4GHz ADVANCED TUNING GUIDE

Starting Over:

Restoring Factory Defaults

When programming your

2.4GHz transmitter, you may
feel the need to start over with
a clean slate. Follow these
simple steps to restore the
factory settings:

1. Turn transmitter off.

2. Hold both MENU and SET.

3. Turn transmitter on.

4. Release MENU and SET. The
transmitter LED will blink red.

5. Press MENU three times.
LED will blink red 4 times
repeatedly.

6. Press SET to clear settings.
The LED will turn solid
green and the transmitter is
restored to default.

Throttle Trim Seek Mode

When the Multi-Function knob is
set to throttle trim, the transmitter
remembers the throttle trim
setting. If the throttle trim knob
is moved from the original
setting while the transmitter is
off, or while the transmitter was
used to control another model,
the transmitter ignores the
actual position of the trim knob.
This prevents the model from
accidentally running away. The
LED on the face of the transmitter
will rapidly blink green and the
throttle trim knob (Multi-Function
knob) will not adjust the trim until
it is moved back to its original
position saved in memory. To
restore throttle trim control,
simply turn the multi-function
knob either direction until the LED
stops blinking.

38 • Nitro Rustler

Your Traxxas transmitter has a programmable

Multi-Function knob
that can be set to control various advanced transmitter functions
(set to

Steering Sensitivity by default, see page 14). Accessing the

programming menu is done by using the menu and set buttons on the
transmitter and observing signals from the LED. An explanation of the
menu structure follows on page 40. Experiment with the settings and
features to see if they can improve your driving experience.

Throttle Sensitivity (Throttle Exponential)

The Multi-Function knob can be set to control Throttle Sensitivity.
Throttle Sensitivity works the same way as Steering Sensitivity as
described on page 14, but applies the effect to the throttle channel.
Only forward throttle is affected; brake/reverse travel remains linear
regardless of the Throttle Sensitivity setting.

Steering Percentage (Dual Rate)

The Multi-Function knob can be set to control the amount (percentage)
of servo travel applied to steering. Turning the Multi-Function knob
fully clockwise will deliver maximum steering throw; turning the knob
counter-clockwise reduces steering throw (note: turning the dial
counter-clockwise to its stop will eliminate all servo travel). Be aware
that the steering End Point settings dene the servo’s maximum
steering throw. If you set Steering Percentage to 100% (by turning the
Multi-Function knob fully clockwise), the servo will travel all the way
to its selected end point, but not past it. Many racers set Dual Rate so
they have only as much steering throw as they need for the track’s
tightest turn, thus making the car easier to drive throughout the rest of
the course. Reducing steering throw can also be useful in making a car
easier to control on high-traction surfaces, and limiting steering output
for oval racing where large amounts of steering travel are not required.

Braking Percentage

The Multi-Function knob may also be set to control the amount of brake
travel applied by the servo in a nitro-powered model. Electric models do
not have a servo-operated brake, but the Braking Percentage function
still operates the same way in electric models. Turning the Multi­Function knob full clockwise will deliver maximum brake throw; turning
the knob counter-clockwise reduces brake throw (Note: Turning the dial
counter-clockwise to its stop will eliminate all brake action).

Throttle Trim

Setting the Multi-Function knob to serve as throttle trim will allow you
to adjust the throttle’s neutral position to prevent unwanted brake drag
or throttle application when the transmitter trigger is at neutral. Note:
Your transmitter is equipped with a Throttle Trim Seek mode to prevent
accidental runaways. See the sidebar for more information.

Steering and Throttle End Points

The TQ 2.4GHz transmitter allows you to choose the limit of the servo’s
travel range (or its “end point”) independently for left and right travel
(on the steering channel) and throttle/brake travel (on the throttle
channel). This allows you to ne-tune the servo settings to prevent
binding caused by the servo moving steering or throttle linkages (in the
case of a nitro car) farther than their mechanical limits. The end point
adjustment settings you select will represent what you wish to be the
servo’s maximum travel; the Steering Percentage or Braking Percentage
functions will not override the End Point settings.

Steering and Throttle Sub-Trim

The Sub-Trim function is used to precisely set the neutral point of the
steering or throttle servo in the event that simply setting the trim knob
to “zero” does not completely center the servo. When selected, Sub-Trim
allows ner adjustment to the servo output shaft’s position for precise
setting of the neutral point. Always set the Steering Trim knob to zero
before making nal adjustment (if required) using Sub-Trim. If Throttle
Trim has been previously adjusted, the Throttle Trim will need to be
reprogrammed to “zero” before making nal adjustment using Sub-Trim.

