Seagull Models Extra 300S User manual

Kitfeatures
• Ready-made—minimal assembly & finishing required.
• Ready-covered—including decals, trim & covering.
• Factory-installedpushrods.
• Factory-installedmetalenginemount.
• Factory-pinned&gluedcontrolsurfacehingesforultimatesafety.
• Comprehensivehardwarepackincludingwheels,tank,spats,undercarriage& spinner.
• Photo-illustratedstep-by-stepAssemblyManual.
WARNING
•Thisaicrafthasbeendesignedforintermediatelevelflyers.First timepilot shouldbea
experienced flyer(proficientpilot).
•This aicraft is desgined to be powered a 2 stroke .46 engine or a 4 stroke .53 engine.
Installationofenginesother itcouldtolead aseiousaccidentordamage tproperty.
Hand-made Almost Ready to Fly R/C Model Aircraft
ASSEMBLY MANUAL
Made in Vietnam

EXTRA 300S Instruction Manual
2
INTRODUCTION
Thank you for choosing the EXTRA 300S ARTF by SEAGULL MODELS. The EXTRA 300S was
designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is
easy to fly and quick to assemble. The airframe is conventionally built using balsa, plywood and
veneer to make it stronger than the average ARTF , yet the design allows the aeroplane to be kept
light.You willfind thatmost oftheworkhasbeendonefor youalready. Thepushrods arepre-made
to the correct lengths, the motor mount has been fitted and the hinges are pre-installed and pinned
for security. Flying the EXTRA 300S is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your EXTRA 300S . Use the parts listing below to
identify all parts.
WARNING
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is
capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & RESPONSIBILITY.
IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
proceduresdesigned tohelpthe newpilotonhis waytosuccessfulR/C flight.Theywill alsobeable
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED
!.46-.61 2-stroke engine.
!Computer radio with five servos.
!Glow plug to suit engine.
!Propeller to suit engine.
!Protective foam rubber for radio
system.
!Siliconefuel line.
TOOLS & SUPPLIES NEEDED
!Thick cyanoacrylate glue.
!30 minute epoxy.
!5 minute epoxy.
!Hand or electric drill.
!Assorted drill bits.
!Modellingknife.
!Straight edge ruler.
!2mm ball driver.
!Phillips head screwdriver.
!220 grit sandpaper.
!90° square or builder’s triangle.
!Wire cutters.
!Masking tape & T-pins.
!Thread-lock.
!Paper towels.
PARTS LISTING
FUSELAGE ASSEMBLY
!(1) Fuselage.
WING ASSEMBLY
!(1) Right wing half with pre-installed
aileron.
!(1) Left wing half with pre-installed
aileron.
!(1) Plywood wing dihedral brace.
!(1) Covering strip for centre section
joint.
Tail section assembly
!(1) Vertical stabilizer with pre-
installedrudder.
!(1) Horizontal stabilizer with pre-
installedelevator halves.
Some more parts.
HARDWAREPACK
COWLING.
Landing gear.....

EXTRA 300S INSTRUCTION MANUAL
3
NOTE: To avoid scratching your new aero-
planewesuggestthatyoucoveryour
workbench with an old towel. Keep a
couple of jars or bowls handy to hold
the small parts after you open the
bags.
Pleasetrialfitallparts.Makesureyou
have the correct parts and that they
fit and are aligned properly before
gluing! This will ensure proper as-
semblyasthe EXTRA300S ismade
from natural materials and minor ad-
justments may have to be made.
The paint and plastic parts used in
this kit are fuel proof. However, they
arenottolerantofmanyharshchemi-
cals including the following: paint
thinner, cyano-acrylate glue accel-
erator,cyanoacrylategluede-bonder
andacetone.Do not let these chemi-
calscome in contact with the colours
onthecovering and the plastic parts.

