3W 112i B4 Manual

3W 112i B4 Manual

The 3W 112i B4 is a powerful and reliable 114cc gasoline engine designed for model aircraft. It features a high level of precision, high torque in the low rpm range, excellent running characteristics, and a long life. This engine is ideal for large-scale model aircraft, providing plenty of power for demanding flight scenarios. The 3W 112i B4 is backed by a 36-month conditional warranty, providing you with peace of mind.

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3W 112i B4 Manual | Powerful, Reliable Model Aircraft Engine | Manualzz
ENGINE MANUAL
112i B4 / QS
www.3w-modellmotoren.com
112i B4 / QS Engine Manual
Dear customer,
Thank you for placing your confidence in 3W. Our long experience (since 1985) in designing and
producing model airplane engines, ranging from single up to six cylinder, has been utilized to
provide you with the best engine possible. Our in-house engineer has been designing two and
four stroke engines for gasoline and diesel for 38 years. We are continually looking at new
technologies and working on new designs. Please be assured that we at 3W always strive to
provide you with engines that are state of the art.
You can count on your 3W engine to have:
• a high level of precision
• high torque in the low rpm range
• excellent running characteristics
• a long life
• lots of power
•And a 36 month conditional warranty.
We wish you plenty of fun and success with your new 3W engine.
Sincerely,
The 3W Team
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112i B4 / QS Engine Manual
Limited Warranty
We grant a 36 month warranty from the date of purchase. This warranty is limited to the replacement
of defective parts that are a direct result of faulty material or manufacturing. No claim concerning
a defect caused by non-compliance with installation or operation instructions, mishandling,
unsuitable spare parts nor unskilled repairs will be acknowledged. Please ask your dealer to fill
out a warranty certificate for you at the time of purchase. Important: Keep this certificate in a safe
place as this warranty will not be honored without it. The original receipt is also required.
The safe operation of the engine is our primary concern. Therefore any alteration, modification
or addition to the engine is not recommended and will void your warranty immediately.
Warning!
This engine is not a toy! Serious injury and /or death can occur from its misuse! READ and
become familiar with this entire instruction manual. LEARN the engine's applications,
limitations, and possible hazards.
When working on the engine(s) it is strictly prohibited to block the piston respectivly
crankshaft from moving by using a tool touching / hitting the piston crown / top.
Reason:
Distortion of the crown / top where the tool touches / hits the piston, material structure will be
changed as well as the outside diameter / conture of the piston.
What could happen:
Hole in the piston and / or piston will size after a running time which cannot be determined.
To block the crankshaft and / or piston from moving a tool has to be used clamping the propeller
hub only.
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112i B4 / QS Engine Manual
Important!
For your safety and for the safety of those around you -- also to learn what is required to maintain your warranty we strongly advise you to read this entire manual carefully BEFORE you start using the engine.
Safe Operation and 3W's Conditional Warranty
For safe operation and to maintain your warranty you must:
• Have a properly designed engine box on your model
• Mount the engine correctly
• Provide adequate air flow and cooling for the engine
• Provide adequate air flow and cooling for the exhaust
• Use an approved propeller and spinner
• Drill the propeller correctly
• Balance the propeller correctly
• Tighten the propeller bolts correctly and check them regularly
• Properly mount your ignition to avoid overheating
• Use the correct battery and regulator (if applicable) for your ignition
• Use the correct switch for your ignition
• Use an appropriate fuel tank, plumbing lines, and installation
• Use the appropriate fuel for break in and after break in (gas and oil)
• Insure adequate filtering of your fuel
• Maintain your engine properly, keeping it clean, etc.
• Use a pre-flight check list before flying your model
• Secure your model properly when starting
• Not use your fingers or hand to start your model
• Adjust your carburetor correctly
• Not adjust your carburetor while the engine is running
• Insure that your spark plug is in good condition and is secured correctly
• Insure that your ignition wires are not frayed and are protected
• Insure that your ignition cap is securely mounted
• Keep all people behind the line of the prop
• Do not put anything (i.e., fingers, body parts, objects, et al) into the rotating propeller
• Keep children away. All spectators should be kept a safe distance away from the running engine.
• Wear proper apparel. Do not wear loose clothing, gloves, neckties, jewelry, or neck straps for your radio
which may get caught in the moving propeller.
• Always wear eye protection when starting the engine.