Setting Lock

Once you’ve adjusted all of these settings the way you like them, you
may want to disable the Multi-Function knob so none of your settings
can be changed. This is especially handy if you operate multiple vehicles
with a single transmitter via Traxxas Link.

Multiple Settings and the Multi-Function Knob

It is important to note that settings made with the Multi-Function
knob are “overlaid” on top of each other. For example, if you assign the
Multi-Function to adjust Steering Percentage and set it for 50%, then
reassign the knob to control Steering Sensitivity, the transmitter will
“remember” the Steering Percentage setting. Adjustments you make
to Steering Sensitivity will be applied to the 50% steering throw setting
you selected previously. Likewise, setting the Multi-Function knob to
“disabled” will prevent the knob from making further adjustments, but
the last setting of the Multi-Function knob will still apply.

TRAXXAS LINK

Traxxas Link is an exclusive, patent-pending feature of the TQ 2.4GHz
transmitter. Each time the transmitter is bound to a new receiver, it
saves that receiver in its memory along with all the settings assigned
to that receiver. When the transmitter and any bound receiver are
switched on, the transmitter automatically recalls the settings for that
receiver. There is no need to manually select your vehicle from a list of
model memory entries.

TQ 2.4GHz ADVANCED TUNING GUIDE

Model Lock

The Traxxas Link feature can store up to twenty models (receivers) in its
memory. If you bind a twenty-rst receiver, Traxxas Link will delete the
“oldest” receiver from its memory (in other words, the model you used
the longest time ago will be deleted). Activating Model Lock will lock
the receiver in memory so it cannot be deleted.

You may also bind multiple Traxxas Link transmitters to the same
model making it possible to pick up any transmitter and any previously
bound model in your collection and simply turn them on and drive.
With Traxxas Link, there is no need remember which transmitter goes
with which model and there is never a need to have to select any model
from a list of model memory entries. The transmitter and receiver do it
all for you automatically.

To activate Model Lock:

1. Switch on the transmitter and receiver you wish to lock.

2. Press and hold MENU. Release when the status LED blinks green.

3. Press MENU three times. The status LED will blink green four
times repeatedly.

5. Press SET once. The status LED will blink red once repeatedly.

6. Press MENU once, the LED will blink red twice repeatedly.

7. Press SET, the LED will blink rapidly green. The memory is now locked.
Press MENU and SET to return to driving mode.

Note: To unlock a memory, press SET twice at step 5. The LED will

blink rapidly green to indicate the model is unlocked. To unlock all
models, press MENU twice at step 6 and then press SET.

To delete a model:

At some point, you may wish to delete a model you no-longer drive
from the memory.

1. Switch on the transmitter and receiver you wish to delete.

2. Press and hold MENU. Release when the status LED blinks green.

3. Press MENU three times. The status LED will blink green four
times repeatedly.

4. Press SET once. The status LED will blink green once repeatedly.

5. Press MENU once. The status LED will blink green twice repeatedly.

6. Press SET. The memory is now selected to be deleted. Press SET to
delete the model. Press and hold MENU to return to driving mode.

4. Press SET. The status LED will blink green in single-ash intervals.

TRANSMITTER LED CODES

LED Color / Pattern Name Notes

Solid green Normal Driving Mode See page 12 for information on how to use your transmitter controls.

Slow red (0.5 sec on / 0.5 sec off) Binding See page 13 for more information on binding.

Flashing fast green (0.1 sec on / 0.15 sec off) Throttle Trim Seek Mode

Flashing medium red (0.25 sec on / 0.25 sec off) Low Battery Alarm Put new batteries in the transmitter. See page 11 for more information.

Flashing fast red (0.125 sec on / 0.125 sec off) Link Failure / Error

Programming Patterns

or

Counts out number (green or red) then pauses Current menu position See Menu Tree for more information.

x

Fast green 8 times Menu setting accepted (on SET)

8

Fast red 8 times Menu SET invalid User error such as trying to delete a locked model.

x

8

Turn the Multi Function knob right or left until the LED stops ashing.
See page 38 for more information.

Transmitter and receiver are no longer bound. Turn the system off and then
back on to resume normal operation. Find source of the link failure (ie out of
range, low batteries, damaged antenna).

RECEIVER LED CODES

LED Color / Pattern Name Notes

Solid green Normal Driving Mode See page 12 for information on how to use your transmitter controls.

Slow red (0.5 sec on / 0.5 sec off) Binding See page 13 for more information on binding.

Flashing fast red (0.125 sec on / 0.125 sec off) Fail-Safe / Low Voltage Detect

Consistent Low Voltage in the receiver triggers Fail-Safe so there is enough
power to center the throttle servo before it completely loses power.