EXTRA 300S Instruction Manual
4
WING ASSEMBLY
NOTE: We highly recommend using 30
minute epoxy as it is stronger and
providesmoreworkingtime,allowing
thebuildertoproperlyaligntheparts.
Using fast cure epoxy when joining
the wing halves could result in the
glue drying before the wing halves
arealignedproperlywhichmayresult
in failure of the wing centre section
during flight.
! 1. Locate the plywood wing dihedral
brace.Using a ruler, locate its centre
and draw a vertical line .
! 2. Test fit the dihedral brace into each
wing half. The brace should slide in
easily up to the centreline that you
drew. If not, use 220 grit sandpaper
with a sanding block and sand down
theedges andendsofthe braceuntil
it fits properly.
the top and bottom as well as the sides of the
dihedral brace. Use enough epoxy to fill any
gaps.
! 4. Insertthedihedralbraceintothedihe-
dral box up to the centreline. With
paper towels and rubbing alcohol,
wipe off any excess epoxy that may
have squeezed out of the joint. Next
pour some epoxy into the dihedral
box in the other wing panel. Apply
epoxytotheexposedportionthebrace
and to the wing root of both wings.
Carefully slide the two wing halves together
and firmly press them together, allowing the
excess epoxy to run out. There should not be
any gap in the wing halves. Use rubbing
alcohol and a paper tower to clean up any
excess epoxy.
! 3. Remove the brace when satisfied
withitsfitineachwinghalf.Coatboth
sidesofonehalfofthedihedralbrace
with 30 minute epoxy. Next, pour
some epoxy into the dihedral box in
onewingpanel.Makesureyoucover
Applymaskingtapeatthewingjointoholdthe
winghalvestogethersecurely. Allowthe epoxy
to cure before installing the aileron servos.
Centre line.
Epoxy

EXTRA 300S INSTRUCTION MANUAL
5
Use a small weight (Weighted fuel pick-up)
and thread to feed the servo connector
through the wing as shown.
INSTALLING THE AILERON SERVOS.
!1) Remove servo tray from the each panel
of wing. Install servo and servo arm. See
pictures bellow.
Attachthe string to one end ofservo lead and
carefully thread it though the wing. Once you
havethreadthelead throughtthewing,remove
the string and repeat for the other servo lead.
Use masking tape to secure the leads to the
wing and prevent them from falling back into
the wing
Because the size of servos differ, you
may need to adjust the size of the
precut opening in the mount. The notch
in the sides of the mount allow the servo
lead to pass through.
!2) Install the rubber grommets and brass
colletsonto the aileronservo. Test fit the servo
into the aileron servo mount.
Small weight
Thread
Small weight.
Thread.
Servo (2pcs).

EXTRA 300S Instruction Manual
6
!3) Install the aileron servo tray into the
servo mount.
Repeat the procedure for the other wing
half.
AILERON LINKAGE
INSTALLING THEAILERONLINKAGE
!1) Using a ruler & pen to draw a straight
line as below picture.
! 2) Locate nylon control horns, nylon con-
trol horn backplates and 2 machine screws.
Servoarm
Servo
electric
wire
Thread
Servo arm
2MM x 20MM

EXTRA 300S INSTRUCTION MANUAL
7
! 3) Position the aileron horn on the bottom
side of aileron. The clevis attachment holes
should be positioned over the hinge line as
shown below.
!4) Using a 1mm drill bit and the control
horns as a guide, drill the mounting holes
through the aileron halves.
! 6)Threadone clevis control hornontoeach
aileron torque rod. Thread the clevis on until
theyareflushwiththeends of the torque rods.
! 5) Mount the control horns by inserting the
screws through the control horn bases and
aileron halves, then into the mounting
backplates.
Do not overtighten the screws or the
backplates may crush the wood.
cut
clevis
AileronTorquerod
Control horn
ControlHorn
MountingScrews MountingPlate