• Do not operate this engine if you are under the influence of any drugs, alcohol or medication that could affect
your ability to use the engine properly.
Disclaimer
We cannot control how safely our products will be used. And, therefore we do not accept any responsibility for
damage, or injury from their usage.
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112i B4 / QS Engine Manual
Engine Installation
The engine should be mounted on a motor box that will in turn mount to the fuselage. A quadrilateral
shape (gradually increasing in size as it goes away from the motor) provides the best circulation
of air. The reason for using a motor box rather than mounting the engine directly to the fuselage
is that the cylinder(s) need enough room around them to provide proper airflow over and away
from them
The motor box should be stiff enough to prevent engine vibration and it should also have a solid
firewall. The firewall of the motor box should be made from 1/4" aircraft plywood for engines up
to 106cc, or 3/8" aircraft plywood for engines in the 150cc class. For builders experienced with
making composite motor boxes; a comparable strength should be attained.
It is absolutely vital to ensure a tension free mounting of the engine. The surface that the engine
is mounted on must be on an even plane (i.e., a flat and level surface) so that there is no strain
on the engine itself. Again, this is a vital and critical requirement to avoid distorting the crank case,
ruining the engine, and voiding your warranty.
Mount the engine to the motor box with high tensile bolts. Once mounted you now have a subassembly that you can mount to your fuselage. Spacers can be made from hardwood dowels (3/4"
to 1") or machined aluminum bar stock to adjust your down and side thrust. These spacers should
go between the motor box and fuselage and not the motor box and engine.
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112i B4 / QS Engine Manual
It is strictly prohibited:
To mount the engine directly onto spacers for the following reasons:
a. If the spacers are too long and/or not stiff enough the engine could vibrate leading
to the crankshaft starting to twist, further leading to the crank case being destroyed.
b. If spacers are used to adjust the side and/or down thrust and this spacing no longer
provides an even plane (i.e., a flat and level surface) the crank case will be distorted,
leading to the crankshaft starting to twist, further leading to the crank case being
destroyed.
To mount the engine directly onto a large (wide) former or firewall for the following reason:
a. If the cylinder(s) is/are too close to this wide former or firewall, the floating air cannot
pass freely over and then away from the cylinder(s). Cavitating hot air can/will overheat
the engine.
Engine Cooling
A proper cooling system is vital for any engine. An air cooled engine requires an appropriately
sized air intake. Also to keep this air cooling process working the incoming air must be exhausted.
Further, the exhaust air outlet should be four times (4X) the size of the cool air intake.
Example:
• 10 square inches of air intake area would require
• 40 square inches of exhaust air outlet area
It is up to you to insure that the air flows freely to, over, and away from, the hot cylinder(s) and
muffler(s). Please refer to Engine Installation for motor box considerations, and to the following
tips on baffling.
Baffling
Deflecting of the air (baffling) to and over the cylinder(s) is highly recommended for engine cooling.
The idea is to get all of the cool air that is coming through the air intake opening(s) to hit the middle
of the cylinder(s) directly, and then be forced over the cylinder(s), creating turbulent air moving
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112i B4 / QS Engine Manual
through the cylinder(s) fins. The freely flowing, but directed and turbulent air between the fins
provides the maximum cooling for an air cooled engine. Without baffling (meaning wood or
composite dampers that direct the airflow) the air will take the path of least resistance. Some
incoming air will bounce off the cylinder(s) and the rest will escape around the cylinder(s) without
coming into contact with the cylinder(s).
Engine in pusher operation:
Important note! When engines are used operating in pusher configuration cooling gets critical and
special attention has to be given to an effective cooling method. A good cooling system layout
depends on the actual location (position) of the engine in the fuselage.
Operating temperature
The normal operating temperature range for your engine is 176-212 Fahrenheit (80-100 Celsius).
If the temperature of the engine rises above 230 degrees Fahrenheit the engine is in an overheated
condition where sealed ball bearings and needle bearings could be damaged. Further, you risk
an elongation of the heated engine parts, and / or having an oil film build up, which could lead to
a seized piston or pistons. Following the instructions and recommendations in this manual will
keep the engine operating comfortably within the normal temperature range.
