FUTABA 4YWD User manual

1M23N28702
R
Digital Proportional R/C System
4YWD
4-channel, FHSS
Radio control system
for EP Car
INSTRUCTION MANUAL

Thank you for purchasing a Futaba 4YWD FHSS 2.4GHz system.
This system is based on the combination of the newly developed 2.4GHz transmitter and
its corresponding receiver. Before using your 4YWD 2.4GHz system, read this manual
carefully and use your R/C set safely.
After reading this manual, store it in a safe place.
FHSS 4YWD 2.4GHz system
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system minimizes the interference from other 2.4GHz systems.
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system is not compatible with FASST.
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control of models for hobby and recreational purposes.
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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.
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and an application for export approval must be submitted.
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warranty.
Compliance Information Statement (for U.S.A.)
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operation.
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7(/RU(PDLOVHUYLFH#IXWDEDUFFRP6HUYLFH
Battery Recycling (for U.S.A.)
The RBRCTM 6($/ RQ WKH HDVLO\ UHPRYDEOH QLFNHOFDGPLXP EDWWHU\ FRQWDLQHG LQ )XWDED
products indicates that Futaba Corporation is voluntarily participating in an industry program
to collect and recycle these batteries at the end of their useful lives, when taken out of service
ZLWKLQWKH 8QLWHG6WDWHV7KH 5%5&TM program provides a convenient alternative to placing
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involvement in this program is part of its commitment to protecting our environment and conserving
natural resources.
RBRCTM is a trademark of the Rechargeable Battery Recycling Corporation.

3
Safety Precautions ............................. 4
Definition of Symbols ............................................................ 4
2.4GHz System Precautions ................................................. 4
Operation Precautions .......................................................... 5
Storage and Disposal Safety Precautions ........................... 6
Other Safety Precautions ...................................................... 7
Before Operation ................................ 8
System Contents .................................................................... 8
Nomenclature / Handling ....................................................... 9
Assembly / Adjustment ..................... 12
Receiver and Servo Connection ......................................... 12
How to Link Transmitter and Receiver ............................... 13
Assembly Precautions ........................................................ 14
Transmitter Set-Up Procedures .......................................... 15
4YWD Functions ................................ 16
Trim ...................................................................................... 16
Stick Adjustment ................................................................. 17
MC231CR Operation ........................................................... 17
MC231CR Function............................................................... 18
Power Down Mode ................................................................ 19
Reference .......................................... 20
Ratings .................................................................................. 20
Troubleshooting ................................................................... 21
Error Displays ...................................................................... 22
When Requesting Repair .................................................... 22
Warning: This product contains a chemical known to cause cancer and birth defects (or
other reproductive harm).
s.OPARTOFTHISMANUALMAYBEREPRODUCEDINANYFORMWITHOUTPRIORPERMISSION
s4HECONTENTSOFTHISMANUALARESUBJECTTOCHANGEWITHOUTPRIORNOTICE
s4HIS MANUAL HAS BEEN CAREFULLY WRITTEN 0LEASE WRITE TO &UTABA IF YOU FEEL THAT ANY CORRECTIONS OR
CLARIlCATIONSSHOULDBEMADE
s&UTABAISNOTRESPONSIBLEFORTHEUSEOFTHISPRODUCT
Safety
Precautions
Before
Operation
Assembly /
Adjustment
4YWD-2.4G
Functions
Reference
Table of Contens