EXTRA 300S Instruction Manual
8
Attachthe siliconefuel,feedand pressurepipe
tothetank.Thelowerpipeisthe‘feed’andthe
upper is the ‘pressure’ . The silicone fuel pipe
is the next of feed pipe.
Slide the tank into the fuselage from inside so
that the neck is at the top of the fuselage and
itlocatesthroughtheengine bulkhead. Gently
secure it to the top horizontal former with the
cable tie .
INSTALLING THE STOPPERASSEMBLY
!1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
!2) Usingamodeling knife, cut one length
ofsiliconfuelline. Connectoneendofthe line
to the weighted fuel pickup and the other end
to the nylon pickup tube.
!3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
To set the angle of the vent tube use a lighter
or heat gun to heat the tube (do not melt the
tube).
PARTSREQUIRED
FUEL TANK
!{1} Molded NylonFuelTank
!{1} Preassembled StopperAssembly
!{1} Metal WeightedPick-Up
!{1} Silicon tube
!5) With the stopper assembly in place,
the weighted pickup should rest away from
therear of the tank and move freely inside the
tank. The top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
!6) When satisfied with the alignment of
thestopper assemblytightenthe 3mmx20mm
machine screw until the rubber stopper ex-
pands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
When the stopper assembly is installed in the
tank, the top of the vent tube should rest just
below the top surface of the tank. It should
not touch the top of the tank.
!4) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using a
modeling knife. If flashing is present, make
sure none falls into the tank.
You should mark which tube is the vent
and which is the fuel pickup when you
attach fuel tubing to the tubes in the stopper.
Once the tank is installed inside the fuselage,
it may be difficult to determine each of them.
Vent tube
Fuel Pickup Tube
Fuel fill Tube

EXTRA 300S INSTRUCTION MANUAL
9
MOUNTINGTHEENGINE
!1)Trial fit yourengineonthemotormount.
The engine should be positioned so there is
ample clearance in the cowling for spinner
backplate mounted to the prop drive shaft.
!2) Marking 4 points on the plastic motor
mount.
!3) Screw 4 pilot holes with 5 mm diam-
eter.
!4) Your engine on the motor mount by
mounting with 4 bolts, 8 washers, and 4 nuts
provided.
A drop C/A glue on the bolt threads will help
prevent loosening in flight.
Blow through one of the lines to ensure
the fuel lines have not become kinked
inside the fuel tank compartment. Air should
flow through easily.
!5)AttachtheZ-Bendin the pushrod wire to
thethrottle armonthe carburetor.Youwill need
to remove the throttle arm from the car-
buretor to be able to attach the Z-bend. When
complete, reattach the throttle arm to the car-
buretor.
WHEELAND WHEEL PANTS
PARTSREQUIRED
!1)Assemble andmountingthe wheelpants
as shown in the following pictures.
Vent tube
Fuel fill Tube Fuel Pickup
Tube
Pushrod wire
4MM x 30MM
4MM x 30MM

EXTRA 300S Instruction Manual
10
!!
!!
!2) A drop of C/A glue on the wheel collar
screws will help keep them from coming lose
duringoperation.
Repeat the process for the other wheel.
INSTALLING THE MAIN LANDING GEAR
!!
!!
!1) The blind nuts are already mounted in-
side the fuselage.
!!
!!
!2)The holes in the landinggear should be
to accept the mounting bolts
Landing gear

EXTRA 300S INSTRUCTION MANUAL
11
COWLING
! 1) Slide the fiberglass cowl over the en-
gine and line up the back edge of the cowl
with the marks you made on the fuselage.
!!
!!
!3) Using the hardware provided, mount
the main landing gear to the fuselage.
!2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl with thecrankshaftofthe engine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening. Hold the cowl firmly in place using
pieces of masking tape.
Because of the diameter of the cowl, it
may be necessary to use a needle valve
extension for the high speed needle valve.
Make this out of sufficient length 1.5mm wire
and install it into the end of the needle valve.
Secure the wire in place by tightening the set
screw in the side of the needle valve.
!4) Installthemufflerandmufflerextension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
andfuelfiller valve.
!3) Slide the cowl back over the engine
and secure it in place using four wood
screws.See picture below.
1.5mm wire
(needle valve)

EXTRA 300S Instruction Manual
12
ALIGNINGTHEHORIZONTALSTABILIZER
!1) Using a ruler and a pen, locate the
centerline of the horizontal stabilizer, at the
trailing edge, and place a mark. Use a tri-
angleandextend this mark, from back to front,
across the top of the stabilizer. Also extend
this mark down the back of the trailing edge
of the stabilizer.
!2) Slidethestabilizer intoplaceinthe pre-
cut slot in the rear of the fuselage. The stabi-
lizer should be pushed firmly against the front
of the slot.
INSTALLINGTHESPINNER
Install the spinner backplate, propeller
andspinnercone. The spinner cone is heldin
place using two 3mm x 12mm wood screws.
The propeller should not touch any part
ofthe spinnercone. Ifit does,useasharp
modeling knife and carefully trim away the
spinner cone where the propeller comes in
contact with it.
!3) With the stabilizer held firmly in place,
use a pen and draw lines onto the stabilizer
where it and the fuselage sides meet. Do this
on both the right and left sides and top and
bottom of the stabilizer.
Pen
Draw centerline
Wood screw.
3MMx12MM(4pcs)

