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Thank you for purchasing a Futaba SKYSPORT 4YF.

Before using your SKYSPORT 4YF, read this manual carefully and use your R/C set safely.

After reading this manual, store it in a safe place.

See the glossary page 19 for a definition of the special terms used in this manual.

Application, Export, and Modification

1. This product may be used for model airplane use, if on the correct frequency. It is not intended for
use in any application other than the control of models for hobby and recreational purposes. The
product is subject to regulations of the Ministry of Radio/Telecommunications and is restricted under
Japanese law to such 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 which govern 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 goverment authorities may be required. If you have purchased this prod-
uct 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 Control
Regulations, and an application for export approval must be submitted. In the US, use of 72MHz
(aircraft only), 75MHz (ground models only) and 27MHz (both) frequency bands are strictly regu-
lated by the FCC. This equipment must not be utilized to operate equipment other than radio con-
trolled models. Similarly, other frequencies (except 50MHz, for HAM operators) must not be used
to operate models.

3. Modification, adjustment, and replacement of parts: Futaba is not responsible for unauthorized
modification, adjustment, and replacement of parts on this product. Any such changes may void the
warranty.

The Following Statement Applies to the Receiver (for U.S.A.)

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undes-
ired operation.

Battery Recycling (for U.S.A.)

The RBRC

TM

 SEAL on the (easily removable) nickel-cadmium battery contained in

Futaba products indicates that Futaba Corporation of America 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 within the United States. The RBRC

TM

 program provides

a convenient alternative to placing used nickel-cadmium batteries into the trash or mu-
nicipal waste system, which is illegal in some areas.

You may contact your local recycling center for information on where to return the spent battery.
Please call 1-800-8-BATTERY for information on Ni-Cd battery recycling in your area. Futaba Cor-
poration of America's involvement in this program is part of its commitment to protecting our environ-
ment and conserving natural resources.

NOTE: 

Our instruction manuals encourage our customers to return spent batteries to a local recycling

center in order to keep a healthy environment.

RBRC

TM

 is a trademark of the Rechargeable Battery Recycling Corporation.

Warning: This product contains a chemical known to cause cancer and birth defects (or other

reproductive harm).

•No part of this manual may be reproduced in any form without prior permission.
•The contents of this m anual are subject to change without prior notice.
•This manual has been carefully written. Please write to Futaba if you feel that any corrections or clarifications should

be made.

•Futaba is not responsible for the use of this product.

Summary of Contents for SKYSPORT 4YF

Page 1: ...s Futaba is not responsible for unauthorized modification adjustment and replacement of parts on this product Any such changes may void the warranty The Following Statement Applies to the Receiver for U S A This device complies with part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interf...

Page 2: ...SAFETY 2 Meaning of Special Markings 2 Precautions During Flight 2 Nicd Battery Charging Precautions 4 Storage and Disposal Precautions 4 Other Precautions 5 USING OTHER FUNCTIONS 14 Using the Frequency Board 14 Servo Horn 14 Non slip Adjustable Lever Head 14 Trainer Function 15 Charging the Nicd Battery 16 REFERENCE 17 Ratings 17 Troubleshooting 18 Glossary 19 TABLE OF CONTENTS ...

Page 3: ...or the model itself may cause death or property damage Meaning of Special Markings Pay special attention to the safety at the parts of this manual that are indicated by the following marks DANGER Mark Meaning CAUTION WARNING To ensure safe use observe the following precautions Do not fly when you are tired sick or intoxicated Fatigue illness or intoxication will cause a loss of concentration or no...

Page 4: ...ch After setting the transmitter throttle lever to maximum slow 1 Turn on the transmitter power switch 2 Then turn on the receiver power switch When turning off the power switch After stopping the engine 1 Turn off the receiver power switch 2 Then turn off the transmitter power switch If the power switch is turned off in the opposite order the engine may go to full throttle unexpectedly and cause ...

Page 5: ...Do not short the nicd battery connec tor terminals Shorting the terminals may cause sparking and overheating and result in burns or fire Do not drop or apply strong shock to nicd battery The battery may be shorted and cause overheating or breakage and electro lyte leakage and result in burns or damage by chemical mater Storage and Disposal Precautions WARNING Do not leave the digital proportional ...

Page 6: ...bove may cause distortion and trouble If the digital proportional R C set will not be used for a long time remove the batteries from the transmitter and the model and store them in a dry place If the batteries are left in the trans mitter and model the battery elec trolyte may leak out and degrade the performance and shorten the life of the transmitter and model Nicd battery electrolyte The electr...

Page 7: ...et Charger Receiver Nicd Battery or Battery holder Transmitter Receiver Servo NR 4QB R127DF R136F T4YF S3004 x4 Battery holder not for USA Servo horn frequency board Servo tray Neck strap Receiver Swich Extension cord R148DF S3101 x2 S3003 x3 NR 4K NR 4J Others If the set contents are incomplete or if you have any questions please contact the dealer ...

Page 8: ...Switch Switches that reverse the direction of operation of the servos The lower position is the normal side and the upper position is the reverse side Operating direction display Channel display AIL Aileron CH1 ELE Elevator CH2 THR Throttle CH3 RUD Rudder CH4 Hook Carrying Bar Elevator Mode 1 Throttle Mode 2 Trim Lever Elevator Mode 1 Throttle Mode 2 Rudder Stick Rudder Trim Lever Power Switch In ...