Failsafe

Your Traxxas radio system is
equipped with a built-in failsafe
function that returns the throttle
to its last saved neutral position in
the event of a signal loss. The LED
on the transmitter and the receiver
will rapidly ash red.

Nitro Rustler • 39

TQ 2.4GHz ADVANCED TUNING GUIDE

MENU TREE

The menu tree below shows how to navigate through
the TQ 2.4GHz transmitter’s various settings and
functions. Press and hold MENU to enter the menu tree,
and use the following commands to navigate through
the menu and select options.

MENU: When you enter a menu, you always start at the

top. Press MENU to move down the menu tree.
When you reach the bottom of the tree, pressing
MENU again will return you to the top.

SET: Press SET to move across the menu tree and select

options. When an option is committed to the
transmitter’s memory, the status LED will rapidly
blink green.

BACK: Press both MENU and SET to go back one level in

the menu tree.

EXIT: Press and hold MENU to exit programming.

Your selected options will be saved.

ECHO: Press and hold SET to activate the “echo” function.

Echo will “play back” your current position on the
Menu Tree, should you lose your place. For example:
If your current position is Steering Channel End
Points, holding SET will cause the LED to blink green
twice, green once, and then red three times. Echo
will not alter your adjustments or change your
position in the programming sequence.

Below is an example of how to access a function in the menu
tree. In the example, the user is setting the Multi-Function knob
to be a steering Dual Rate control.

To set the Multi-Function knob to control STEERING DUAL RATE (%):

1. Switch the transmitter on

2. Press and hold MENU until the green LED lights. It will blink in single
intervals.

3. Press SET. The red LED will blink in single intervals to indicate Steering
Dual Rate has been selected.

4. Press MENU twice. The red LED will blink three times repeatedly to
indicate Steering Percentage has been selected.

5. Press SET to select. The green LED will blink 8 times fast to indicate
successful selection.

6. Press and hold MENU to return to driving mode.

Restoring Factory Defaults:

Transmitter

OFF

Hold both

MENU and SET

Transmitter ONRelease MENU and

SET. Red LED blinks

40 • NITRO RUSTLER

Enter Programming

Press and hold
MENU for 3 seconds

Press MENU three

times. Red LED

blinks 4 times

Multi-Function Knob

1

One Blink Green

Press

MENU

Channel Setup

2

Two Blinks Green

Press

MENU

Mode Selection

3

Three Blinks Green

Press

MENU

Traxxas-Link

4

Four Blinks Green

Press SET to clear settings. LED will turn

solid green. Transmitter is restored to default

Press

SET

Press

SET

Press

SET

Press

SET

Press MENU to move through options.
Press SET to select an option.

Steering Sensitivity (Expo)

1

One Blink Red

Throttle Sensitivity (Expo)

2

Two Blinks Red

Steering % (Dual Rate)

3

Three Blinks Red

Braking %

4

Four Blinks Red

Throttle Trim

5

Five Blinks Red

Knob Disabled

6

Six Blinks Red

Steering (Channel 1)

1

One Blink Green

Press

MENU

Throttle (Channel 2)

2

Two Blinks Green

Press SET to select an option.

Electric

1

One Blink Red

Press

MENU

Nitro

2

Two Blinks Red

Model Locking

1

One Blink Green

Press

MENU

Delete Model

2

Two Blinks Green

Press

SET

Press

SET

Press

SET

Press

SET

Note: The transmitter is “live” during programming
so you can test the settings real time without having
to exit the menu tree.

Press MENU to move through options.
Press SET to select an option.

Servo Reversing

1

One Blink Red

Sub Trim

2

Two Blinks Red

End Points

3

Three Blinks Red

Turn left to desired endpoint and press set to save.
To reset max throw: Let go of controls and press SET.

Reset End Points

4

Four Blinks Red

Servo Reversing

1

One Blink Red

Sub Trim

2

Two Blinks Red

End Points

3

Three Blinks Red

forward to desired endpoint and press set to save.
To reset max throw: Let go of controls and press SET.

Reset End Points

4

Four Blinks Red

Unlock

1

One Blink Red

Lock

2

Two Blinks Red

Unlock All

3

Three Blinks Red

Conrm Deletion

1

One Blink Red

Press SET to reverse
servo direction.

Use knob to adjust
sub-trim. Press SET to save.

Use steering wheel to
adjust. Turn right to desired
end point, press set to save.

Press SET to restore
factory default endpoints.

Press SET to reverse
servo direction.

Use knob to adjust sub­trim. Press SET to save.

Use trigger to adjust. Pull
back to desired end point,
press set to save. Push

Press SET to restore
factory default endpoints.