EXTRA 300S INSTRUCTION MANUAL
13
!4) Remove the stabilizer. Using the lines
youjust drew as a guide,carefully remove the
covering from between them using a model-
ingknife.
When cutting through the covering to re-
move it, cut with only enough pressure
to only cut through the covering itself. Cut-
ting into the balsa structure may weaken it.
!5) Using a modeling knife, carefully re-
move the covering that overlaps the stabilizer
mounting platform sides in the fuselage. Re-
move the covering from both the top and the
bottom of the platform sides.
! 6) Installed the horizontal strut ( support
system). See pictures bellow.
Washer.
Remove covering
Tail gear
alumium plate
washer
3MM x 12MM
Clevis

EXTRA 300S Instruction Manual
14
!8) After the epoxy has fully cured, re-
movethe masking tapeor T-pins used to hold
the stabilizer in place. Carefully inspect the
glue joints. Use more epoxy to fill in any gaps
that may exist that were not filled previously
and clean up the excess using a paper towel
and rubbing alcohol.
!7) When you are sure that everything is
aligned correctly, mix up a generous amount
of Flash 30 Minute Epoxy. Apply a thin layer
to the top and bottom of the stabilizer mount-
ing area and to the stabilizer mounting plat-
form sides in the fuselage. Slide the stabi-
lizer in place and realign. Double check all of
yourmeasurementsoncemorebeforethe ep-
oxy cures. Hold the stabilizer in place with T-
pins or masking tape and remove any excess
epoxy using a paper towel and rubbing alco-
hol.
!1) Using a modeling knife, remove the
covering from over the precut hinge slot cut
intothe lower rearportionofthe fuselage. This
slot accepts the lower rudder hinge.
!2) Slidethevertical stabilizer into the slot
in the top of the fuselage. The rear edge of
the stabilizer should be flush with the rear
edge of the fuselage and the lower rudder
hinge should engage the precut hinge slot in
the lower fuselage. The bottom edge of the
stabilizershouldalsobefirmlypushedagainst
the top of the horizontal stabilizer.
VERTICAL STABILIZER
INSTALLATION
Hinge
Hingeslot

EXTRA 300S INSTRUCTION MANUAL
15
! 3) While holding the vertical stabilizer
firmly in place, use a pen and draw a line on
each side of the vertical stabilizer where it
meets the top of the fuselage.
! 4) Remove the stabilizer. Using a mod-
eling knife, remove the covering from below
the lines you drew. Also remove the covering
from the bottom edge of the stabilizer and the
bottomandtop edges of the filler block. Leave
the covering in place on the sides of the filler
block.
When cutting through the covering to re-
move it, cut with only enough pressure
to only cut through the covering itself. Cut-
ting into the balsa structure may weaken it.
!5) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
theverticalstabilizer is aligned 90º tothe hori-
zontal stabilizer.
!6) When you are sure that everything is
aligned correctly, mix up a generous amount
ofFlash 30Minute Epoxy. Applya thin layer to
themountingslotinthe top of the fuselage and
to the sides and bottom of the vertical stabi-
lizer mounting area. Apply epoxy to the bot-
tom and top edges of the filler block and to
thelowerhinge also. Setthestabilizerin place
andrealign. Doublecheckallof yourmeasure-
mentsonce morebeforethe epoxycures.Hold
the stabilizer in place with T-pins or masking
tape and remove any excess epoxy using a
papertowel and rubbingalcohol. Allowtheep-
oxy to fully cure before proceeding.
90º Vertical
Stabilizer
Horizontal
Stabilizer
tailstrut
CONTROL HORN INSTALLTION
!1) Locate the two nylon control horns, two
nylon control horn backplates and four
machine screws.
!2) Position the elevator horn on the right
sideof elevator. The clevis attach-mentholes
should be positioned over the hinge line.
pen
Remove covering
Hinge
2MM x 20MM

