FUTABA 4PX User manual

2
Thank you for purchasing a Futaba 4PX-2.4GHz system.
Before using your 4PX-2.4GHz system, read this manual carefully in order to use your
R/C set safely.
After reading this manual, store it in a safe place.
IN NORTH AMERICA
Please feel free to contact the Futaba Service Center for assistance in operation, use and
programming. Please be sure to regularly visit the 4PX Frequently Asked Questions web
site at www.futaba-rc.com/faq/. This page includes extensive programming, use, set up and
safety information on the 4PX radio system and is updated regularly. Any technical updates
and US manual corrections will be available on this web page. If you do not nd the an-
swers to your questions there, please see the end of our F.A.Q. area for information on con-
tacting us via email for the most rapid and convenient response.
Don’t have Internet access? Internet access is available at no charge at most public libraries,
schools, and other public resources. We nd internet support to be a fabulous reference for
many modelers as items can be printed and saved for future reference, and can be accessed
at any hour of the day, night, weekend or holiday. If you do not wish to access the internet
for information, however, don’t worry. Our support teams are available Monday through
Friday 8-5 Central time to assist you.
OUTSIDE NORTH AMERICA
Please contact your Futaba importer in your region of the world to assist you with any ques-
tions, problems or service needs.
Please recognize that all information in this manual, and all support availability, is based
upon the systems sold in North America only. Products purchased elsewhere may vary. Al-
ways contact your region’s support center for assistance.
FOR SERVICE ONLY:
Futaba Service Center
3002 N. Apollo Drive, Suite 1
Champaign, IL 61822
Phone: [phone]
www.futaba-rc.com/service.html
Email: [e-mail]
FOR SUPPORT :
(PROGRAMMING AND USER QUESTIONS)
Please start here for answers to most questions:
www.futaba-rc.com/faq/
Fax: [phone]
Phone: [phone] option 2
E-mail: [e-mail]

3
• No part of this manual may be reproduced in any form without prior permission.
• The contents of this manual are subject to change without prior notice.
• This manual has been carefully written. Please write to Futaba if you feel that any corrections or clarications should
be made.
• Futaba is not responsible for the use of this product.
Battery Recycling (for U.S.A.)
The RBRC. SEAL on the nickel-cadmium battery contained in Futaba products
indicates that Futaba Corporation is voluntarily participating in an industry-
wide program to collect and recycle these batteries at the end of their useful
lives, when taken out of service within the United States. The RBRC. program
provides a convenient alternative to placing used nickel-cadmium batteries into the trash or
municipal waste system, which is illegal in some areas.
(for USA)
You may contact your local recycling center for information on where to return the spent
battery. Please call 1-800-8BATTERY for information on NiCd battery recycling in your
area. Futaba Corporation involvement in this program is part of its commitment to protect-
ing our environment and conserving natural resources.
RBRC™ is a trademark of the Rechargeable Battery Recycling Corporation.
Application, Export, and Modication
1. This product may be used for models only. It is not intended for use in any application
other than the control of models for hobby and recreational purposes.
2. Exportation precautions:
(a) When this product is exported from the country of manufacture, its use is to be approved
by the laws governing the country of destination for devices that emit radio frequencies. If
this product is then re-exported to other countries, it may be subject to restrictions on such
export. Prior approval of the appropriate government authorities may be required. If you
have purchased this product from an exporter outside your country, and not the authorized
Futaba distributor in your country, please contact the seller immediately to determine if
such export regulations have been met.
(b) Use of this product with other than models may be restricted by Export and Trade Con-
trol Regulations, and an application for export approval must be submitted.
3. Modification, adjustment, and replacement of parts: Futaba is not responsible for un-
authorized modication, adjustment, and replacement of parts on this product. Any such
changes may void the warranty.