4
For your safety as well as that of others, please read this manual thoroughly prior to
installation and operation of your digital proportional R/C system.
DefinitionofSymbols
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2.4GHzSystemPrecautions
󾾝WARNING
Donotcover/holdthebuilt-inantennapartofT4YWD-2.4Gtransmitterbyyour
handduringrunning.Donotputanyconductiveplate/stickerontheantennapart.
Otherwise,theoperatingrangemaybecomeshorter.
Donotperformthelinkingprocedurewhenmotor'smainwireisconnectedis
operatingasitmayresultinseriousinjury.
￸Whilethelinkingisdone,pleasecyclereceiverpowerandcheckifthereceiverto
belinkedisreallyunderthecontrolofthetransmittertobelinked.
￸AlwaysuseR214GF-Eunder7.4VNiCd/NiMHbatteryorregulatedoutputfromyour
ESC.Usingdrycellbatteriesmaycausemalfunction.Besurethatwhenusingan
ESC'sregulatedoutput,thecapacityoftheESCmeetsyourusagecondition.
￸Inordertomaintaincompletecontrolofyourcaritisimportantthatitremains
visibleatalltimes.Runningbehindlargeobjectsisnotsuggested.Doingsomay
resultinthereductionofthequalityoftheradiofrequencylinktothemodel.
Safety Precautions
Explanation of Symbols
DANGER 0ROCEDURESWHICHMAYLEADTOADANGEROUSCONDITIONANDCAUSEDEATHOR
SERIOUSINJURYTOTHEUSERIFNOTCARRIEDOUTPROPERLY
WARNING 0ROCEDURESWHICHMAYLEADTOADANGEROUSCONDITIONORCAUSEDEATHOR
SERIOUSINJURYTOTHEUSERIFNOTCARRIEDOUTPROPERLYORPROCEDURESWHERE
THEPROBABILITYOFSUPERlCIALINJURYORPHYSICALDAMAGEISHIGH
CAUTION 0ROCEDURESWHERETHEPOSSIBILITYOFSERIOUSINJURYTOTHEUSERISSMALLBUT
THEREISADANGEROFINJURYORPHYSICALDAMAGEIFNOTCARRIEDOUTPROPERLY
Explanation of Graphic Symbols
)NDICATESANOPERATIONTHATPROMPTSAWARNINGINCLUDING#AUTION
)NDICATESANOPERATIONTHATMUSTNOTBEPERFORMED
)NDICATESANOPERATIONTHATALWAYSMUSTBEPERFORMED

5
OperationPrecautions
󾾝WARNING
￸WhenusingaNiCd/NiMHbatterytopoweryoursystem,alwayschargeandcheck
thebatteryvoltagepriortooperation.Shouldthebatterydischargebelowthe
minimumvoltagelevel,controlwillbelost.
￸Priortooperationalwaysperformarangetest.EvenoneabnormalityintheR/C
systemmaycauselossofcontrol.
[Range Test Procedure]
(AVE A FRIEND HOLD THE MODEL ORPLACE ON A STANDWHERETHE WHEELS ORPROP CAN NOT
COMEINCONTACTWITHANYOBJECT/PERATEFROMADISTANCEOFABOUTFEET"ESURETO
CHECKTHEMOVEMENTOFEACHSERVOTOMAKESUREITFOLLOWSTHEMOVEMENTOFTHESTEERING
STICKANDTHROTTLESTICK)FTHESERVOSDONOTFOLLOWTHECOMMANDSFROMTHETRANSMITTEROR
ANYTYPEOFINTERFERENCEISDETECTEDDONOTOPERATETHEMODEL
Neveroperateintherainorrunthroughpuddles.Thetransmitter,receiver,
batteriesandmostservos,andspeedcontrolsarenotwaterproof.Contactwith
anytypeofmoistureorimmersioninwaterorsnowwillcausedamagealongwith
possiblelossofcontrol.Shouldanytypeofmoistureenteranycomponentofthe
system,immediatelystopusingtheR/Csystemandreturnittoourservicecenter
forinspection.
Donotoperatewhenvisibilityislimited.Shouldyoulosesightofthemodel,a
collisionorotherdangeroussituationmayoccur.
Donotoperatenearpeopleorroads.
Donotoperatenearhightensionpowerlinesorcommunicationbroadcastingan-
tennas.
Priortotheoperationofanymodelbesuretheareayouplantouseissafe.Beaware
ofallobjectsthatmaybeinthepathofyourmodel.Donotoperatethemodelwhere
peopleoranytypeofmoveableobjectcouldstrayinthepathofyourmodel.Control
lossduetointerference,componentfailure,lossofsightorlowbatteryvoltagecould
resultinseriousinjurytoyourselfandothersaswellasdamagetoyourmodel.
Donotoperatewhenyouaretired,notfeelingwellorundertheinfluenceof
alcoholordrugs.
Yourjudgmentisimpairedandcouldresultinadangeroussituationthatmaycause
seriousinjurytoyourselfandothers.
￸(Turningonthepowerswitches)
Alwayscheckthethrottlestickonthetransmittertobesureitisattheneutralposi-
tion.
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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unexpect-
edlyrunoutofcontrolandcauseaverydangeroussituation.