TQ 2.4GHz ADVANCED TUNING GUIDE

THROTT

100100

00

THROTTLE TRIM

100100

THROTTLE TRIM

100100

THROTT

100100

00

1

Set Multi-Function
knob for STEERING
SENSITIVITY (Expo)

Set Multi-Function
knob for THROTTLE
SENSITIVITY (Expo)

Set Multi-Function
knob for STEERING
DUAL RATE (%)

Set Multi-Function
knob for BRAKING
PERCENTAGE (%)

Set Multi-Function
knob for
THROTTLE TRIM

To LOCK the
Multi-Function knob

To REVERSE
the direction of
STEERING servo

To set the SUB TRIM
of the STEERING
servo

To set the END
POINTS of the
STEERING servo

To reset the END
POINTS of STEERING
servo to defaults

To REVERSE
the direction of
THROTTLE servo

To set the SUB TRIM
of the THROTTLE
servo

To set the END
POINTS of the
THROTTLE servo

To reset the END
POINTS of THROTTLE
servo to defaults

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press/hold MENU

green LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

red LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

green LED blinks (x2)

x

Press MENU

red LED blinks (x2)

Press SET to confi rm

green LED blinks (x8)

Press MENU to confi rm

red LED blinks (x2)

Press MENU twice

red LED blinks (x3)

Press MENU 3 times

red LED blinks (x4)

Press MENU 4 times

red LED blinks (x5)

Press MENU 5 times

red LED blinks (x6)

2

green LED blinks

2

green LED blinks

2

green LED blinks

2

green LED blinks

2

green LED blinks

2

green LED blinks

2

green LED blinks

2

green LED blinks

Press SET

Press SET

Press SET

Press SET

Press SET

Press SET

Press SET

Press SET

x

8

returns to driving mode

x

2

x

3

x

4

x

5

x

6

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press MENU

Press MENU

Press MENU

Press MENU

x

x

x

x

x

x

x

x

x

Press/hold MENU

Press SET to select

green LED blinks (x8)

Press SET to select

green LED blinks (x8)

Press SET to select

green LED blinks (x8)

Press SET to select

green LED blinks (x8)

Press SET to lock

green LED blinks (x8)

green LED blinks (x2)

green LED blinks (x2)

green LED blinks (x2)

green LED blinks (x2)

8

Press/hold MENU

returns to driving mode

8

Press/hold MENU

returns to driving mode

8

Press/hold MENU

returns to driving mode

8

Press/hold MENU

returns to driving mode

8

Press/hold MENU

returns to driving mode

Press SET to reverse

red LED blinks (x2)

Press MENU twice

red LED blinks (x3)

Press MENU 3 times

red LED blinks (x4)

2

2

2

2

servo direction

Press MENU

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

Press SET

red LED blinks

x

8

x

2

x

3

x

4

Adjust the Multi-

Function knob until the

LED turns solid green.

Press/hold MENU

returns to driving mode

Use Multi-Function
knob to set neutral

Turn steering

wheel to desired max

left and right travel

x

Press SET

to reset end points

x

Press SET to reverse

servo direction

x

Press MENU

red LED blinks (x2)

x

Press MENU twice

red LED blinks (x3)

x

Press MENU 3 times

red LED blinks (x4)

to save each position

8

returns to driving mode

8

returns to driving mode

2

Use Multi-Function

3

trigger to set desired
max throttle or brake

4

green LED blinks (x8)

MENU TREE FORMULAS

To select functions and make adjustments to the TQ 2.4GHz transmitter without
referencing the menu tree, turn your transmitter on, fi nd the function in the left
column you wish to adjust, and simply follow the corresponding steps.

1

Always turn your

transmitter on fi rst.

x

8

Press SET

to save position

Press SET

Press/hold MENU

Press/hold MENU

knob to set neutral

Use throttle

Press SET

x

8

x

8

Press/hold MENU

returns to driving mode

Turn steering wheel

to test settings

x

Press SET

to save position

Press SET to save

Use trigger to test

Press/hold MENU

returns to driving mode

IF END POINTS

ARE OK:

Press/hold MENU

returns to driving mode

8

Press/hold MENU

returns to driving mode

IF END POINTS

ARE OK:

Press/hold MENU

returns to driving mode

NITRO RUSTLER • 41

IF END POINTS

NEED TO BE

CHANGED:

and repeat steps 6-8

IF END POINTS

NEED TO BE

CHANGED:

and repeat steps 7-9

Press SET

Press SET

NOTES

42 • Nitro Rustler

NOTES

Nitro Rustler • 43

091215 KC1249-R02

owner’s manual

1100 Klein Road, Plano Texas 75074

1-888-TRAXXAS