4
Table Of Contents
For Your Safety As Well As That Of Others.......................8
Explanation of Symbols................................................................8
2.4GHz System Precautions.........................................................8
High Speed Mode Precautions.....................................................8
Operation Precautions..................................................................9
Battery Handling Precautions ....................................................10
Storage and Disposal Precautions ............................................11
Other Precautions .......................................................................11
Installation ..........................................................................32
Receiver and Servo Connections ..............................................32
Installation Safety Precautions ..................................................33
Before Using ......................................................................12
Features .......................................................................................12
Set Contents ................................................................................14
Transmitter T4PX.........................................................................15
T4PX Nomenclature.................................................................15
Power & Display Switch ...........................................................16
Power Off Forgotten Alarm & Auto Power Off..........................16
Low Battery Alarm....................................................................16
Digital Trim Operation (Wheel).................................................17
Digital Trim Operation (Grip) ....................................................17
Mechanical ATL Adjustment ....................................................18
Wheel & Trigger Tension Adjustment ......................................18
Trigger Slide Adjustment & Remove The High Point Spring ...19
Battery Replacement Method (4 AA Suze Batteries) ...............19
When Using The Optional Battery............................................20
When Charging For The Optional Battery................................20
Display When Power Switch Turned On ..................................21
Trim/Dial Lock ..........................................................................21
Total Timer ...............................................................................21
Changing Wheel Position And Modifying For Left-hand Use ...22
Using the optional angle spacer...............................................28
Trigger brake lever replacement ..............................................28
Non-telemetry LED (telemetry OFF sign) ..................................29
Handling the antenna and card slot and receiver ....................29
About T4PX Antenna ...............................................................29
Handling an microSD card (commercial product) ....................30
Receiver Terminology ..............................................................31
Receiver Installation.................................................................31

5
Before
Using
Function
Map
Functions
For Your Safe-
ty
As Well As
Installation
Reference
Initial
Set-Up
Initial Set-Up .......................................................................36
Preparations (Transmitter) .........................................................36
RF Output & Rx Type Check....................................................36
Receiver Type Change & How To Link ....................................37
Receivers Other Than T-FHSS ................................................39
Servo Type Check....................................................................39
Trigger Ratio Check .................................................................40
Trims Initial Set-Up...................................................................40
Function Map ......................................................................42
Menu Selection ............................................................................42
Calling The Menu Screen.........................................................42
Direct Menu..................................................................................44
Functions List..............................................................................45
Functions ...........................................................................46
Receiver Setting/Servo Type......................................................46
Receiver type (T-FHSS/S-FHSS/FASST(C1), Servo type (Digital/Analog) select
Ch. Reverse..................................................................................47
Servo operation reversing
Sub trim........................................................................................48
Servo center position ne adjustment
End Point Adjuster ......................................................................49
End point adjustment
Acceleration (Throttle Acceleration) .........................................52
Function which adjusts the movement characteristic from the throttle neutral position
Fail Safe/Battery Fail Safe Function ..........................................54
Fail safe, battery fail safe
Steering Curve (EXP) ..................................................................56
Steering operation curve adjustment
Throttle Curve.............................................................................57
Throttle curve adjustment
Steering Speed ............................................................................61
Steering servo delay
Throttle Speed .............................................................................63
Throttle servo delay
Trigger Mode................................................................................66
Neutral brake function
Throttle servo forward and brake operation proportion setting (Trigger ratio)
Trigger Switch
Idle-Up ..........................................................................................69
Idle up at engine start
Start Function ..............................................................................70
Throttle preset at start function

6
Engine Cut ...................................................................................71
Engine cut off by switch
A.B.S. Function............................................................................73
Pulse brake
Mixing Menu................................................................................78
Brake Mixing ................................................................................80
Front and rear independent brake control for 1/5GP car, etc.
Steering Mixing............................................................................84
Twin servo steering system
4WS Mixing ..................................................................................86
For corolla and other 4WS type vehicles mixing
Gyro Mixing..................................................................................88
Futaba car rate gyro
Dual ESC Mixing..........................................................................90
Front ESC and rear ESC
CPS-1 Mixing ...............................................................................92
Futaba CPS-1 channel power switch
Tilt Mixing.....................................................................................94
Outboard engine
Program Mixing 1,2,3,4,5 ............................................................96
Programmable mixes between arbitrary channels
Switch Select ...............................................................................99
Selection of functions operated by push switches
Dial Select ..................................................................................101
Selection of functions operated by digital dial and digital trim
Timer Function ..........................................................................104
Up, Fuel down, lap, or lap navigation timer
Lap List ......................................................................................111
Lap timer data (lap time, average lap time) check
Model Select ..............................................................................112
Model memory call
Model Name ...............................................................................113
Model memory name set/modify
Model Copy ................................................................................114
Model memory copy
Data Reset..................................................................................116
Model memory reset
MC Link Function (ESC Link) ...................................................117
Special function, Futaba ESC (MC960CR, MC851C, MC602C, MC402CR...etc.)
S.BUS Servo ..............................................................................117
Special function, Futaba S.BUS/S.BUS2 servo parameter setup

