Evolution® Gas Engines

Evolution® Gas Engines
10cc
GAS/PETROL
Evolution Gas Engines
®
EN
NOTICE
All instructions, warranties and other collateral documents are subject to change at the sole
discretion of Horizon Hobby, Inc. For up-to-date product literature, visit horizonhobby.com
and click on the support tab for this product.
Meaning of Special Language
The following terms are used throughout the product literature to indicate various levels
of potential harm when operating this product:
NOTICE: Procedures, which if not properly followed, create a possibility of physical property
damage AND a little or no possibility of injury.
CAUTION: Procedures, which if not properly followed, create the probability of physical
property damage AND a possibility of serious injury.
WARNING: Procedures, which if not properly followed, create the probability of property
damage, collateral damage, serious injury or death OR create a high probability of
superficial injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features
of the product before operating. Failure to operate the product correctly can result
in damage to the product, personal property and cause serious injury.
This is a sophisticated hobby product and NOT a toy. It must be operated with caution and
common sense and requires some basic mechanical ability. Failure to operate this Product
in a safe and responsible manner could result in injury or damage to the product or other
property. This product is not intended for use by children without direct adult supervision.
Do not attempt disassembly, use with incompatible components or augment product in any
way without the approval of Horizon Hobby, Inc. This manual contains instructions for safety,
operation and maintenance. It is essential to read and follow all the instructions and warnings in the manual, prior to assembly, setup or use, in order to operate correctly and avoid
damage or serious injury.
CAUTION: This product can become extremely hot when in use, which could lead
to burns.
Age Recommendation: Not for children under 14 years. This is not a toy.
Safety Warnings
Model engines produce a substantial amount of power, which can create unsafe situations if not
used correctly. Always use common sense and observe all safety precautions when operating,
handling or performing any procedure involving your engine. Failure to follow safety precautions
could result in serious injury and property damage.
• Always ensure spectators, especially children, are at least 30 feet away when running
the engine.
• Always ensure that the propeller is securely attached to the engine shaft and all retaining
fasteners are tightened properly before EACH flight. Use of blue threadlock to tighten nuts
is advisable.
• Always keep small parts out of the reach of children as they can be choking hazards.
• Always secure the airplane before powering the engine.
• Always keep your face and body away from the path of the propeller blades when starting
or running your engine.
• Always stand behind the propeller when making carburetor adjustments.
• Always wear safety glasses or goggles when starting and running your engine.
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• Always keep your fuel in a safe place away from sparks, heat or anything that can ignite.
• Always ensure the aircraft is secure and will not move once the engine is started.
• Always rebind your transmitter to your receiver(s) after setup and before first flight.
• Always ensure the throttle failsafe is set to low throttle in your transmitter.
• Always perform a range check prior to flight.
• Always cut off the fuel supply (pinch or disconnect the fuel line to the carburetor) or use
the throttle linkage to shut off the air in order to stop the engine.
• Never use hands, fingers, or any other body part to stop the propeller.
• Never throw any object into a propeller to stop it.
• Never run the engine in the vicinity of loose small objects, such as gravel or sand, to avoid
the propeller uncontrollably throwing such materials.
• Never wear loose clothing or a loose neckstrap when operating your model engine as these
items could become entangled in the propeller.
• Never have loose objects such as screwdrivers, pencils, etc. in your pockets when operating
your model engine. These could fall into the propeller.
• Never allow fuel to come into contact with eyes or mouth. Gasoline and other fuels used
in model engines are poisonous.
• Always ensure gasoline and fuel are stored in a clearly marked container away from
the reach of children.
Precautionary Guidelines
• Always mount the engine securely on a bench mount or high-quality engine mount.
• Always use the correct size and pitch of propeller for your engine. Refer to the Propeller Chart
in this manual.
• Always confirm proper balance of your propeller prior to installation of the engine. Failure
to do so could result in damage to the engine and/or airframe.
• Always utilize an electric starter to start your engine.
• Always discard any propeller that is nicked, scratched, cracked or damaged in any way.
• Always run your model engine in a well-ventilated area. Model engines can produce possibly
harmful carbon monoxide fumes.
• Always store your fuel safely in a sealed, water-resistant container.
• Always store fuel in a cool, dry location. Do not allow fuel containers to come in direct
contact with concrete, as the fuel may absorb moisture.
• Always responsibly discard fuel if there is condensation and/or water inside the fuel
container.
• Never return unused fuel from the fuel tank back into the fuel container.
• Never attempt to repair or modify a propeller beyond its intended use.
• Never handle model engines, mufflers and/or tuned pipes until they have had time to cool.
They can become extremely hot when in use.