6
￸Makealladjustmentstotheradiocontrolsystemwiththeelectricmotor
disconnected.
Ifthemotorisconnectedwhileadjustmentsaremade,themodelmayrunoutofcon-
trol.
￸Removethemainbatterysourcefromelectricpoweredmodelswhentheyarenot
beingused.
Shouldyouaccidentallyleavethereceiverswitchon,themodelcouldrunoutofcon-
trol.
󾾝CAUTION
Donottouchthemotor,speedcontroloranypartofthemodelthatwillgenerate
heatwhilerunning.
Touchinghotpartswillresultinseriousburns.
￸Whenthechargerisnotinuse,disconnectitfromtheoutlet.Thiswillprevent
accidents,overheatingandshortcircuits.
StorageandDisposalSafetyPrecautions
󾾝WARNING
￸Attheendofaday'soperation,storethesystemwithNiCd/NiMHbattery
discharged.Besuretorechargethesystembeforeitisusedagain.
Youshouldfullydischargeyoursystem'sbatteriesperiodicallytopreventacondition
called"memory".Forexample,ifyouonlymaketworunsinadayoryouregularlyuse
asmallamountofbattery'scapacity,thememoryeffectcanreducetheactualcapac-
ityevenifthebatteryischargedfortherecommendedamountoftime.
DonotthrowaNiCd/NiMHbatteryintoafire.Donotdisassembleorattemptto
repairaNiCd/NiMHbatterypack.
Overheating,damageandacidleakagemayleadtoburns,lossofeyesightaswellas
numerousothertypesofinjuries.TheelectrolyteinNiCd/NiMH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elec-
trolytecancauseblindness.Ifelectrolytecomesincontactwithyourskinorclothes,
washwithwaterimmediately.
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.NiCd/NiMHbatteriescanbeverydangerouswhenmishandled
andcausechemicaldamage.

7
󾾝CAUTION
DonotstoreyourR/Csystemwhereitwillbeexposedtothefollowingconditions.
•Extremeheatorcoldness
•Exposedtodirectsunlight
•Wherehumidityishigh
•Wherevibrationisprevalent
•Wheredustisprevalent
•Wherethereissteamandcondensation
StoringyourR/Csystemunderadverseconditionscouldcausedeformationand
numerousotherproblemswithoperation.
￸Ifthesystemwillnotbeusedforalongperiodoftime,removethebatteriesfrom
themodelandstoreinacool,dryplace.
Ifthebatteriesareleftinthemodel,electrolytemayleakanddamagethemodel.
<NiCd/NiMH Battery Recycling>
$XVHG1L&G1L0+EDWWHU\LV YDOXDEOH UHVRXUFH ,QVXODWH WKHEDWWHU\WHUPLQDOV DQG GLVSRVHRIWKH
battery by taking it to a battery recycling center.
OtherSafetyPrecautions
󾾝CAUTION
￸Whenoperatingtwoormoremodelsatthesametime,haveathirdpersonactasa
spotter.Theywillbeinchargeofsafetyandyoushouldfollowtheirinstructions.
￸Beginnersshouldreceiveinstructionsregardingsafetyandoperationfroman
experiencedmodeler.
￸AlwaysuseonlygenuineFutabatransmitter,receivers,servos,andelectronicspeed
controls,alongwithotheroptionalpartsandcomponents.
FutabawillnotbeheldresponsiblefordamagescausedbyotherthangenuineFutaba
partsandcomponents.UseonlygenuineFutabapartsandcomponentslistedinthe
instructionmanualandcatalog.
NeverusetheT4YWD/R214GF-EinGPmodels(enginemodels),modelboatandair
models(airplane,helicopter,glider,etc.).
￸T4YWD/R214GF-Ecanbeusedonlyforelectricmodelcars.
Donotshortcircuitthebatteryterminals.
Shortcircuitingtheterminalswillleadtosparksandoverheatingandcouldcausea
fireandburnsaswell.
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.
<NiCd/NiMH Battery Electrolyte>
The electrolyte in NiCd/NiMH batteries is a strong alkali. Should you get even the smallest amount
RI WKH HOHFWURO\WH LQ \RXU H\HV '2 127 58% :DVK LPPHGLDWHO\ ZLWK ZDWHU DQG VHHN PHGLFDO
DWWHQWLRQDWRQFH7KHHOHFWURO\WHFDQFDXVHEOLQGQHVV,IHOHFWURO\WHFRPHVLQFRQWDFWZLWK\RXUVNLQ
or clothes, wash with water immediately.