7
Before
Using
Function
Map
Functions
For Your Safe-
ty
As Well As
Installation
Reference
Initial
Set-Up
Reference ..........................................................................157
Specications ............................................................................157
Optional Parts ...........................................................................158
Warning Displays .....................................................................160
When requesting repair (For U.S.A.) .......................................162
Telemetry System......................................................................130
Telemetry Menu .....................................................................131
Telemetry :Receiver Battery...................................................132
Telemetry :The Drive Battery .................................................133
Telemetry :RPM .....................................................................134
Telemetry :Temperature.........................................................135
Sensor Menu..............................................................................136
Sensor List .............................................................................136
Sensor Reload .......................................................................137
Sensor Register .....................................................................138
Change Slot ...........................................................................139
Condition Function ...................................................................140
Two kinds of data can be set in one model
Response ...................................................................................142
The operation response can be adjusted
System Menu .............................................................................143
Display/ Sound/ LED setting/ Battery/ User name/ Data and Time/
Calibrattion/ Information
Display setting...........................................................................144
Sound Setting ............................................................................146
LED Setting ................................................................................147
Battery Type Setting .................................................................148
User Name..................................................................................149
Data And Time ...........................................................................150
Information.................................................................................151
Calibration..................................................................................152
Steering Dual Rate/ Throttle ATL "D/R ATL"...........................154
Steering angle adjustment while running (dual rate)
Brake side adjustment
Auxiliary Channel "CH3","CH4"..............................................155
Channel 3/4 servo operation position set/check
Servo View ................................................................................156
Displays servo operation on a bar graph

Warning
Caution
When using the 4PX in the "Digital servo" type, always use it under the following conditions:
Servos :Futaba digital servo (including BLS Series brushless servos)
Receiver’s battery :Matched to the ratings of the receiver and connected digital servo (dry cell battery cannot be used).
Transmitter mode :Digital servo type(See p.39 for setting method. )
Under other conditions, the set will not operate, or the specied performance will not be displayed even if it operates. In
addition, it may cause servo trouble. Futaba will not be responsible for damage, etc. caused by combination with the prod-
ucts of other companies.
In addition, the FSU Fail Safe Unit cannot be used because the system is different. Use the fail safe function of the trans-
mitter.
When using analog servos, always switch the 4PX servo type to the "Analog servo" mode.
Transmitter mode : Analog servo type(See p.39 for setting method.)
Receiver’s battery : Matched to the ratings of the receiver and connected servo.
The set cannot operate in the "Digital servo" type. Operation in this type will cause trouble with the servo and other equipment.
Digital servos (including BLS Series brushless servos) can also be used in the " Analog servo " type.
8
For Your Safety As Well As That Of Others
For Your Safety As Well As That Of Others
Use this product in a safe manner. Please observe the following safety precautions at all
times.
Explanation of Symbols
The parts of this manual indicated by the following symbols are extremely important
and must be observed.
Danger
Indicates procedures which may lead to dangerous situations and could
cause death or serious injury as well as supercial injury and physical
damage.
Indicates procedures that may not cause serious injury, but could lead to
physical damage.
Symbols: : Prohibited : Mandatory
Indicates a procedure which could lead to a dangerous situation and may
cause death or serious injury if ignored and not performed properly.
Warning
Caution
Symbols Explanation
2.4GHz System Precautions
Special attention should be paid before turning on the system while other cars are running or
other airplanes are ying because the 2.4GHz RC system could potentially affect them.
Be sure to set the Fail Safe function.
Digital Servo Type Precautions