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Introduction
Congratulations on your forethought and decision to purchase the Evolution® brand’s first small
block gas engine in our new series. All of the Evolution brand gas engines are designed from the
start to provide you with excellent performance at a fraction of your previous operating costs. We
have painstakingly designed and tested each engine to insure a hassle free experience without
giving away anything in expected performance or durability. This manual, when read and followed will guide you through the simple steps to your success. Welcome to the Evolution family.
Small Block Gas Engine Design
Starting with our already proven 60NX glow engine, enjoyed by thousands around the world, we
endeavored to take that excitement and experience into the realm of gasoline fuel to provide
you with a complete package; great performance and low cost of operation.
Step 1 S
tart with a great engine. The 60NX was first announced and sold in July 2009 and has
since provided thousands of users excellent performance.
Step 2 D
esign a new carburetor system that will be reliable and provide for hassle free use by the
owners. This new carburetor, with already proven technology, was modified to fit in the
available space in front of the cylinder and the unique needs of a gasoline fueled engine.
Built on to the front of the carburetor, is a crankcase-pressure driven regultar system.
This system takes fuel a muffler pressurized tank and meters it properly in all attitudes of
flight. A new cat’s eye style fuel metering system was added to allow for more contrallability to the low and mid-range throttle positions.
Step 3 Design the proper muffler system to handle the extra heat and expansion of the burnt gas
mixture when compared to a glow system. These changes included adding volume to the
muffler, including a much larger muffler through-bolt to handle the heat and stress, and
enlarging the outlet of the muffler to minimize backpressure while still providing noise
reduction.
Step 4 D
esign operating accessories that enhance the user experience. During our extensive
2-1/2 year testing program we discovered a lot of new techniques and obstacles that are
unique to gasoline fueled small block engines.
• Because the amount of fuel consumed is one third that of a comparable sized
glow engine the construction and reliability of the fuel delivery system to the
carburetor becomes three times as critical. Microscopic pieces of dirt that used
to safely pass through the larger fuel passages of a glow carburetor will wreak
havoc on a gasoline system. By using a quality inline filter like our Inline Filter
(EVOA105) we can take care of the dirt problem. One of these is included with
your engine.
• The same holds true for air bubbles from the tank or any small leak in the fuel
tubing; what would pass harmlessly through a glow carburetor simply is not tolerated in a gasoline system because the air bubbles are effectively three times
the size they used to be. We have developed and sourced an excellent felt filter
clunk that when used in the tank stops all the air bubbles from moving into the
fuel delivery tubes. This felt clunk is critical to successful and reliable operation.
One of these is included with your engine.
• We found that high muffler temperatures would destroy normal Tygon® tubing
(the go-to choice for gasoline engines) within minutes. We found that Neoprene
tubing would withstand the temperatures but it tended to degrade quickly
in use so we sourced the proper sized Viton® tubing (Gasoline Fuel Tubing
EVOA104) which withstands not only the high temperatures but its durability
is much greater than that of either Tygon or Neoprene. The added bonus is that
it fits and holds well to the fuel fittings without any need for additional wire or
tie-wrap keepers. We have included a supply of this tubing with your engine.
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Included Content
ENGINE
• Muffler (EVO10601)
• Muffler Screws & Gasket (EVO100E46A)
• Spark Plug (EVOG10350)
• Evolution/Spektrum™ Telemetry RPM
adapter cable (EVOA107)
• Med Gas Fuel Tubing (EVOA104)
• In-Line Fuel Filter (EVOA105)
• In-tank Felt Filter/Clunk (EVOA106)
OPTIONAL ITEMS
• Tachometer (HAN156)
• Propeller 10 x 6 (EVO10060) for break-in;
12 x 6 (EVO12060) for normal flight
• EVOM1 High Performance Tuned Muffler:
EVO46-60
Spark Plug
Muffler Nipple
Muffler
Fuel Nipple
High-Speed
Needle
Muffler
Spark Plug
Needle Limit Collar
Low-Speed Needle
Throttle Arm
Installing the Engine
1. Secure the engine mount on the airplane
firewall. Tighten the engine mount screws
in the firewall.
2.Install the engine on the engine mount
according to the airplane manufacturer’s
instructions.
WARNING: Tighten all engine
mounting screws before each flight. If
you do not tighten the engine
mounting screws, the screws may
vibrate loose and cause the engine to
separate from the fuselage.
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Installing the Muffler
1. Put a lock washer on each of the muffler
screws. Push the muffler screws through
the cylinder head.
2.Place the muffler gasket over the engine
mounting screws.
3. Align the muffler gasket with the exhaust
opening and the muffler mounting screws.
4.Tighten the muffler screws.
T he muffler mounting accessory package includes mounting screws (2), lock washers (2),
muffler gaskets (2) and L- wrenches (2).
Important: Tighten the muffler screws after
five tanks of fuel. The muffler screws may
loosen from heat and vibration.