EXTRA 300S Instruction Manual
16
!3) Using a 1.5mm drill bit and the control
horns as a guide, drill the mounting holes
through the elevator halves.
ControlHorn
MountingScrews MountingPlate
!4) Mount the control horns by inserting the
screws through the control horn bases and
eleva- tor halves, then into the mounting
backplates. Do Not overtighten the screws or
the backplates may crush the wood.
!5) Position the rudder control horn on the
leftside oftheairplane. Mountthecontrolhorn
parallel with the horizontal stabilizer, not in-
line with the rudder hinge line.
!6) Install the rudder control horn using the
same method as with the elevator control
horns.
ELEVATOR-RUDDER PUSHROD INSTALLATION.
Elevator
Rudder
INSTALLING THE FUSELAGE SERVOS
PARTSREQUIRED
{3} Standard sizeservos
{1} Receiverswitch harness
INSTALLINGTHESWITCH
!!
!!
!1) Install the switch into the precut hole
in the servo tray, in the fuselage, from the bot-
tom. Use the two screws provided with the
switch to secure it in place. Drill two 3/32”
holes through the tray for the screws to pass
through.
Elevator pushrod
Rudderpushrod

EXTRA 300S INSTRUCTION MANUAL
17
! 9) Installservos arm to servos.Notice the
position of the servo arms on the servos. See
pictureas below.
!2) Using a 3/32” drill bit, drill a hole
through the side of the fuselage, opposite the
muffler, even with the switch.
!3) Make a push-pull lever out of scrap
wire. Attach the wire to the switch lever and
route the wire out the side of the fuselage,
through the hole you drilled.
Some switches come with a hole drilled
through the switch tab for this very pur-
pose. If your switch does not, remove the
switchand drill a 3/32” hole through themiddle
of the switch tab.
! 4 ) Install the rubber grommets and brass
collets onto the elevator, rudder and throttle
servos. Test fit the servos into the preinstalled
servo tray. Because the size of servos dif-
fer, you may need to adjust the size of the
precut openings in the tray.
! 5) Position the servos into the servo tray
with the output shafts orientated as shown
below. Drill 1/16” pilot holes through the tray
for each of the mounting screws.
! 6) Install adjustable servo connector in
the servo arm.
! 7) Connect the elevator, rudder and throt-
tle servos to your radio’s receiver and turn on
the system. Set the trim tabs on the transmit-
ter to neutral and center the servo arms. The
elevator, rudder andthrottleservoarms should
be perpendicular to the servos.
! 8)One at a time, hold the pushrods inpo-
sition over the respective servos to check for
proper servo direction. If any servo turns in
the wrong direction, switch your radio’s re-
versingswitchesasnecessaryto achieve the
correct direction.
Adjustable Servo connector
Servoarm
3/32” Hole
Throttle
Elevator
Rudder
C/A glue attached
Rudder
Elevator
Throttle

EXTRA 300S Instruction Manual
18
! !
! !
! 1)Plugthefiveservoleadsandtheswitch
lead into the receiver. Plug the battery pack
lead into the switch also.
!!
!!
!2) Wrap the receiver and battery pack in
the protective foam rubber to protect them
from vibration
INSTALLING THE RECEIVERAND BATTERY
! !
! !
! 3)Position the battery pack in the fuel
tank compartment and the receiver just be-
hind the fuel tank . Use extra foam pieces to
hold them in position.
When balancing the airplane you may
need to move the battery or receiver for-
ward or after to achieve proper balance.
! !
! !
! 4) Usinga 1/16” drillbit, drilla hole through
the side of the fuselage, near the receiver, for
the antenna to exit. Route the antenna out of
the fuselage and secure it to the vertical stabi-
lizer using a rubber band and a modified servo
arm. See picture as below.
Antenna Rubber
Band
Modified
ServoArm
Cut
BELLYPAN INSTALLATION
!!
!!
!1) Bolt the wing to fuselage.
!!
!!
!2) Place the belly pan into its positon un-
der the wing centre section, Trim where nec-
essary, marking sure it aligns with the wing
and fuselage.
!!
!!
!3) Remove the covering where the belly
pancontactsthewing. Do not cut into the wing
when removing the covering. Glue into posi-
tion onto the wing with C/A glue. C/Aglue