Warning
9
For Your Safety As Well As That Of Others
Do not operate outdoors on rainy days, run through puddles of water or use when visibility is lim-
ited.
Should any type of moisture (water or snow) enter any component of the system, erratic operation and loss of control may oc-
cur.
Do not operate in the following places.
-Near other sites where other radio control activity may occur.
-Near people or roads.
-On any pond when passenger boats are present.
Operation Precautions
Do not operate this R/C system when you are tired, not feeling well or under the inuence of alco-
hol or drugs.
Your judgment is impaired and could result in a dangerous situation that may cause serious injury to yourself as well as others.
Do not touch the engine, motor, speed control or any part of the model that will generate heat
while the model is operating or immediately after its use.
These parts may be very hot and can cause serious burns.
Always perform an operating range check prior to use.
Problems with the radio control system as well as improper installation in a model could cause loss of control.
(Simple range test method)
Have a friend hold the model, or clamp it down or place it where the wheels or prop cannot come in contact with any ob-
ject. Walk away and check to see if the servos follow the movement of the controls on the transmitter. Should you notice
any abnormal operation, do not operate the model. Also check to be sure the model memory matches the model in use.
Turning on the power switches.
Always check the throttle trigger on the transmitter to be sure it is at the neutral position.
1. Turn on the transmitter power switch.
2. Turn on the receiver or speed control power switch.
Turning off the power switches
Always be sure the engine is not running or the motor is stopped.
1. Turn off the receiver or speed control power switch.
2. Then turn off the transmitter power switch.
If the power switches are turned off in the opposite order, the model may unexpectedly run out of control and cause a very
dangerous situation.
When making adjustments to the model, do so with the engine not running or the motor discon-
nected.
You may unexpectedly lose control and create a dangerous situation.
(Fail safe function)
Before running (cruising), check the fail safe function.
Check Method; Before starting the engine, check the fail safe function as follows:
1) Turn on the transmitter and receiver power switches.
2) Wait at least one minute, then turn off the transmitter power switch. (The transmitter automatically transfers the fail safe
data to the receiver every minute.)
3) Check if the fail safe function moves the servos to the preset position when reception fails.
The fail safe function is a safety feature that minimizes set damage by moving the servos to a preset position when recep-
tion fails. However, if set to a dangerous position, it has the opposite effect. When the reverse function was used to change
the operating direction of a servo, the fail safe function must be reset. Setting example: Throttle idle or brake position

Caution
Warning
10
For Your Safety As Well As That Of Others
(Only when Ni-MH/Li-ion batteries are used)
Battery Handling Precautions
Never plug the charger into an outlet of other than the indicated voltage.
Plugging the charger into the wrong outlet could result in an explosion or re.
Never insert or remove the charger while your hands are wet.
You may get an electric shock.
Do not use the transmitter's battery, HT5F1700B or FT2F1700BV2 as the receiver's battery.
Since the transmitter's battery has an overload protection circuit, the output power will be shut down when the high current
load is applied. This may result in runaway or fatal crash.
Do not use commercial AA size Ni-MH and Li-ion batteries.
Quick charging may cause the battery contacts to overheat and damage the battery holder.
Do not short circuit the battery terminals.
A short circuit across the battery terminals may cause abnormal heating, re and burns.
Do not drop the battery or expose it to strong shocks or vibrations.
The battery may short circuit and overheat; electrolyte may leak out and cause burns or chemical damage.
When the model is not being used, always remove or disconnect the battery.
Leaving the battery connected could create a dangerous situation if someone accidentally turns on the receiver power
switch. Loss of control could occur.
Always check to be sure your batteries have been charged prior to operating the model.
Should the battery go dead while the model is operating, loss of control will occur and create a very dangerous situation.
To recharge the transmitter battery, use the special charger made for this purpose.
Overcharging could cause the battery to overheat, leak or explode. This may lead to re, burns, loss of sight and many
other types of injuries.
Always keep the charger disconnected from the outlet while it is not in use.
Do this to prevent accidents and to avoid overheating.
When running (cruising), do not use the dry cell battery box at the transmitter.
The accessory dry cell battery box is for performance checks. Do not use it for other than performance checks. The dry cell
battery may be separated from the battery box contacts by shock and the power cut off. If the power is cut off while run-
ning (cruising), a collision may occur. The use of Futaba a genuine NiMH or LiFe battery pack is strongly recommended.
Do not connect the charger when the battery is not connected.
A load will be applied to the circuit and the transmitter may be damaged.