Page 9: ...e trainer cord is sold separately See page 15 for the trainer function opera tion instructions Trainer jack Use when replacing the battery Slide the cover downward while pressing the part marked Battery cover See page 16 for a description of the charging method Charging jack TRANSMITTER T4YF Side Panel ...

Page 10: ...rystal is replaced from the side of the receiver Output battery connector 1 Aileron servo CH1 2 Elevator servo CH2 3 Throttle servo CH3 4 Rudder servo CH4 5 Not used CH5 6 Not used CH6 7 Not used CH7 8 Not used CH8 B Battery connector DUAL ONVERSION C F P R 1 4 8 D F F M 8 CHANNEL MICRO RECEIVER 1 2 3 4 5 6 7 8 B R148DF Antenna Mounting flange Servo horn To receiver S3003 S3004 S3101 Use the horn ...

Page 11: ...nd the plane climbs UP opera tion When the elevator stick is pushed forward the elevator is lowered the tail of the plane is forced up the air flow applied to the wings is changed the lifting force is decreased and the plane dives DOWN operation THROTTLE OPERATION When the throttle stick is pulled back the engine throttle lever arm moves to the SLOW low speed side When the throttle stick is pushed...

Page 12: ... switch Connection Example Receiver R127DF Aileron CH1 Elevator CH2 Throttle CH3 Rudder CH4 Nicd battery The number of servos depends on the set 7 6 5 4 3 2 1 B Dual Conversion FP R127DF FM 7CHANNEL RECIVER Connection Example Receiver R136F Aileron CH1 Elevator CH2 Throttle CH3 Rudder CH4 Receiver switch Receiver battery holder Insert four batteries When using 5 or more servos use the nicd battery...

Page 13: ...the flight range and cause a crash Antenna installation For aircraft attach the antenna to the top of the tail Servo Throw Operate each servo horn over its full stroke and adjust so that the pushrod does not bind or is not too loose Unreasonable force applied to the servo horn will adversely affect the servo and drain the battery quickly Servo Installation Install the servos to the servo mount etc...

Page 14: ... aileron elevator and rudder neutral adjustment and left right up down throw Check that when trimmed to the center the servo horn is perpendicular to the servo and check the neutral position of the fuselage control surfaces aileron elevator rudder etc If the neutral position has changed reset it by adjusting the length of the rod with the linkage rod adjuster When the throw is unsuitable different...

Page 15: ...long the slot with cutters etc Servo Horn Spare servo horns are supplied with the digital proportional R C set Use them ac cording to the application Use the horn set screw sup plied with the servo If a long screw is used the interior of the servo may be damaged Non slip Adjustable Lever Head The length of the stick lever head can be adjusted 1 Unlock lever heads A and B by turning them in the arr...

Page 16: ...witch is not pressed the instructor has control When the trainer switch is pressed control is transferred to the student Student side Never turn on the power switch Connect the student and instructor transmitters with the trainer cord WARNING Never turn on the student transmitter power switch Turning on the power switch will cause interference and a crash Set the student and instructor transmitter...

Page 17: ...ght 4At the end of charging disconnect the charger from the AC outlet WARNING Never plug the special charger into an AC outlet other than specified If the charger is plugged into an AC outlet other than specified overheating sparking etc may cause burns fire etc Use the special charger or digital proportional R C quick charger sold separately to charge the digital proportional R C nicd battery Ove...

Page 18: ... 72 MHz Intermediate frequency 455kHz Power requirement 6V penlight battery x4 or 4 8V nicd battery common with servo Current drain 9 5mA Size 33 4x50 3x18 1mm Weight 27 8g RECEIVER R127DF 7 channels FM receiver Receiving frequency 50 60 72 75 MHz Intermediate frequency 1st IF 10 7MHz 2nd IF 455kHz Power requirement 4 8 or 6V common with servo Current drain 10 0mA Size 64 3x35 8x21 0mm Weight 40 5...

Page 19: ...fuselage side Motor electric motor plane Noise countermea sures Install a noise absorbing capacitor 75 MHz Band car boat only 75 410 61 75 610 71 75 810 81 75 430 62 75 630 72 75 830 82 75 450 63 75 650 73 75 850 83 75 470 64 75 670 74 75 870 84 75 490 65 75 690 75 75 890 85 75 510 66 75 710 76 75 910 86 75 530 67 75 730 77 75 930 87 75 550 68 75 750 78 75 950 88 75 570 69 75 770 79 75 970 89 75 5...

Page 20: ...sing function it is the normal side The opposite side is the reverse side Proportional Because today s radio control sets control servos in proportion to stick operation radio control equipment is called proportional Rudder RUD Tail control surface that controls the direction of the aircraft Reverse REV With the servo reversing function this is used to mean the reverse side The opposite side is th...

Page 21: ...20 REFERENCE FUTABA CORPORATION Makuhari Techno Garden Bldg B6F 1 3 Nakase Mihama ku Chiba 261 8555 Japan Phone 043 296 5119 Facsimile 043 296 5124 FUTABA CORPORATION 2003 04 ...

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