Rear induction
Carburetors, whether front or rear, require a steady supply of fresh air. The best way to supply
air to a rear carburetor is by installing an air scoop. Some have thought to drill holes into the
fuselage near the carburetor area rather than creating an air scoop for the carburetor. This does
not work, it fact it will create a vacuum effect that will draw the air away from the carburetor! Again,
you should install an air scoop into the front of the plane which will supply air into the fuselage.
This air will then need to flow out of the fuselage. Drill exit holes into the rear area of the fuselage
for this purpose. Important: The interior of the fuselage must be sealed to prevent damage from
gasoline that sprays from the carburetor. Use a thin epoxy or other appropriate fuel proofing
method. Do not overlook this step as gasoline will melt some materials like Styrofoam very quickly.
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112i B4 / QS Engine Manual
Ignition
Consideration needs to be given to the placement of the electronic ignition module. Avoid placing
the module in the path of hot air. Mount the ignition module using the four supplied rubber grommets
so as to create a 1/16" gap between the ignition module and the mounting surface. Without this
1/16" gap the ignition module can overheat. Important: If the electronic ignition overheats it will
malfunction (e.g., backfiring or shutting down).
Ignition details:
• The red cable is positive (+)
• The ignition timing has been set at our factory
• When fitting a new ignition it is important to achieve the correct coordination of the sensor(s)
to the magnets
Refer to our special ignition description for further information
Canister mufflers
To prevent damage to the header(s) a flexible support bracket is required to mount the canister(s).
The location for this bracket should be at the canister's center of gravity. 3W canisters have a
reinforcement ring at this location.
We suggest creating two compartments in the front section of the fuselage by installing a horizontal
tray. Fuel tanks, batteries, and other equipment can be mounted on top of this tray; the canister(s)
being installed below it. Close off the lower compartment at its rear with an angled former. Locate
this former 1" behind the back of the canister(s). Next cut a hole in the bottom of the fuselage just
under the rear of the canister(s). In this way the air coming from the front of the model can flow
over the canister(s) and then be deflected by the angled former so as to exit through the hole in
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112i B4 / QS Engine Manual
the fuselage. Do not forget to reinforce around this hole.
Important:
This exit area needs to be four times (4x) as large as the intake area.
Propellers
• Only use propeller brands and sizes that are approved for your engine
• The propeller blades must be of the same length
• The propeller must be flat (You can check for flatness by putting the propeller on a level
surface. The maximum difference of the blade heights should be no more than 1/64".)
• The propeller tips must have an identical shape. This is especially important when using
3 or 4 blade propellers.
• You must use a drill press to drill your propeller.
• You must drill the propeller from the rear.
• A drill guide is recommended, but the propeller washer can be used as a drill template. (Fix
the propeller washer onto the propeller in the center-bore using a bolt and nut. Drill one
hole; put one of the propeller bolts into the hole. Continue until the last bolt is used.)
• If you cannot hand tighten all of your prop bolts easily then you have not drilled the propeller
correctly. This can lead to sheared propeller bolts.
• Balancing your propeller is absolutely critical to the health of your engine. You must keep
your propeller balanced. (Propeller balancers are available from DUBRO, and others.)
• Always remember that when the engine is running every person must stay behind the line
of the rotating propeller; never to the side or the front!
Carburetor settings
Before each engine is shipped it has to pass QC and is then test run. We do a basic adjustment
of the carburetor needles at that point.
front carb.: highspeed needle:
rear carb.: highspeed needle:
low speed needle:
low speed needle:
Important: Do not remove the carburetor spring as the spring helps keep the carburetor butterfly
aligned properly. Merely release the ends of the spring so that it no longer holds the butterfly
closed.
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112i B4 / QS Engine Manual
Carburetor Linkage
Included with your engine is a metal bracket to extent your carburetor pushrod horn. Fix this
bracket onto the carburetor horn with a 2.6m machine screw and nut. Then solder the arm in place.
Refer to the attached illustration.
Note: The use of a soft pushrod for the throttle (plastic or nyrod) is not recommended. Use a metal
or carbon fiber pushrod with a plastic ball joint or plastic clevis at each end. This will keep your
RPM much more consistent and accurate around idle where it really counts.