Warning
Warning
Caution
11
For Your Safety As Well As That Of Others
Storage and Disposal Precautions
Do not leave the radio system or models within the reach of small children.
A small child may accidentally operate the system. This could cause a dangerous situation and injuries. Ni-Cd batteries
can be very dangerous when mishandled and cause chemical damage.
Do not throw Ni-MH/LiFe batteries into a re. Do not expose batteries to extreme heat. Also do
not disassemble or modify a battery pack.
Overheating and breakage will cause the electrolyte to leak from the cells and cause skin burns, loss of sight, and other
injuries.
When the system will not be used for any length of time, store the system with HT5F1700B batteries
in a discharged state. Be sure to recharge the batteries prior to the next time the system is used.
If the batteries are repeatedly recharged in a slightly discharged state, the memory effect of the Ni-Cd battery may con-
siderably reduce the capacity. A reduction in operating time will occur even when the batteries are charged for the rec-
ommended time. (After discharge to 1cell E.V.=1V)
<Battery Electrolyte>
The electrolyte in Ni-MH/Ni-Cd batteries is a strong alkali. Should you get even the smallest amount of the electrolyte in your
eyes, DO NOT RUB. Wash immediately with water, and seek medical attention at once. The electrolyte can cause blindness. If
electrolyte comes in contact with your skin or clothes, wash with water immediately.
Do not store your R/C system in the following places.
- Where it is extremely hot or cold.
- Where the system will be exposed to direct sunlight.
- Where the humidity is high.
- Where vibration is prevalent.
- Where dust is prevalent.
- Where the system would be exposed to steam and condensa-
tion.
Storing your R/C system under adverse conditions could cause deforma-
tion and numerous problems with
operation.
If the system will not be used
for a long period of time, re-
move the batteries from the
transmitter and model and
store in a cool, dry place.
If the batteries are left in the transmit-
ter, electrolyte may leak and damage
Do not expose plastic parts to fuel, motor spray, waste oil or exhaust.
The fuel, motor spray, waste oil and exhaust will penetrate and damage the plastic.
Always use only genuine Futaba transmitters, receivers, servos, ESCs (electronic speed con-
trols), Ni-MH/Ni-Cd/Li-ion batteries and other optional accessories.
Futaba will not be responsible for problems caused by the use of other than Futaba genuine parts. Use the parts speci-
ed in the instruction manual and catalog.
Other Precautions
<Battery Recycling>
A used battery is a valuable resource. Insulate the battery terminals and dispose of the battery by taking it to a battery recycling center.

1
Before Using
-High balance design
Rigidity is improved and weight is lightened 15g from that of the previous model by design that
effectively impacts the age and the use of aluminum at part of the frame.
-Full color LCD
Excellent outdoor visibility OVGA3.5 inch backlighted color TFT liquid crystal. Enlarged dis-
play improves visibility tremendously.
-High response & telemetry T-FHSS
Increased response T-FHSS transmission increases response by 30% over that of the previous
model. In addition, receiver power supply voltage and other information from the receiver can be
displayed at the transmitter by fast, stable bidirectional transmission.
-Updateable software
Software can be updated by microSD card. Model data can also be saved in a microSD card. In
addition, telemetry log data can be saved.
-Model memory for 40 models
Model names can use up to 10 letters, numbers, and symbols, so that logical names may be used.
A model memory with different setups can be created by using the model copy function.
-Brake mixing for large cars
Brake mixing of the front and rear wheels of 1/5GP and other large cars can be adjusted inde
pendently.
-Steering mixing
Smooth cornering is possible by independent left and right steering servo setting.
-4WS mixing for crawlers and other 4WS type
This function can be used with crawlers and other 4WS type vehicles.
-Dual ESCs mixing for crawlers cars
ESC at the front and rear are controlled independently.
-Gyro mixing
The sensitivity of Futaba car rate gyros can be adjusted from the T4PX.
-CPS mixing
LED lighting and ashing control using our CPS-1 channel power switch can be matched to
steering and throttle operation by switch only.
-S.BUS servo
This is a special function that allows setting of the parameters of our S.BUS servo whose set-
tings are changed by using PC Link software.
-MC-Link
This is a dedicated function which allows setting of the contents of the Link software which
makes possible Futaba speed controller (ESC), MC960CR, MC950CR, MC850C, MC851C,
MC602C, MC402CR, etc. variable frequency and other data changes by PC at the T4PX.
Before Using
Features

2
Before Using
-Response change function
The operation response can be set in 50 steps to match your preference and the course and ve-
hicle.
-Anti-skid braking system (A.B.S.)
This function applies the brakes so that the tires of gasoline engine cars, etc. do not lose their
grip on the road even when braking at corners.
-Throttle acceleration
Gasoline engine cars have a time lag before the clutch and brakes become effective.
The TH-ACCEL function reduces this time lag.
-Throttle speed
Sudden trigger operation on a slippery road surface will only cause the tires to spin and the
model to not accelerate smoothly. By setting the throttle speed function, operation can be per-
formed smoothly and easily. It also suppresses battery consumption.
-Steering speed
When you sense that the steering servo is too fast, etc., the servo operating speed (direction that
suppresses the maximum speed) can be adjusted.
-Non-telematry LED
When the telemetry function is OFF to conrm that the telemetry function is not operating.
-Racing timer
The lap timer can record 99 lap times, total time, and average lap time. The timer can also be
started automatically by trigger operation. The race time and audible alarm can be set.
The 4PX also has a navigation timer effective during practice runs. The target lap and re-/fuel-
ing time are indicated by an audible alarm. An up timer and down timer are also provided.
-Function select dial function
This function assigns functions to dials (digital trim, grip dial, knob). The step amount and oper-
ating direction can also be adjusted. Trim positioning at each model call is unnecessary because
all the dials are digital.
-Function select switch function
This function assigns functions to 3 switches. The operating direction can also be set.
-Wheel & Trigger position can be changed
The wheel position can be offset by using an accessory APA wheel position offset adapter.
The wheel angle can also be adjusted.
The position of the throttle trigger can be moved forward and backward.
-Trigger brake lever replacement
The trigger brake lever is selected from a narrow nylon type and wide type
-Edit button lock & trim/dial lock functions
Lock functions which prohibit setting and operation by transmitter edit buttons, trim, and dials
are provided.
-Left-handed support
The left and right installation direction of the wheel section can be reversed.
-Tension adjustment function
The tension of the steering wheel & throttle trigger springs can be adjusted from the outside.