8
SystemContents
Before Operation
After opening the container, check the contents for the following items. The contents will
vary with the system purchased.
4YWD-2.4GHz System Contents
4RANSMITTER T4YWD-2.4G (x1)
2ECEIVER R214GF-E (x1)
3ERVO ----- S3003 (x3) S3003 (x2)
%3# ----- ----- MC231CR (x1)
3WITCH SSW-GS (x1) -----
-ISCELLANEOUS
-INI3CREWDRIVER
3HIFT'ATE0LATE
-ANUAL
3ERVOMOUNTINGHARDWAREANDSERVOHORNSONLYSERVOSET
NOTE:FutabaFHSSsystem,T4YWDtransmitterandR214GF-Ereceiver,does not
workwithcurrentFutabaFASSTsystems.PleaseuseT4YWDandR214GF-Einpairs.
FutabaFASSTsystemandFHSSsystemarenotcompatibleeachother.

9
Nomenclature/Handling
TransmitterT4YWD
Antenna (Built-in)
4CH
（3HIFT）
1CH
（Steering ）
2CH
（Throttle ）
3CH
（AUX ）
1CHTrim
4CH Trim
3CH Trim
2CH Trim
Stick Stick
Shift Gate Plate
Grip Handle
Power Down Switch
GREEN LED Light
Servo Reversing
Switch
Power Switch
7HENSLIDUPWARD
THEPOWERISTURNEDON
RED LED Light
)TBLINKSAT,OW"ATTERY
)FPOWERSUPPLY/. OF
THIS3WITCH ISCARRIED
OUTPUSHED ITWILL
BECOMETHE LOWPOWER
MODEOF ATRANSMITTING
OUTPUT
!TTHIS TIMERED,%$
WINKSEARLY
)TBLINKSATSWITCH/.
4HEANTENNAISINSIDETHISPART
)TATTACHESWHENREQUIRED
!DJUSTSTHESTEERING IN
SMALLINCREMENTS SOTHE
MODELWILLRUNSTRAIGHT
!DJUSTSTHETHROTTLEINSMALL
INCREMENTSSO THEMODELWILL
NOTMOVEATNEUTRAL
󾾝WARNING
Donotcover/holdthebuilt-inantennapartofT4YWDtransmitterbyyourhand
duringrunning.
$ONOTPUTANYCONDUCTIVEPLATESTICKERONTHEANTENNAPART
/THERWISETHEOPERATINGRANGEMAYBECOMESHORTER

10
:KHQWKH/('VWDUWVEOLQNLQJFKDQJH
the batteries immediately.
（Ifvoltageisabout4.0vorless,ablink
indicationoftheREDLED.）
Low Battery :
Battery Cover
(4 AA size batteries)
12EMOVETHEBATTERYCOVER
FROMTHETRANSMITTERBY
SLIDINGITINTHEDIRECTIONOF
THEARROWINTHElGURE
22EMOVETHEUSEDBATTERIES
3,OADTHENEW!!SIZE
BATTERIES0AYVERYCLOSE
ATTENTIONTOTHEPOLARITY
MARKINGSANDREINSERT
ACCORDINGLY
43LIDETHEBATTERYCOVERBACK
ONTOTHECASE
The low battery alarm is meant to be
a safety feature only. Do NOT operate
your radio below low battery. Always
shut your radio off as soon as possible
after the low battery warning loss of
control.
Battery Replacement Method 󾾝CAUTION
￸Alwaysbesureyoureinsertthe
batteriesinthecorrectpolarity
order.
Ifthebatteriesareloaded
incorrectly,thetransmittermaybe
damaged.
￸Whenthetransmitterwillnotbe
usedforanyshortorlongperiod
oftime,alwaysremovethe
batteries.
Ifthebatteriesdohappentoleak,
cleanthebatterycaseandcontacts
thoroughly.Makesurethecontacts
arefreeofcorrosion.
(The space which
is not used )