Engine Break In
• Use a 2-stroke petroleum based oil (preferably ashless) as this type of oil has a good
honing effect which helps to break in the engine
• Use a mixture of 32-1 or even 30-1
• Use this fuel mixture for approximately 2-3 hours of run time
• Use a high Octane unleaded fuel (98 Octane is ideal)
We suggest starting the break in process of the engine on a test stand; for approximately one
hour. This time should be used to get familiar with the engine. Do not run the engine at full throttle
for more than ten seconds during this test stand break in. The reason for this is that you are not
getting the normal cooling effect that you would if the engine was in a model that was flying.
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112i B4 / QS Engine Manual
Another method that can be used for break in would be to set the engine between 2000-2500 rpm
and let it run for 4 hours. After that the engine would basically be broken in. Note: For break-in a
smaller propeller is recommended.
Important:
Remember that when the engine running ever
person must stay behind the line of the rotating propeller; never to the side or the front!
After Initial Break In
• Use high grade fully synthetic 2-stroke oil
• Use the oil manufacturer's recommended gas to oil mixture
• We use 3W 2-stroke oil in our engines here in Germany, but there are other high grade
2-stroke oils that will perform well. The list below shows some 2-stroke oils that our customers
from abroad have used with success.
Pennzoil at 50-1
Redline at 40-1
Amsoil DOMINATOR Racing Oil at 50-1
Amsoil Saber 100:1 Pre-Mix Oil at 100-1
Note: The engine needs 12-20 hours running time for the break in process to be 100% complete.
Additional installation notes
• There must be a minimum 4" separation between anything attached to the receiver and
all things related to the ignition (i.e., the ignition itself, and its wires, battery, and switch)
• Use a plastic spiral sheath to protect the ignition cables
• Never remove the sparkplug cap by using a mechanical aid like pliers. Only remove the
cap by hand using a twist/pull movement.
• The spark plug cap must be firmly seated to the sparkplug. If the spark plug cap is not firmly
seated there is a very good possibility that you will experience radio interference.
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112i B4 / QS Engine Manual
• Use only ignition on/off switches recommended by 3W
• 6 volts is required for the ignition.
• Do not skimp on your throttle servo. A high quality throttle servo is recommended for reliable
and accurate operation of the carburetor.
• Never fill the fuel tank via the carburetor fuel line
• Use the same I.D. for tank ventilation and the carburetor fuel line
• Use small plastic cable ties on all fuel line to fitting connections.
• We recommend cutting the fuel line in the fuel tank in half. And, then joining them back
together with a brass tube. The brass tube prevents a folding of the fuel line with could cut
the fuel supply for the engine (see tank photo).
• The use of soldered on DUBRO barbs on the ends of the brass tubing is highly recommended.
Again, always secure the fuel line with small plastic cable ties.
Warning!
Failing to read and follow all of the instructions in this manual can lead to unsafe conditions and
damaged equipment. Here are some examples:
• Unbalanced propellers can damage the engine's ball bearings, needle bearings, even
cause the crankshaft to break
• Incorrectly drilled propellers can lead to sheered propeller bolts further leading to accidents
and crashes
• Loose propeller bolts can also lead to sheered propeller bolts further leading to accidents
and crashes. Check these bolts before starting your engine.
• Flipping the prop with your hand or fingers can lead to serious accidents! Always use a
rubber stick to start the engine!
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112i B4 / QS Engine Manual
• Not having the plane secure can be lead to serious accidents. Depending on its size use
one, two, or more helpers to secure your model. Always tell your helpers to be ready for
the model to start at full power. Remember, these engines have a high power output.
• Do not put your finger(s), any items, or any other parts of the body into the rotating propeller.
• Never tune the carburetor whilst engine is running! Stop the engine. Tune the carburetor
and start the engine again. Repeat this procedure until the carburetor is properly tuned.
• Make sure that no gasoline will be splashed into the hot muffler(s).
• Only 3W mufflers, or mufflers authorized by 3W with an acceptance (test) number, should
be used.
• Only 3W-ignition systems should be used for proper operation.
Important:
Using unauthorized products or failing to follow the instructions in this manual will void your
warranty immediately.
Pilots check list
We strongly recommend checking the following agenda for your own safety before starting!
• Check the propeller bolts for tightness
• Check that the spinner is firmly attached
• Check the propeller for possible damage
• Check to be sure you have the throttle position at idle
• Check all batteries
• Check servo functions
• Check to see that the ignition switch is OFF
• Check pressure (6-8 bar) system of retract (if applicable)
• Check all linkages for play
• Check your wheels for possible damage and easy running
• Check the wing mounting for tight fit and proper attachment
• Check the canopy for tight fit and proper attachment
• When starting the engine one person (minimum) has to hold the model
Starting Procedure
If you have read and understood this entire manual, and followed its recommendations, you are
ready to start your new engine.