It is important that you tighten the muffler
through-bolt after each of the first three,
full tank engine runs. The heat will cause expansion of the through-bolt and muffler body
parts. After the third tightening, no further
muffler loosening should occur.
To tighten the muffler through-bolt:
1. Loosen the muffler lock nut.
2.Tighten the muffler through-bolt screw.
3. Tighten the muffler lock nut.
Connecting the Throttle Linkage
11mm
1. Use a secure method to attach the
throttle linkage to the throttle arm on the
carburetor.
2.Power on the transmitter and receiver.
3. Move the throttle stick to the middle stick
position.
4.Adjust the throttle arm so the arm is 90
degrees to the throttle pushrod.
5. Center the throttle servo. Install a servo arm
with a hole 11mm (7/16 in) from the center
of the arm.
6. Use a clevis to attach the throttle linkage to
the servo arm.
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1.5mm
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Adjusting the Throttle Opening
1. Lower the throttle and center the throttle
trim.
4.Move the throttle stick and throttle trim
down to confirm the throttle closes.
2.Adjust the length of the throttle linkage
until the throttle is open 1mm.
5. If you reversed the throttle channel in your
transmitter and you are using a 2.4GHz
radio system, you must re-bind your radio
system to set the correct failsafe position.
3. Move the throttle stick up to confirm the
throttle opens. If the throttle does not
open, reverse the throttle channel in your
transmitter.
Attaching the Fuel Lines
Vent Line
Fuel Line
Vent Line
1. Connect medium diameter Viton® fuel line
to the carburetor and the fuel tank supply
line.
2.Connect medium diameter Viton fuel line
to the muffler pressure nipple and the fuel
tank vent line.
Fuel Line
RECOMMENDED PROPELLERS
10 x 6–13 x 8 (12x6 has tested to be the best
performer with this engine although the
performance is very good throughout the
recommended range)
Attaching the Propeller and Spinner
1. Remove the prop nut and prop washer from
the crankshaft.
2.Install the spinner backplate, followed by
the propeller, prop washer and prop nut.
4.Install the spinner cone. Make sure the
spinner cone is not touching the propeller.
Trim the propeller opening if necessary.
3. Cover the propeller with a cloth and use an
adjustable wrench to tighten the prop nut.
5. Tighten the spinner screw(s) to secure the
spinner cone.
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Connecting the Electronic Ignition
The Evolution Electronic Ignition Assembly is designed and engineered specifically for the
small block engine series. It is smaller and lighter so it fits into tighter spaces of the airplanes
the engines are designed to power. The battery voltage required is between 4.8v (4-cell Ni-MH
pack) and 8.4V (2S Li-Po battery) and no voltage regulators are needed with any of these
batteries. We recommend a 2S Li-Fe battery (such as the Team Orion® Avionics Li-Fe Receiver
Pack 1300mAh 6.6V (ORI60503)) and we have done extensive testing with these packs. The
maximum amp draw at full throttle is 450mAh, and our more typical average has been between
250–300mAh.
The assembly consists of:
• Ignition module with battery connector, ignition sensor connector, tachometer readout
connector and spark plug connector.
• Ignition sensor (already attached to your engine)
• Sensor magnet (already installed in the prop drive hub of your engine)
Mounting Your Electronic Ignition
• You can mount the unit in any orientation
and place that is convenient for your
installation. The module is sized to conveniently fit into the tank compartment of
most 46–50 sized airplanes alongside or
underneath the recommended 6–8 oz fuel
tanks. You can also mount it to the firewall
or under the engine firewall extension if
your airplane is so equipped. Keep in mind
that it should be mounted away from the
heat of the muffler.
• Secure the ignition module to your chosen
location with foam padding to provide
vibration isolation. We typically mount it
conveniently with tie wraps after wrapping
the ignition in lightweight 1/4-inch foam
rubber.
• You may need to route both the spark plug
connector wire and the ignition sensor
wire through the firewall so be sure to plan
ahead and provide adequate sized holes
that will allow you to pull either the ignition
sensor connector or the spark plug cap
connector through the holes for later
ignition removal.
• Mount a good quality radio receiver type
switch between the ignition unit and the
battery. Mount this switch in a convenient
place on the outer fuselage close to the
front of the airplane to make it easy to turn
the ignition on and off. Being able to easily
shut off the ignition is an important safety
consideration.
• Connect the ignition sensor wire to the
ignition module. The sensor wire will only
fit into one of the connectors so you cannot
connect it wrong.
• Connect the ON/OFF switch to the battery
connector lead of the ignition module. This
connector is the red connector.
• If desired you can connect either the
separately available tachometer readout or
the included Evolution/Spektrum Telemetry
Adapter Cable (EVOA107) to the tachometer
readout connector. Plug the other end of
the adapter cable into your telemetry module’s rpm input port.
• Connect the spark plug connector to the
spark plug. This adapter has a push on and
rotate clockwise 1/8 turn locking
mechanism to insure a solid connection.