11
●Connectors
"#(3ERVO"ATTERYCONNECTOR
#(3ERVO
4HROTTLE3ERVO#(
3TEERING3ERVO#(
!BATTERYCANCONNECTANYSLOT
●Built-in antenna
TheR214GF-E
receiveris
designedtobe
usedonlyforEP
Carmodels.
Receiver R214GF-E Servo S3003
Link SwitchLED
Servo Horn
to Receiver Mounting
Flange
󾾝WARNING
Keepthereceiverasfarawayfromthemotor,ESCandothernoisesourcesas
possible.
E.S.C. MC231CR
Motor connector
Connects to the motor.
(Orange) is positive. (Blue) is negative.
If the motor rotates in the wrong
direction, interchange the connections of
this connector.
NiCd/NiMH battery connector
Connects to the running NiCd/NiMH battery.
(Red) is positive. (Black) is negative.
Receiver connector
Connects to the receiver throttle channel.
Miniature screwdriver
Accessory. Use to press the
pushbutton switch.
Checker LED
Power switch
Pushbutton
switch
MC231CR
(Orange)
(Blue)
(Black)
(Red)
Applicable motors(Number of turns is criteria.)
•Use the MC231CR with a motor with 23T or more turns.
*If a motor with a number of turns smaller than the above is used, the heat
protector and overcurrent protection circuit may operate. The number of turns
of the motor is only one criteria. Depending on the running conditions, the
protection circuit may operate even if the condition above is satisfied.
NiCd/NiMHbattery 6~7 cells (7.2~8.4V)

12
ReceiverandServoConnection
As you connect the receiver, servos and other components, do so in accordance with the
$VVHPEO\3UHFDXWLRQV
Connectionswhen a E.S.C. MC231CR used.
(CH4)
(CH4)
(CH3)
Throttle Servo
Receiver
Receiver
To Receiver
Battery
Steering Servo
Steering Servo
CH4 Servo
CH4 Servo
E.S.C.
Power Switch
Power Switch
Connects to Motor
Connects to Battery
E.S.C not used Model
Assembly / Adjustment

13
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RSHUDWLRQWKHUHFHLYHUPXVWEHOLQNHG ZLWKWKH,'FRGHRI WKHWUDQVPLWWHUZLWK ZKLFK
LWLVEHLQJSDLUHG2QFHWKHOLQNLVPDGHWKH,'FRGHLVVWRUHGLQWKHUHFHLYHUDQG
no further linking is necessary unless the receiver needs to be used with an other
WUDQVPLWWHU)RU75VHWWKHOLQNLVDOUHDG\GRQHDWIDFWRU\
HowtoLinkTransmitterandReceiver
Push and hold the
Link Switch
2ECEIVINGNOSIGNALS OFF
2ECEIVINGSIGNALS On
2ECEIVINGSIGNALSBUT)$ISUNMATCHED Blink
within 0.5 meter.
Link procedure
1"RINGTHETRANSMITTER ANDTHERECEIVER
CLOSETOEACHOTHERWITHINMETER
24URNONTHE
TRANSMITTERANDTHE
RECEIVER
30USHANDHOLDTHE,INK
3WITCHOFTHERECEIVER
47HEN THE LINK IS COMPLETE THE ,%$ IN THE
RECEIVERCHANGESTOSOLIDGREEN
3OHDVHUHIHUWKHWDEOHEHORZIRU/('VWDWXVYVUHFHLYHUVFRQGLWLRQ
LED status vs receiver's condition:
󾾝WARNING
Afterthelinkingisdone,pleasecyclereceiverpowerandcheckthatthereceiverto
belinkedisreallyunderthecontrolofthetransmitter.
￸Donotperformthelinkingprocedurewithmotor'smainwireconnectedasitmay
resultinseriousinjury.