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112i B4 / QS Engine Manual
• Use a rubber stick to start the engine. Never use your hand or fingers!
• Insure that your receiver batteries are charged and your receiver is on
• Insure that your ignition battery(s) are charged
• Insure that your transmitter is on, and that your throttle is set to low
• Insure that your plane is properly and safely anchored (use one, two, or more people if
necessary)
• Close the choke(s)
• Switch on the ignition
• Flip the propeller until the engine "pops" (starts and stops quickly)
• Wait for the propeller to stop spinning, turn off the ignition, and open the choke(s)
• Switch the ignition back on
• Flip the propeller again until the engine starts
• Warm-up the engine for at least 20 seconds
• Due to the high power and torque of the engine(s) it is not recommended to open the throttle
abruptly
Precision tuning of the carburetor
The use of a tachometer is highly recommended. And, again, never adjust the needles while the
engine is running!
1. Using the tachometer tune the engine for maximum power with the high needle (H).
2. Again using the tachometer; richen the high needle (H) until the motor runs 100-200 RPM
less than the maximum RPM. Now you are tuned slightly rich on the high needle (H).
3. Let the engine run at idle for one minute. Check to see that the idle RPM remains constant.
4. If the idle RPM drops until the engine stops; the low needle (L) is too rich. Lean the low
needle (L) until a constant idle RPM is achieved.
5. Check the transition with a quick throttle advance. The engine should not sound strained
at any time. It should sound like it is making quick steady power; without any hesitation.
6. An optimally tuned engine will feel a bit rich after a cold start. It will start to run right after
it has warmed up for approximately one minute.
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112i B4 / QS Engine Manual
Trouble Shooting
Problem
The engine is flooded (the crankshaft housing is filled with fuel).
Solution
Remove the spark plug; turn the engine to a position where the fuel runs out.
The engine starts after being choked but then stops soon after.
The low needle on the carburetor is probably too lean. Go back to the recommended settings
and adjust your carburetor from there. This problem may also indicate a dirty carburetor or
faulty ignition.
The engine runs rough and is vibrating strongly.
Balance the propeller. Check the ignition timing. Check your plumbing for air/fuel leaks.
Check your spark plug for carbon and check the spark plug gap. Check the motor mount to
be sure it is rigid. Check to make sure the engine is mounted on a level surface so that the
crankcase is free of tension. Check the engine and propeller bolts.
The engine doesn't reach a normal RPM at full throttle.
Check the carburetor settings. Check to see if the propeller is too large. Verify that you have
the correct muffler system. Check to see if the engine is overheating. Check the ignition
timing. Check the spark plug for defect. Verify you have the correct gasoline, oil, and have
mixed them with the correct ratio.
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112i B4 / QS Engine Manual
Metrics
Techn. Spezifikation / Techn. specifications / Caracteristiques techniques
Cylinder capacity /
114 ccm / 6.96 cu.in
Power / Puissance
11 HP / CV; 8.2 kW
Bore dia. / Alesage
36 mm / 1.42 in
Stroke / Course
26 mm / 1.02 in
Speed range / Vitesse de rotation
min-1 / rpm
Weight / Poids
Ibs - incl. ignition
Crankshaft
3 Ball bearings / 3 Roulement à billes
Connection rod / Bielle
Needle bearings on both ends / Roulement
à aiguille aux deux cotés
Gasoline-Version
1 : 50 - 1 : 80 Mix, full syntethic oil, high
Octane unleaded fuel (98 Octane is
recommended)
IIS - Ignition / V.cc allumage
6,0 V
Propeller / Hélice
2-bladed / à 2 pales
3-bladed / à 3 pales
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112i B4 / QS Engine Manual
mounting bolt pattern
ATTENTION:
this drawing is in 1:1 size. disable any Acrobat print setting to fit it into paper size.
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IIS - IGNITION SYSTEM
intelligent Ignition System with microprozessor controlled auto timing
General
For optimum operation of combustion engines an ignition system with auto timing is necessary. For easy starting
up a spark is ideal in the upper dead point position of the pistion. With increasing rpm a pre-ignition timing up to 30
degree is needed.