Make sure you charge your ignition battery
and are now ready to operate your electronic
ignition with the engine.
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Fuel
This engine requires a mix of 20:1 gas to oil
lubricant ratio to operate and last a long
time. The bronze bearing at the bottom end
of the conrod depends upon this lube ratio to
operate properly. Do not go higher than a 20:1
gas/oil ratio or the warranty on your engine
will be voided.
To properly mix the fuel add 6.75 oz of good
quality 2-stroke oil to one gallon (or 53 mL
of oil to one liter) of 87–93 octane fuel.
(EVOX1001Q Evolution 2-stroke oil is
recommended) We prefer to add the oil first
to our fuel container and to add the gasoline
second. This helps to insure a good mixture of
the oil with the fuel at the outset.
We have tested our own Evolution 2-stroke oil,
Valvoline, Shell, RedLine and Husqvarna oils.
Other quality 2-stroke oils should work as
well. Do not use Amsoil synthetic oil in
any form.
Fuel Delivery System
It is very important to properly construct
your fuel supply system to the engine to
avoid operating problems with our engine.
Our experience has shown that many seemingly engine related operating problems are in
fact fuel delivery problems, not engine related
problems.
The clunk will not move around well if the tank
is smaller than 6 oz (170mL). Any tank larger
than 8 oz (240mL) will result in carrying extra
weight to no benefit (unless you like to fly for
a long time).
Fuel Filtering - Because of the incredibly small
amount of fuel that is being used by this
engine, filtration of the fuel is mandatory in
three different spots in the system:
• We suggest a three-line tank system; one
for the line to the carburetor with the clunk
attached internally, one for the muffler
pressure to the tank, and one dedicated
to fueling/defueling the tank. We try to
avoid the T-fittings and other inline valves
because they can be a possible source of
air/fuel leaks.
1. Between the fuel jug and the tank
2.Within the fuel tank itself (with a filtered
clunk EVOA106)
3. Between the fuel tank and carburetor (with
an in-line fuel filter EVOA105.
Both of these filters (2 and 3) are included in
the engine package.
Tank Location - Because muffler pressure
is used to provide the pressurization to the
fuel regulating and metering carburetor, the
tank still needs to be mounted in line with
the carburetor, and as close to the rear of the
engine as possible. Care taken in mounting
the tank as described will provide trouble free
operations in all flight attitudes.
Tank Choice and Construction – Choose a
tank between 6–8 oz (170–240 mL). These
tanks will yield 17 minutes (for the smaller
tank) to 24 minutes (for the larger tank) of full
throttle flying time.
• Ensure you use a tank stopper made for
use with gasoline and/or smoke oil.
• Ensure you use the provided Viton tubing in
all the plumbing of the tank, externally and
internally.
• Ensure you use the included felt filter clunk
inside the fuel tank.
• Ensure you use the included inline filter
between the tank and the carburetor.
• Ensure there is a good seal system for
the dedicated fueling/defueling line. We
highly recommend the HAN116 Fuel Filler
Assembly for its sleek look and ease of use
when installed on your airplane.
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Engine Break-in
Your new engine needs to be broken-in to ensure a long life of all the components. The piston
and liner construction piston and liner construction is true ABC (Aluminum piston, Brass
Chromed liner), which requires a specific break-in procedure that cannot be fully accomplished
with bench runs.
Because the ABC piston and liner rely on the close fit of the piston to the liner to provide the
compression seal, the engines are built with a taper to the liner that requires the piston to
match the taper during the break-in process. For this to be accomplished, this process requires
repeated heating and cooling cycles, and must be done at a needle setting that is only slightly
rich of peak.
Breaking in an ABC piston and liner by running it rich does not provide the necessary parts
growth to accomplish the needed piston and liner fitting. Using a rich needle setting does not
allow for proper expansion of the liner, resulting in the connecting rod receiving the full force
of the piston when it moves past Top Dead Center (TDC). Allowing the engine to heat up will
expand the liner and reduce the load on the connecting rod, ensuring a proper engine break-in.
Doing the break-in with a light load on the engine (e.g. a smaller than normal propeller) makes
this task much easier. Please follow the steps below to ensure a successful experience.
1. Do the break-in process mounted on your
airplane and in the air.
2.Use a 10 x 6 prop for your break-in process.
This provides a light load, and high rpm
that when matched with the heat of the
engine will break-in the engine properly.
3. Use the proper recommended fuel with a
20:1 gas to oil ratio.
4.The proper break-in flight procedure is to
fly the airplane at full throttle through a
series of figure eight maneuvers (i.e. Cuban
Eight). These maneuvers in particular benefit the engine because when climbing the
additional load on the engine will increase
the temperature and when diving the airplane the lighter load and higher rpm will
decrease the temperature, thus providing
the heating/cooling cycles required for the
break-in process.