EXTRA 300S INSTRUCTION MANUAL
19
!!
!!
!3) When the elevator, rudder and aileron
control surfaces are centered, use a ruler and
check the amount of the control throw in each
surface. The control throws should be
measured at the widest point of each sur-
face!
INITIALFLYING/SPORT FLYING
Ailerons: 3/16” up 3/16” down
Elevator : 3/8” up 3/8” down
Rudder : 3/4 right 3/4 left
Ailerons: 3/8” up 3/8” down
Elevator : 7/8” up 7/8” down
Rudder : 1-1/4” right 1-1/4” left
Do not use the aerobatic settings for
initialtest flyingorsport flying.
!!
!!
!4) By moving the position of the adjust-
able control horn out from the control surface,
you will decrease the amount of throw of that
control surface. Moving the adjustable con-
trol horn toward the control surface will in-
crease the amount of throw.
FLIGHT PREPARATION
Check the operation and direction of
the elevator, rudder, ailerons and throttle.
! !
! !
! A) Plug in your radio system per the
manufacturer's instructions and turn every-
thing on.
!!
!!
!B) Check the elevator first. Pull back on
theelevatorstick. The elevator halves should
move up. If it they do not, flip the servo re-
versing switch on your transmitter to change
the direction.
! !
! !
! C) Check the rudder. Looking from be-
hindthe airplane, movethe rudder stick to the
right. Theruddershouldmovetotheright. Ifit
does not, flip the servo reversing switch on
your transmitter to change the direction.
!!
!!
!1) It is critical that your airplane be bal-
anced correctly. Improper balance will cause
yourplanetolosecontrolandcrash. Thecen-
terof gravityislocated 4cmbackfromthe lead-
ing edge of the wing, measured at the wing
tip.
!!
!!
!2) If the nose of the plane falls, the plane
is nose heavy. To correct this first move the
battery pack further back in the fuselage. If
this is not possible or does not correct it, stick
small amounts of lead weight on the fuselage
sides under the horizontal stabilizer. If the tail
of the plane falls, the plane is tail heavy. To
correctthis,movethebatteryandreceiverfor-
wardorif this is not possible, stickweightonto
the firewall or use a brass heavy hub spinner
hub. When balanced correctly, the airplane
shouldsit level or slightlynosedownwhenyou
lift it up with your fingers.
BALANCING
CONTROLTHROWS
!!
!!
!1) We highly recommend setting up the
EXTRA 300S using the control throws listed
atright. Wehavelistedcontrolthrowsforboth
initial test/sport flying and aerobatic flying.
!!
!!
!2) Turn on theradio system, and withthe
trim tabs on the transmitter in neutral, center
the control surfaces by making adjustments
to the clevises or adjustable servo connec-
tors. Theservoarms should be centered also.
AEROBATICFLYING
4cm
Wing tip

EXTRA 300S Instruction Manual
20
!!
!!
!D) Checkthe throttle. Moving the throttle
stick forward should open the carburetor bar-
rel. Ifit doesnot,flipthe servo reversingswitch
on your transmitter to change the direction.
!!
!!
!E) From behind the airplane, look at the
ailerononthe right wing half. Move the aileron
stickto theright. Therightaileron shouldmove
upandtheotheraileronshouldmove down. If
it does not, flip the servo reversing switch on
your transmitter to change the direction.
PREFLIGHT CHECK
1) Completely charge your transmitter
and receiver batteries before your first day of
flying.
2) Check every bolt and every glue joint
in the EXTRA 300S to ensure that everything
is tight and well bonded.
3) Double check the balance of the air-
plane. Do this with the fuel tank empty.
4) Check the control surfaces. Allshould
move in the correct direction and not bind in
any way.
5) If your radio transmitter is equipped
withdualrateswitches double check that they
are on the low rate setting for your first few
flights.
6) Check to ensure the control surfaces
are moving the proper amount for both low
and high rate settings.
7) Check the receiver antenna. It should
be fully extended and not coiled up inside the
fuselage.
We wish you many safe and enjoyable
flights with your EXTRA300S.
8) Properly balance thepropeller. An out
of balance propeller will cause excessive vi-
bration which could lead to engine and/or air-
frame failure.