This is achieved with our new system using a high precision rpm-check by two magnets built-in the hub of the engine.
The hallsensor transmits the signal to the microprocessor, programmed with our engine characteristic.
Technical specifications
Temperature range :
Voltage range:
o
o
- 40 C / + 65 C
4,8 V - 7,5 V
Operation voltage
Open - circuit current
Current - consumption
Ignition Voltage
Rpm. max
Magnet red (north pole)
Magnet green (south pole)
ambient temperature
five cells NICAD
one - cylinder
two - cylinder
6,0 V
18 mA
20 mA
0 rpm
100 mA
1000 rpm
950 mA
6000 rpm
1100 mA
10.000 rpm
> 20 kV
12.000 rpm
upper dead point
o
55 before upper dead point
6,0 V
18 mA
20 mA
0 rpm
120 mA
1000 rpm
1100 mA
6000 rpm
1300 mA
10.000 rpm
> 20 kV
12.000 rpm
upper dead point
o
55 before upper dead point
Like all other electronic devices the ignition box gets warm under operating conditions. For that reason a simple
airflow has to be guaranteed. Therefore the 4 delivered rubbermounts have to be used for installation, insuring a
one millimeter gap underneath the box.
Cable information
blue wire
red / black with bigger dia, with socket
red / black with plug
yellow / white with socket
to sensor
to battery
connection for red LED, long contact +
connection for 3W tachometer and other options
Info about red LED
a)
b)
c)
Ignition battery switched on:
LED on
Propeller one turn (flip):
LED off - ignition ready for operation
Propeller not being turned (flipped), after
LED on, ignition prepared but not ready for operation
twenty seconds:
This safty function has two reasons:
- the engine cannot be started by coinsidence if sombody forgot to switch off the ignition
- battery will be protected against incidental discharge
d) in case the LED will not get off when propeller is turned (fliped): hall sensor is not connected or other defect
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112i B4 / QS Engine Manual
Garantie-Bedingungen
Conditions de garantie
Condiciones de la Garantía
Wir geben auf unsere Geräte 36 Monate
Vollgarantie ab Verkaufsdatum.
Die Garantie ist ausschliesslich
beschränkt auf den kostenlosen Ersatz
defekter Teile, deren Mängelursache
Konstruktions oder Materialfehler sind.
Wir möchten ausdrücklich darauf
hinweisen, dass die Garantie nur dann
erfüllt wird, wenn der Garantieanspruch
gleichzeitig mit dem
Reparaturauftrag geltend gemacht wird.
Beachten Sie auch bitte, dass wir einen
Garantieanspruch nicht akzeptieren
können, wenn die Störung durch
unsachgemässe Behandlung (siehe
Gebrauchsanweisung), durch natürliche
Abnutzung, durch Verwendung fremder
Ersatzteile oder Reparaturen durch
andere entstehen. Lassen Sie auf
dieser Garantiekarte das Kaufdatum
durch den Händler eintragen, oder
heften Sie die Kaufquittung dazu.
Bewahren Sie diese Garantiekarte
sorgfältig auf, denn ein Garantieanspruch
ist leider hinfällig, wenn sie
bei einer Reklamation nicht vorgelegt
worden kann.
Nous donnons une garantie de 36 mois
à compter de la date de vente. Cette
garantie est limitée exclusivement au
remplacement gratuit des pièces
défectueuses dont la cause est à
imputer à un défaut de matériel ou de
fabrication. Nous tenons à préciser que
la garantie n'est valable que si le
document de garantie est remis avec la
demande de réparation. Nous ne
pouvons pas accepter une réparation
en garantie lorsque la défectuosité est
à imputer au nonrespect des
prescriptions d'emploi, à une usure
normale, à l'emploi de pièces de
rechange non appropriées ou à des
réparations effectuées per tierces
personnes. Faites remplir cette carte de
garantie par le négociant ou attachez
votre quittance à ce document.
Conservez avec soin ce certificat car
votre droit de garantie en cas de
réclamation n'est valade que sur
présentation de ce document.
Ofrecemos una garantia de 36 ano
desde la fecha de compra, que será
aplicable única y exclusivamente a la
reposición gratuita de piezas
correspondientes a fabricación o
materiales defectuosos. Recuérdese
que la garantía sólo será efectiva si se
adjunta al aparato a reparar.