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5. Run two full tanks with the 10 x 6 prop and
then move to an 11 x 6 prop and repeat the
next two tanks.
6.You should now be ready to put on any of
the larger props and enjoy your engines full
performance.
Do not worry about an engine setting being
too rich during this process. When set
correctly, the engine will occasionally sound
as if it is misfiring (which it is). During the
climbing maneuvers this should go away and
might return during the diving maneuvers. If
it does not go away during the climbs then
land and adjust the high-speed needle by 1–2
clicks to the leaner position and take off and
fly again. Enjoy the break-in process—you are
doing a lot of flying.
EN
Baseline Needle Valve Settings
Your engine comes from the factory with the
needles set at the first run baseline settings
(High-Speed: 2 1/4 turns out, Low-Speed: 5
3/8 turns out). No adjustment is necessary.
If you find you need to move the carburetor back to the baseline settings follow the
procedure below.
Tip: The O-ring seal on both needle valves is
very tight and it can make the first
adjustments of your engine settings difficult.
If you find the seal too tight, the best method
to free it up is to actually open (counterclockwise) the needle valve a couple of turns
before trying to turn the needle in (clockwise).
Low-Speed Needle Valve Setting
High-Speed Needle Valve Setting
The low-speed needle valve should be set
5 3/8 turns from closed when the carburetor
barrel is completely closed. The proper way to
determine this is to:
The baseline high-speed needle valve setting
for initial start-up is 2 1/4 full turns from
closed. The proper way to determine this is to:
1. Disconnect your throttle arm from the
throttle pushrod. Insert the included 1.5mm
needle valve extension into the carburetor
and close the barrel until it is stopped by
the extension. The needle valve extention
establishes a 1.5mm opening as a baseline
for adjusting the low-speed needle.
2. While holding the throttle arm turn the low
speed needle clockwise until you feel it
trying to force the throttle arm to move and
open the carburetor barrel. Be careful here
and do not force it past this point.
1. Turn the high speed needle valve clockwise
until you reach its seat. Do not force it past
this point because you can damage the
needle and/or the needle seat.
2.Turn the high speed needle valve counterclockwise 2 full turns. This setting will be
rich by 1/4 to 1/2 turn but it will insure an
easy first start.
3. Our experience has been that the engine
likes to run between 1 1/2 and 1 3/4 turns
open once fully broken-in.
3. Turn the low speed needle valve counterclockwise (open/richen) by 5 3/8 turns.
This setting will be within +/– 1/16 of a
turn from a proper low-speed needle valve
setting.
4. Reconnect your throttle pushrod to the
throttle control arm.
Starting and Operating the 10GX Engine
Now that you have the baseline needle valve
settings you are ready to start your engine for
the first time. With the 10GX it is very
important to allow the temperature to
stabilize above 170°F (75°C) before making
any adjustments; adjusting prior to the engine
warming up will lead you to inaccurate
settings. As the engine warms up you will
notice the rpms naturally rising.
If you do not have a temp gun or have sensors
installed on your engine then allow the engine
to run at half throttle for at least 45 seconds
before attempting to set the high-speed
needle. If you have accurately set the lowspeed needle as described you should not
need to adjust it.
Priming
1. Make sure your ignition is off.
2.Open the throttle fully and either by holding a finger over the carburetor intake or
the muffler exhaust flip the propeller 4
times.
3. Remove your finger from either the carburetor or muffler exhaust and flip the engine
another 6 times.
4.Close the carburetor completely with your
throttle stick and then open it two detents
from closed. This will allow the engine to
start at a high throttle setting.
Because each fuel system and installation
is slightly different you may find the need
to modify the above procedure for your
individual setup. The above procedure should
work for most installations.
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Starting and Running the Engine
Until the engine is broken in use an electric
starter to start the engine. Once it is fully
broken in it can be started by hand but it is
easier and safer to start the engine with an
electric starter.
1. Turn on the ignition.
2.Rotate the propeller in a backwards direction against compression.
3. Push the starter firmly against the nose
cone and engage. The engine should start
relatively quickly, within 1-2 seconds. Once
the engine starts disengage the starter.
4.Let the engine run at mid-throttle for 45
seconds to stabilize the temperatures.
a. If the engine doesn’t start quickly disengage the starter. Continuously running
the starter can flood the engine.
b.Check to make that fuel is moving
through the carburetor system.
c. If the engine appears not to have any
fuel, repeat the priming procedure
above.
d.Repeat 1–4 of Starting and Running the
Engine.
High-Speed Needle Adjustment
Because of the small amount of fuel actually
needed for this engine, needle adjustments
need to be made in small increments. It may
take 5 seconds or more before you will notice
a running change in your engine after making
it. Be patient. Use a tachometer, this is a very
important part of properly setting your highspeed needle valve.