14
AssemblyPrecautions
󾾝WARNING
￸Checkthereceiver,servos,andbatteryconnectors,tobesuretheyarefirmly
connected.
Ifaconnectorisnotfullyinserted,vibrationmaycausetheconnectortoworkloose
whilethemodelisoperating.Thiswillresultinlossofcontrol.
￸Operateeachservohornoveritsfullstrokeandcheck
toseethatthelinkagedoesnotbindorisnottoo
loose.
Excessiveforceappliedtotheservohornbybindingor
poorinstallationmayleadtoservoproblemsandresultin
lossofcontrol.
￸Isolatethereceiverfromvibrationbyattachingtothechassisormountingplate
withthickdoublesidedtape.
￸Anycontactwithmoisture(waterorcondensation)maycausereceivermalfunction
andlossofcontrol.
￸Usetheservohornscrew.
Whentheservohorncomesoff,itbecomeslossofcontrol.
￸Keepalldevicesthatemithighfrequencynoise,suchasmotors,batteries,and
wiringthathandlesheavycurrentloads,atleast1/2inchawayfromthereceiver.
Highfrequencynoisewillcauseadecreaseinoperatingrangeandcouldcauselossof
control.
￸Installelectronicspeedcontrollerheatsinksaswellasothercomponentsthat
conductelectricitymustnotcontactwithaluminum,carbonfiberorothermaterials
thatconductelectricity.
If,forexample,theelectronicspeedcontrollercomeloosewhilethemodelruns,and
touchesaluminumchassis,ashortcircuitmayoccuranditcauseirreparabledamage
tothesystemaswellaslossofcontrol.
￸Noisesuppressioncapacitorsshouldbeinstalledonalmostallmotors.
Ifthepropercapacitorsarenotinstalled,highfrequencynoisewillreducerange
andcauselossofcontrolalongwithvariousotherproblems.
￸Inspectalllinkageinstallationsandanypointwheremetalcouldcomeincontact
withothermetalparts.Makesurethesepartsdonottouchothermetalpartsunder
vibration.
Shouldalinkageorothermetalpartscomeincontactwithothermetalpartsunder
vibration,thehighfrequencynoisegeneratedbythiscontactwillcauseinterference
andpossiblelossofcontrol.
󾾝CAUTION
Donotdisassembleanypartofthissystemthatisnotspecifiedintheinstruction
manual.
Futabawillnotberesponsibleforanydamageduetoimproperdisassemblyofany
partoftheradiocontrolsystem.
Caution ！
Awhiningnoiseindicates
thatthesteeringservois
improperlyset.

15
TransmitterSet-UpProcedures
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NEUTRAL, HIGH, AND BRAKE MAX POINT SETTINGS
Before setting each point, set the transmitter throttle channel trim to neutral.
Turn on the power in transmitter amp order.
1
2
Transmitter throttle operation
･Neutral state
･Press the pushbutton switch.
(0.5 secs or longer)
(Confirmation beep sounds)
･Continuous single blink
MC231CR
(Pushbutton switch operation) (Checker LED)
Full high
Full brake
Neutral point
setting
3
･Full high state
･Press the pushbutton switch.
(Confirmation beep sounds)
･Continuous double blink
･Continuous rapid blink
High point
setting
4
･Full brake state ･Press the pushbutton switch.
(Confirmation beep sounds.)
･If the LED goes out,
setting is complete.
Brake MAX
point setting
* Since the data is read at the end of setting of all points, the points cannot be set independently.
* If the amp power was turned off during setting, the setting points cannot be memorized. (The previous settings are retained.)
* The confirmation beep sounds only when the motor was connected.
If the LED does not go off
but blinks rapidly, setting
was not performed
normally. Repeat setting
from "Neutral point
setting".
E.S.C. MC231CR
Servo Horn Installation Instructions
1#ONNECT THE RECEIVER SERVOS AND OTHER COMPONENTS AND
THENTURNONTHEPOWERSWITCHESTOTRANSMITTERANDRECEIVER
*Both servos will move to the neutral position.
2!TTHISTIMEINSTALLTHESERVOHORNINTHEMANNERDESCRIBEDIN
THEINSTRUCTIONMANUALPROVIDEDWITHTHEMODELTHISSYSTEM
WILLBEUSEDIN
Reversing The Servo Operation Direction
3HOULDTHESERVOOPERATEINTHEOPPOSITE
DIRECTION REQUIREDFOR YOURAPPLICATIONREVERSE
THEDIRECTIONWITHTHESERVOREVERSING
REV.:Reverse
NOR.:Normal