3
Before Using
After opening the box, rst check if the contents conform to the following. The contents de-
pend on the set as shown below.
Set Contents
Transmitter T4PX
Receiver R304SB or R304SB-E
Miscellaneous
Dry battery holder
*Installed in transmitter.
Receiver switch
Wheel offset adapter(APA)
Wheel adapter 32deg
Trigger brake lever (narrow type)
Miniature screwdriver
Instruction manual
- If any of the set contents are missing, or you have any questions, please contact your
dealer.
Caution
When using the T4PX in the "Digital servo" type, always use it under the following conditions:
Servos:Futaba digital servo (including BLS Series brushless servos)
Receiver’s battery: Matched to the ratings of the receiver and connected digital servo (dry cell battery cannot be used).
Transmitter servo type:Digital servo type (See page 39 for setting method.)
Under other conditions, the set will not operate, or the specied performance will not be displayed even if it operates. In
addition, it may cause servo trouble. Futaba will not be responsible for damage, etc. caused by combination with the prod-
ucts of other companies.
In addition, the FSU Fail Safe Unit cannot be used because the system is different. Use the fail safe function of the trans-
mitter.
When using analog servos, always switch the T4PX servo type to the "Analog servo" type.
Transmitter mode :"Analog servo" type (See page 39 for setting method.)
Receiver’s battery: Matched to the ratings of the receiver and connected digital servo.
The set cannot operate in the "Digital servo" type. Operation in this type will cause trouble with the servos and other equip-
ment. Digital servos (including BLS Series brushless servos) can also be used in the "Analog servo" type.
Always use only genuine Futaba transmitters, receivers, servos, ESCs (electronic speed controls),
Ni-MH/Ni-Cd/Li-ion batteries and other optional accessories.
Futaba will not be responsible for problems caused by the use of other than Futaba genuine parts. Use the parts specied
in the instruction manual and catalog.

4
Before Using
High point spring
Grip Handle
A vibration motor is built into the grip handle and
racing timer time-up, low battery alarm, telemetry
alarm, etc. can be generated by vibration.
Earphone Jack
Telemetry data can be listened to with commer-
cial earphones.
Non-telematry LED
Charging jack (interior right side)
Communication port (interior left side)
(Lights when the telemetry function is off.)
Convenient in trigger switch posi-
tion checks.
*The switches, dial, and trimmers in the gure are shown in the initial setting position.
Antenna
Digital Dial (DL1)
Mechanical ATL
adjusting screw
Throttle trigger
Power&Display
switch
Digital Trim 2 (DT2)
(default throttle trim)
Digital Trim1 (DT1)
(default steering trim)
Digital Trim4 (DT4)
Digital Trim3 (DT3)
Digital Trim5 (DT5)
(default dual rate)
Steering wheel
Push switch 2 (PS2)
Push switch 1 (PS1)
Push switch 5 (PS5)
Push switch 3 (PS3)
Push switch 4 (PS4)
LED
LCD screen
Edit buttons
Nomenclature
Transmitter T4PX
Digital Trim6 (DT6)
(default brake rate)
Wheel tension
adjusting screw
Trigger tension
adjusting screw
Battery cover
Cover
Trigger slide adjusting screw