The procedure below is for ground setting the
needles prior to flight. The final adjustments
need to be made after noting the performance
in the air.
1. With engine started and warmed up, open
the throttle fully and note the rpm. Listen to
the engine.
a. If the engine occasionally mis-fires but
maintains a fairly constant rpm after 5
seconds, your engine is rich. Reduce the
throttle to idle and turn in (clockwise)
the high-speed needle 2 clicks. Repeat
this until the engine stops mis-firing.
b.If the engine does not mis-fire and the
rpm steadily decreases from the highest
rpm achieved when you opened the
throttle, it is lean. Reduce the throttle
to idle and open (counterclockwise)
the high-speed needle 2 clicks. Repeat
this until the engine maintains the rpm
achieved when the throttle is wide open
Your goal here is to achieve a good
transition between high and low speed,
and that the high-speed rpm will be
steady on the ground.
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2.Fly your aircraft for the in-air testing.
a. During flight, if the engine seems to slow
down or sag when climbing, your engine
is running slightly lean. Land the
airplane and open the high-speed
needle valve 2 clicks and take-off again.
b.During flight, if you hear the engine misfiring occasionally in level flight, this is
an indication it is running too rich. Land
the airplane and close the high-speed
needle valve 2 clicks and take-off again.
c. Repeat the above process until your
engine performance is steady and
repeatable. This high-speed needle
setting should not change more than
+/– 1–2 clicks in the future when using
the same propeller. If it does, something
is wrong in the fuel delivery system and
should be investigated.
If you are using onboard telemetry and have a
temperature monitor on the head of your engine, your readings should be between 300°F
(150°C) and 330°F (165°C). See the section on
adding a temperature monitor to your engine
for the proper positioning of your sensor.
EN
Low-Speed Needle Adjustment
If you have properly set the idle need, the
low-speed setting should be within 1/16th of
a turn from perfect. Remember we are talking
about minute amounts of fuel going through
the carburetor, any adjustments you now
make to the idle needle should be very, very
small.
Take into consideration the length in service
(e.g. break-in time) and the size of propeller
you are using. In the beginning using a smaller propeller, early in the break-in process, you
will not be able to achieve an idle much below
2800 rpm. The larger the propeller, the lower
your idle rpm will be, and the more broken in
your engine is will allow a lower idle rpm (13 x
6 should be about 22–2300 rpm).
Your engine will idle at low-speed needle settings from far to0 rich to far too lean without
any damage so the quality of the idle is not
a good indicator of the proper low-speed
needle settings. The transition from idle to full
throttle will be used to determine the position
of the low-speed needle.
1. With engine started and warmed up, open
the throttle fully then reduce to idle and
note the rpm. Listen to the engine.
2.Let the engine idle for ten seconds and
then rapidly advance the throttle to full
open. One of three things will occur:
a. The engine responds instantaneously.
Your low speed needle is set perfectly.
Now use your throttle trim to achieve the
lowest reliable idle.
b.The engine slowly accelerates to full
throttle. This indicates the low speed
needle is set two rich and that fuel is
building up in the crankcase. Shut the
engine off and lean (clockwise turn)
the low speed idle screw by an amount
equal to the thickness of the screwdriver
blade you are using to make the adjustment. Restart the engine and repeat
steps 1 and 2.
c. The engine stutters or stops on it way to
full throttle. This indicates the low speed
needle is set too lean. With the engine
off, richen (counter-clockwise turn) the
low speed idle screw by an amount
equal to the thickness of the screwdriver
blade you are using to make the adjustment. Restart the engine and repeat step
1 & 2.
3. Once you have achieved the instantaneous
throttle transition your low-speed needle is
set perfectly. Now go back and recheck your
high-speed needle valve setting. There is
some interaction between the two needles
so you might need to do this process (HS
and LS needle setting) a couple of times.
Patience here will reward you with an easy
to use engine. Don’t try to do this too
quickly.
4.Once you have achieved the instantaneous
throttle transition your low speed needle
is set perfectly and you should never have
to touch it again regardless of the propeller
you try to use.
13
EN
10GX Evolution Engines Specifications
Item
EVOE10GX
Disp
(c.i.)
.60
Bore
(mm)
24.0
Stroke
(mm)
Weight
(oz)
Crank K
Cylinder Propeller
(ISO)
21.5
15.3
1/4 x 28 ABC
12 x 6 @ 12,600 rpm
F
H
BA
G
E = height*
F = length
C
Dimensions
EVOE10GX
G= crankshaft thread size
D
A
36
H = muffler bolt spacing
B
44
C
17.5
D
57.4
E*
72
F
88.5
G
H
1/4 x 28 37
* Height is from engine C/L to top of cylinder head.