No se admitirá ninguna reclamación
por No se admitirá ninguna
reclamación por correctamente las
instrucciones de funcionamiento, o
bien debidos a un mal manejo, al uso
de piezas de recambio inapropiadas
o reparaciones efectuadas por
inexpertos.
Por favor, pida a su vendedor que
cumplimente esta garantía en el
momento de la compra. Conserve
cuidadosamente este certificado ya que
cualquier reclamación sólo será válida
mediante la presentación de este
documento.
Cette garantie est valable seulement
si accompagnée d'une preuve
d'achat (Facture du revendeur).
Esta garantla vale solo si presentada
junta a la prueba de cuempra (recibo
de pago).
Diese Garantie ist nur gültig, wenn
sie zusammen mit einem Kaufsbeleg
vorgewiesen wird (Ladenquittung).
Guarantee conditions
Condizioni di garanzia
Condiçoes de garantia
We grant a 36 month guarantee as
from purchase date. This guarantee
applies solely to the free replacement
of defective parts resulting from faulty
material or manufacturing. We point out
that guarantee is effective only if joined
to the apparatus to be repaired. Na
claim conceming a defect caused by
noncompliance with operation
instructions, mishandling, unsuitable
spare parts and unskilled repars will be
acknowledged. Plese ask your dealer
to fill in this guarantee at time of
purchase. Keep this certificate carefully
because your claim is valid only upon
presentation of this document.
Riconosciamo una garanzia di 36 mesi
dalla date di acquisto. Questa garanzia
si limita esclusivamente alla sostituzione gratuita dei pezzi difettosi la cui
causa è da imputare a difetti di materiale o di fabbricazione. Desideriamo
precisare che la garanzia è valida
solamente
se la stessa accompagna l'apparecchio
per la riparazione. Non possiamo
accettare una riparazione in garanzia
quando il difetto è imputabile alla
non osservanza delle istruzioni d'uso,
manomissioni, all'impiego di pezzi di
ricambio non adatti o a delle riparazioni
eseguite da terzi. Fate compilare
questo certificato di garanzia dal vostro
negoziante al momento dell'acquisto
dell'apparecchio. Conservate con cura
questo certificato perché il vostre diritto
di garanzia è, valido solo contro
presentazione di questo documento.
Reconhecemos uma garantia de
36 meses da data de compra. Esta
garantia é limitada exclusivamente à
substituição grátis de peças com
defeitos de material ou de fabricação.
Desajamos recordar que a garantia só
tem valor se acompanha o aparelho a
reparar.
Nao podemos aceitar uma reparação
em garantia se o defeito resulta da falta
de atenção às instruçoes de uso,
manejo, errado, emprego de peças de
troca nao apropriadas ou a reparações
feitas por terceiros.
Queira pedir ao seu vendedor de
compilar este certificado de garantia ao
momento da compra do aparelho.
Guarde este documento com cuidado
pois a garantia só vem oferecida contra
a apresentação da certificado de
compra, além do recibo da loja.
This guarantee is valid only when
accompanied with the official shop
receipt.
Questa garanzia è valida solo se
presentata
assieme alla prova d'acquisto.
(Ricevuta del negoziante).
Esta garantla só vale se for
apresentada junta à prova de
compra (recibo da loja).
more infos: www.3w-modellmotoren.com

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Key Features

  • 114cc Gasoline Engine
  • High Torque
  • Long Life
  • 36-Month Warranty
  • Precision Design
  • Powerful
  • Reliable
  • Excellent Running Characteristics
  • Large-Scale Model Aircraft

Frequently Answers and Questions

How do I mount the 3W 112i B4 engine?
The engine should be mounted on a motor box that provides adequate airflow. A quadrilateral shape (gradually increasing in size as it goes away from the motor) is recommended for optimal air circulation. You should also ensure a tension-free mounting on an even plane to avoid distorting the crankcase.
What is the recommended fuel mixture for break-in?
Use a 2-stroke petroleum based oil (preferably ashless) with a mixture of 32-1 or 30-1. Use this fuel mixture for approximately 2-3 hours of run time.
What is the normal operating temperature range for the engine?
The normal operating temperature range for your engine is 176-212 Fahrenheit (80-100 Celsius). If the temperature of the engine rises above 230 degrees Fahrenheit the engine is in an overheated condition.

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