DISP ON
Radio waves are not being
transmitted
PWR ON
Radio waves are being
transmitted
5
Before Using
Power & Display Switch
The power switch and display switch are push switches.
When the power switch (PWR) is held down, operation starts by transmitting radio waves. When
the display switch is held down, the transmitter side data can be checked and set. When the power
is turned off, if the power switch or display switch is held down, the power is turned off. If both
switches are pressed simultaneously, the power is turned off quickly.
Power Off Forgotten Alarm & Auto Power Off
At T4PX initialization, if steering wheel, throttle trigger, push switch, edit button, or other
operation is not performed within 10 minutes, an audible alarm will sound and the message
"Warning: Auto power off" will appear.
If steering wheel, throttle trigger, push switch, edit button or other
operation is performed, the alarm is reset. Also turn off the power
when the transmitter is not in use. If the alarm is not reset, the auto
power off function will automatically turn off the power after 5
minutes. If you do not want to use this alarm and the auto power off
function, they can be disabled by system setting (p.148).
Low Battery Alarm
If the transmitter battery voltage drops below the usable range, an audible alarm will sound
and "Low battery" will be displayed. Since the usable range of LiFe and NiMH batteries and
LiFe batteries is different, the power supply used must be set by system setting. If the battery
goes dead while running (cruising), since there is the danger of collision, immediately recover
the vehicle (boat) and stop running (cruising).
Warning
When a low battery alarm is generated, cease operation immedi-
ately and retrieve the model.
If the battery goes dead while in operation, you will lose control of the model.
"T-FHSS, S-FHSS, FASST" is displayed
"Display" is displayed

6
Before Using
• Each step is indicated by a tone.
• When the trim exceeds the maximum trim adjust-
ment range, the beep will change and the servo will
not move any farther. Return to the neutral position
(center) by pressing both the push button switches
simultaneously for about one second.
• Reset when tilted to the transmitter body side while
pressing each trim button in the wheel center direc-
tion.
DT1DT2
DT4 DT3
Digital Trim Operation (Wheel)
(Initial settings: DT1: Steering trim, DT2: Throttle trim, DT3: Channel 3, DT4: Channel 4)
Operate digital trim by tilting each trim lever up and down or left and right. The current trim po-
sition is displayed on the LCD screen. However, operation is impossible when trim/dial lock (P21)
is set.
Digital Trim Operation (Grip)
(Initial setting: DT5; Steering D/R, DT6; Brake rate)
Operate the lever by turning them. The current set value is displayed on the LCD screen. How-
ever, this operation cannot be performed when the trim/dial lock (p.21) function is set.
Steering trim display
Throttle trim display
Brake rate
display
Steering dual rate
display
Trim Operation
• Each step is indicated by a tone.
• When the trim exceeds the maximum trim adjust-
ment range, the tone will change pitch and the ser-
vo will not move any farther.
With the center trim feature, trim adjustments have no effect on the maximum servo
travel. This prevents the linkages from binding when adjustments are made.
Steering dual rate DT5
Brake rate (Brake1) DT6

7
Before Using
Mechanical ATL
adjusting screw
Adjustment
1 Using a 1.5mm hex wrench, adjust the trigger
brake (reverse) stroke. (The screw moves the
throttle trigger stopper.)
• When the screw is turned clockwise, the stroke becomes
narrower. Adjust the stroke while watching the screw.
Note:
Mechanical ATL Adjustment
Make this adjustment when you want to decrease the stroke of the brake (back) side of the
throttle trigger for operation feel.
Wheel & Trigger Tension Adjustment
Make this adjustment when you want to change the wheel or trigger spring’s tension.
Adjustment
1 Using a 1.5mm hex wrench, adjust the wheel
spring tension by turning the screw inside the
adjusting hole in the arrow direction.
• The spring is set to the weakest tension at the factory.
• When the adjusting screw is turned clockwise, the spring
tension increases.
Note:
Wheel tension
adjusting screw
Once you have changed the mechanical stroke on the brake side, be sure to adjust the
scale of the throttle channel accordingly by using the "Adjuster Function" (p.128).
Due to this change, you also need to adjust in most cases the travel of the throttle servo
by using "Data Setting."
The adjustment range is up to 7 to 8 turns from the fully tightened (strongest) position. If
turned farther than this, the adjusting screw may fall out.
Trigger tension
adjusting screw