Troubleshooting Guide
If the Engine Does Not Start
• A possible cause is the piston in the
cylinder is seized: loosen and unscrew the
cylinder head bolts.
• Check and use a new spark plug if needed.
1. Carefully remove the cylinder liner.
• Check fuel lines.
2. Visually examine the piston and cylinder
to find the possible cause of the engine’s
mechanical problem.
• Check for proper mechanical function by
turning the engine over.
• Check that the carburetor is correctly
installed.
• Check that the muffler pressure line is attached and free from any bends or
blockages.
Mechanical Faults
If the engine cannot be turned over easily
• The most likely cause is the engine is
flooded and by turning the engine over you
are trying to compress the fuel, not air.
1. Remove the spark plug.
2. Cover the cylinder head with a cloth or
paper towel and turn the propeller over
to expel all the excess fuel.
3. Replace the spark plug and try starting
again.
14
Mechanical repairs must ALWAYS be
completed by an authorized Horizon Hobby
service center.
Maintenance
After each flying session:
1. Fully drain the fuel from the tank.
2.Start the engine and run it until the fuel is
completely run out of the engine.
3. Try starting the engine three more times or
until it will no longer fire. This gets all the
fuel out of the engine.
If you need additional help or have any
questions, please call Horizon’s Support
Team. Horizon has trained technicians
who are qualified to answer your engine
questions.
EN
Exploded View
2
1
21
3
4
5
22
6
23
7
17
13
16
15
20
14
12
41
11
10
24
19
9
8
35
18
36
25
37
34
39
31
32
26
33
38
29
30
30
40
27
28
15
EN
Parts List
#
Description
Part
#
Description
Part
1
Cylinder Head Screws
(6) 10GX
EVO40120
21
Carb Assy 10GX
EVOG10801
2
Spark Plug ¼-32 thread
EVOG10350
22
Carb Mounting O-Ring
EVOG10816
3
Cylinder Head 10GX
EVOG10103
23
Carb base washer
EVO46826
4
Cylinder Head Shim:
60NX, 10GX
EVO060112
24
Carb Retainer (Drawbar)
10GX
EVOG10129
5
Cylinder Piston Set 10GX EVOG10203
25
Evo 10GX Ignition Unit
EVO10101
6
Wrist Pin with Clips:
52NX, 60NX, 10GX
EVO052213
7
Connecting Rod 10GX
EVOG10204
8
Prop Washer & Nut:
1/4 x 28
EVO040228
9
Prop Driver 10GX
EVOG10219
10
Spacer Washer;
120NX, 10GX
EVO91225
11
Front Bearing;
120NX, 10GX
EVO91109
12
Crankcase with index
pin 10GX
EVOG10101
26 Carb Body & Spray Bar
10GX
EVOG10863
27
EVOG10872
Regulator Case
mid-section 10GX
28 Regulator Case Top 10GX EVOG10874
29
Regulator Spring 10GX
EVOG10880
30
Regulator Gasket Set
10GX
EVOG10875a
31
Regulator Piston Set
10GX
EVOG10876a
32
Carb Barrel 10GX
EVOG10813
33
Idle Needle Assy 10GX
EVOG10810
High Speed Needle
Assembly 10GX
EVOG10812
Hi Speed Needle 10GX
EVOG10829
13
BB, Rear (Open Race):
52NX, 60NX, 10GX
EVO052110
34
14
Drive Key; 120NX, 10GX
EVO91218
35
15
Crankshaft 10GX
EVOG10210
36
Fuel Nipple-12114:A
EVO100114
37
Idle Needle Stop
Screw-46825F:A
EVO100825F
38
Throttle Arm
EVO100864A
39
Carb Barrel Spring 10GX
EVOG10814
16
Rear Cover with Gasket:
52NX, 60NX, 10GX
EVOG10102
17
Back Cover Screw (4)
10GX
EVO40134
18
Muffler Assy 10GX
EVOG10601
19
Muffler Long Screw
120NX, 10GX
EVO120616
20 Muffler Mounting
Screw Set
EVO100E46A
2 YEAR LIMITED WARRANTY What this Warranty Covers - Horizon Hobby, Inc.,
(Horizon) warrants to the original purchaser that
the product purchased (the “Product”) will be free
from defects in materials and workmanship for a
period of 2 years from the date of purchase. What is Not Covered - This warranty is not transferable and does not cover (i) cosmetic damage, (ii) damage due to acts of God, accident,
misuse, abuse, negligence, commercial use,
or due to improper use, installation, operation
16
40 Carb regulator screws
(4) 10GX
EVOG12123
41
EVO060416
Engine Gasket Set:
60NX, 10GX
or maintenance, (iii) modification of or to any
part of the Product, (iv) attempted service by
anyone other than a Horizon Hobby authorized
service center, (v) Product not purchased from
an authorized Horizon dealer, or (vi) Product not
compliant with applicable technical regulations.