16
Trim
CH1Trim:Steering（1CH）
CH2Trim:Throttle（2CH）
CH3Trim:AUX（3CH）
CH4Trim:AUX（4CH）
4YWD Functions
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Servo install
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servo horn hole position and linkage so both are parallel. When a servo saver is used, place it as
close to center position as possible. Be sure the steering trim on the transmitter is at the neutral
position.
Trim Operation And Maximum Position
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recheck your installation for maximum position.
When Trim usage is extreme
,ILWWDNHVPRVWRI\RXUWULPPRYHPHQWWRJHWDVHUYRWRWKHQHXWUDOSRVLWLRQUHSRVLWLRQ
the servo horn or servo saver on the servo and inspect your linkage installation.
90°
90°
Parallel
Servo Saver
Direct Servo Saver Horn

17
StickAdjustment
MC231CROperation
A
LeverHead
B
LeverHead
Forward:
Throttlestickisturned
up,thespeedincreases.
Brake:
Throttlestickisturned
down,thebrakeworks.
Reverse:
Operationcanbeswitched
toreverseoperationby
returningthethrottlestick
fromthebrakepositionto
theneutralposition.Then
turndownthestick.
Stickisturned
downfromthe
neutral.
$GMXVWPHQWRIWKHVWLFNOHYHUOHQJWK
<RXFDQDGMXVWWKHOHQJWKRIVWLFNOHYHUVDV\RXOLNH,WLVUHFRPPHQGHGWRDGMXVWWKH
length of the sticks in line with your hand size.
1
(OLD THE LEVER HEAD " AND
TURNTHELEVERHEAD!
COUNTERCLOCKWISE4HE LOCK
WILLBERELEASED
2
4URNTHELEVERHEAD!
CLOCKWISEASYOUHOLDTHE
LEVERHEAD " AFTER PLACING
ITASYOULIKE

18
MC231CRFunction
BRAKE/REVERSE OPERATING INSTRUCTIONS
Operation can be switched to reverse operation by returning the throttle stick from the brake position to the neutral
position.
CANCELLING THE REVERSE FUNCTION
The amp reverse function can be cancelled by the following method so that the model can be used even in races
that prohibit reverse running. (Brake operation only)
While pressing
the pushbutton switch, set the power switch to ON.
ON
MC231CR
(Pushbutton switch operation) (Power switch)
1
Reverse
function
cancellation
* When desired, you can enable the cancelled reverse
function by repeating the operation shown at the left.
(The reverse function is switched alternately.)
CHECKER LED DISPLAY
The amp operates linearly in proportion to the amount of forward, reverse, and brake operation. The amp operating
state can be checked with the checker LED as shown below.
PROTECTION CIRCUIT OPERATION
The following protection circuits are built into the MC231CR. When a protection circuit operates, remove the
cause before operating the model again.
Operation
Amp power ON
Checker LED display
(Reverse operation set)
Single blink
(Single confirmation beep)
(Only brake operation set)
Off
On
On
Off
Off
Double blink
(Two confirmation beeps)
Blinks. (Confirmation
beep also sounds.)
* Confirmation beep only sounds when the motor was connected.
High point
Neutral point
Brake MAX point
*Becomes brighter nearer the high
point.
*Becomes brighter nearer the
brake MAX point.
*Not used with PCM receivers.
*When the transmitter is OFF, this function is
not performed in environments such that the
servo operates erroneously.
When an overcurrent flows due to an output short circuit, etc., the overcurrent protection circuit automatically
limits the current to protect the FET.
Remove the cause of the short circuit, etc. before operating the model again.
(Amp power left on alarm)
When the transmitter power
was turned off first.
Forward
Reverse
/brake
Overcurrent
protection
When abnormal heating of the FET due to an overload, etc. is detected, the heat protector operates so that
the speed is gradually reduced.
When the FET temperature drops, the heat protector automatically resets. However, remove the cause
of the overheating before operating the model again.
Heat protector
When the NiCd/NiMH battery voltage drops, this function limits the motor output current and ensures steering
operation.
After the speed drops, immediately recover the vehicle.
Low voltage
operation