Battery cover
Slide battery cover while pressing here.
8
Before Using
Adjustment
1Using a 2.0mm hex wrench, loosen the trigger slide mounting screw by turning it slightly
counterclockwise.
Always loosen this screw.
High point spring can be re-
moved with radio pliers, etc.
Please adjust it with-
in the range of mark.
2Adjust the trigger slide position within the
marked range.
The high point spring can be removed by moving to the
fastest from the grip.
When the high point spring was removed, perform
throttle side correction by adjuster function (p.152).
3Retighten the mounting screw loosened at
step 1 and fasten the trigger slide.
Note:
If the trigger slide screw is turned too
much, the screw may fall out.
Caution
Trigger Slide Adjustment & Remove The High Point Spring
The throttle trigger position can be moved forward and backward.
Trigger slide
mounting screw
Battery Replacement Method
1Remove the battery cover from the transmit-
ter by sliding it in the direction of the arrow in
the gure.
2Remove the used batteries.
3Load the new AA size batteries. Pay very
close attention to the polarity markings and
reinsert accordingly.
4Slide the battery cover back onto the case.
Battery Replacement Method (4 AA Size Batteries)
Load the four batteries in accordance with the polarity markings on the battery holder.
When running (cruising), do not use the dry cell battery box at the transmitter.
The accessory dry cell battery box is for performance checks. Do not use it for other than performance checks. The dry
cell batteries will be separated from the battery box contacts by shock and the power may be cut off. There is the danger
of collision if the power is cut while running (cruising). The use of Futaba genuine NiMH or LiFe batteries is strongly recom-
mended.

Charging jack
9
Before Using
Caution
When closing the battery cover, be
careful that the battery cover does
not pinch the battery lead wires.
Shorting of the battery lead wires may lead
to fire and abnormal heating and cause
burns or re disaster.
Battery Replacement Method
1Refer to the previous description and remove
the transmitter battery cover.
2After removing the dry cell battery box from
the transmitter, disconnect the connector.
3Insert the connector of the new battery and
load the new battery into the transmitter.
4Finish by installing the battery cover.
When Using The Optional Battery
When using an optional rechargeable battery, replace the battery as described below.
-Always use the optional HT5F1800B, FT2F1700BV2, FT2100BV2 rechargeable battery.
-The type of power source used must be set by system setting (p.148).
-When the transmitter will not be used for a long time, remove the battery.
Warning
Never plug it into an outlet other than the indicated voltage.
Plugging the charger into the wrong outlet could result in an explosion or re.
Do not insert and remove the charger when your hands are wet.
It may cause an electric shock.
Always use the special charger or a quick charger for digital proportional R/C sets to charge a digi-
tal proportional R/C set Ni-MH or LiFe battery.
Overcharging a Ni-MH battery can result in burns, re, injuries, or loss of sight due to overheating, breakage, or electrolyte
leakage.
AC outlet
Charger
Transmitter
charging LED
To transmitter
charging jack
To receiver
Ni-Cd battery
Charge Of A NiMH Battery
(Example: When using the HT5F1800B with the special charger)
1Plug the transmitter cord of the special charger into the
charging jack on the rear of the transmitter.
2Plug the charger into an AC outlet.
3Check that the charging LED lights.
Charge Of A LiFe Battery
(Example: When using the
FT2F1700BV2/2100BV2
with the special charger)
1Remove the battery cover.
2Disconnect the battery from the T4PX.
3Balance charging cannot be done through the transmit-
ter, you must remove the LiFe battery to do this.
When Charging For The Optional Battery

Upper:The current receiver type is dis-
played. (T-FHSS /S-FHSS /FASST)
When turned on by DSP switch , "Display"
is displayed
Lower: Servo type
(Digital servo /Analog servo)
10
Before Using
Caution
When the charger is not in use, disconnect it from the AC outlet.
Do this to prevent accidents and to avoid overheating.
If the power is turned on during charging, an RF error will be displayed and an audible alarm will
sound. Immediately turn off the power. (See p.161)
DT1
DT2
DT3
DT4
DT5
DT6
DL1
Total timer or clock
display (H:M)
Battery voltage
display
Upper: Steering trim display
Lower: Throttle trim display
Racing timer
Trim/dial lock display
Display When Power Switch Is Turned On
Function names and rate as-
signed to dials are displayed.
Model name
(15 characters)
User name
(15 characters)
Trim/Dial Lock
T4PX setup and operation by digital trim DT1, DT2, DT3, DT4, DT5 and DT6 and dials
DL1 can be prohibited.
Setting
1When the (-) button is pressed for about 1 second at the initial screen, a conrmation beep
is generated and the trim/dial lock display mark appears on the screen.
Clearing
1Edit button lock and trim/dial lock can be cleared in the initial screen state by the same
method as the setting described above. (The trim/dial lock display disappears from the
screen.)
Total Timer
The total timer shows the accumulated time from last reset.
The total time does not change even when the model changes.
Reset method
1In the initial screen state, hold down the (+) and (-) buttons simultaneously for 1 second.
* The total timer display counts up from 1 minute to 99hours 59 minutes.
Telemetry function
Receiver -> Transmitter
The reception strength is shown.
Servo operation of each
channel can be checked.