19
PowerDownMode
Range Testing Your R/C System
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running. The T4YWD transmitter incorporates a system that reduces its power output and allows you to
perform such a range check.
Areleaseofapowerdownswitchwill
cancelpowerdownmode.
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,QWKHFDVHRIDEQRUPDOLWLHVLWGRHVQRWUXQ,WPXVWEHFKHFNHGDQG¿[HG
Pushandholdthe
powerdownswitch
Turnon
󾾝WARNING
￸Donotoperateintherangecheckmode.
*Sincetherangeoftheradiowavesisshort,ifthemodelistoofarfromthetrans-
mitter,controlwillbelostandthemodelwillcrash.
Power down mode Instructions
10USHANDHOLDTHEPOWERDOWN
SWITCHOFTHETRANSMITTER
24URNONTHETRANSMITTER
3)TISSHOWNTHATRED,%$BLINKS
QUICKLYANDHASBECOMEPOWER
DOWNMODE)NORDERTOCANCELA
POWER DOWN A POWER DOWN SWITCH
ISRELEASED%VENIFITCONTINUES
PUSHING A POWER DOWN SWITCH IT IS
CANCELEDINSECONDS

20
Ratings
Reference
Communication method:
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Maximum operating range:
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Transmitter T4YWD
)+66V\VWHP6WLFNW\SHFKDQQHOV
Transmitting frequency:
2.4GHz band
Power requirement:
'U\FHOOEDWWHU\3HQOLJKW[9
Current drain:
100mA or less
Transmission antenna:
ȜGLSROH%XLOWLQ
Receiver R214GF-E
)+666)+66V\VWHPFKDQQHOV8VHGRQO\IRU
(3&DUPRGHOV
Power requirement:
9〜7.495HFKDUJHDEOHEDWWHU\
Size:
[[PPH[FOXGLQJDSURMHFWLRQSDUW
Weight:
JR]
Servo S3003
6WDQGDUGVHUYR
Power requirement:
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Current drain:
P$DW9,GOH
Output torque:
4.1kgfFPLQR]DW9
Operating speed:
VHFGHJUHHDW9
Size:
[[PP[[LQ
Weight:
JR]
E.S.C. MC231CR
(OHFWURQLFVSHHGFRQWURO
Operating system:
Forward, reverse, and brake operations are all
linear.
Power requirement:
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PWM frequency:
N+]¿[HG
Setting:
2QHWRXFKLQSXWE\SXVKEXWWRQVZLWFK6HWGDWDLV
VDYHGWREXLOWLQ((3520
Current capacity (FET rating):
)RUZDUG $UHYHUVH $
Size:
[[PP[[LQ
H[FOXGLQJSURWUXGLQJSDUWV
Silicon cord gauge size:
$:*HTXLYDOHQW
Weight:
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LQFOXGLQJFRQQHFWRUVDQGVZLWFKHV
BEC voltage:
9
3PECIlCATIONSANDRATINGSARESUBJECTTOCHANGEWITHOUTPRIORNOTICE
NOTE:FutabaFHSSsystem,T4YWDtransmitterandR214GF-Ereceiver,does
notworkwithcurrentFutabaFASSTsystem.PleaseuseT4YWDandR214GF-Ein
pairs.FutabaFASSTsystemandFHSSsystemarenotcompatibleeachother.