OTHER THAN THE EXPRESS WARRANTY ABOVE,
HORIZON MAKES NO OTHER WARRANTY OR REPRESENTATION, AND HEREBY DISCLAIMS ANY AND
ALL IMPLIED WARRANTIES, INCLUDING, WITHOUT
LIMITATION, THE IMPLIED WARRANTIES OF NON-
EN
INFRINGEMENT, MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. THE PURCHASER
ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET
THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE. Purchaser’s Remedy - Horizon’s sole obligation
and purchaser’s sole and exclusive remedy shall
be that Horizon will, at its option, either (i) service,
or (ii) replace, any Product determined by Horizon
to be defective. Horizon reserves the right to inspect any and all Product(s) involved in a warranty
claim. Service or replacement decisions are at
the sole discretion of Horizon. Proof of purchase
is required for all warranty claims. SERVICE OR
REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE PURCHASER’S SOLE AND EXCLUSIVE
REMEDY. Limitation of Liability - HORIZON SHALL NOT BE
LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR
PRODUCTION OR COMMERCIAL LOSS IN ANY WAY,
REGARDLESS OF WHETHER SUCH CLAIM IS BASED
IN CONTRACT, WARRANTY, TORT, NEGLIGENCE,
STRICT LIABILITY OR ANY OTHER THEORY OF LIABILITY, EVEN IF HORIZON HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES. Further, in
no event shall the liability of Horizon exceed the
individual price of the Product on which liability
is asserted. As Horizon has no control over use,
setup, final assembly, modification or misuse, no
liability shall be assumed nor accepted for any resulting damage or injury. By the act of use, setup
or assembly, the user accepts all resulting liability.
If you as the purchaser or user are not prepared to
accept the liability associated with the use of the
Product, purchaser is advised to return the Product immediately in new and unused condition to
the place of purchase.
Law - These terms are governed by Illinois law
(without regard to conflict of law principals). This
warranty gives you specific legal rights, and you
may also have other rights which vary from state
to state. Horizon reserves the right to change or
modify this warranty at any time without notice.
WARRANTY SERVICES
Questions, Assistance, and Services - Your local
hobby store and/or place of purchase cannot provide warranty support or service. Once assembly,
setup or use of the Product has been started, you
must contact your local distributor or Horizon directly. This will enable Horizon to better answer
your questions and service you in the event that
you may need any assistance. For questions or
assistance, please visit our website at www.horizonhobby.com, submit a Product Support Inquiry,
or call 877.504.0233 toll free to speak to a Product
Support representative.
Inspection or Services - If this Product needs to
be inspected or serviced and is compliant in the
country you live and use the Product in, please
use the Horizon Online Service Request submission process found on our website or call Horizon
to obtain a Return Merchandise Authorization
(RMA) number. Pack the Product securely using
a shipping carton. Please note that original boxes
may be included, but are not designed to withstand the rigors of shipping without additional
protection. Ship via a carrier that provides tracking and insurance for lost or damaged parcels, as
Horizon is not responsible for merchandise until
it arrives and is accepted at our facility. An Online
Service Request is available at http://www.horizonhobby.com/content/_service-center_renderservice-center. If you do not have internet access,
please contact Horizon Product Support to obtain
a RMA number along with instructions for submitting your product for service. When calling Horizon, you will be asked to provide your complete
name, street address, email address and phone
number where you can be reached during business hours. When sending product into Horizon,
please include your RMA number, a list of the
included items, and a brief summary of the problem. A copy of your original sales receipt must be
included for warranty consideration. Be sure your
name, address, and RMA number are clearly written on the outside of the shipping carton.
NOTICE: Do not ship LiPo batteries to Horizon. If
you have any issue with a LiPo battery, please
contact the appropriate Horizon Product Support
office.
Warranty Requirements - For Warranty consideration, you must include your original sales receipt
verifying the proof-of-purchase date. Provided
warranty conditions have been met, your Product
will be serviced or replaced free of charge. Service
or replacement decisions are at the sole discretion
of Horizon.
Non-Warranty Service - Should your service not
be covered by warranty, service will be completed
and payment will be required without notification
or estimate of the expense unless the expense
exceeds 50% of the retail purchase cost. By submitting the item for service you are agreeing to
payment of the service without notification. Service estimates are available upon request. You
must include this request with your item submitted for service. Non-warranty service estimates
will be billed a minimum of ½ hour of labor. In addition you will be billed for return freight. Horizon
accepts money orders and cashier’s checks, as
17
EN
well as Visa, MasterCard, American Express, and
Discover cards. By submitting any item to Horizon
for service, you are agreeing to Horizon’s Terms
and Conditions found on our website http://www.
horizonhobby.com/content/_service-center_render-service-center. NOTICE: Horizon service is limited to Product
compliant in the country of use and ownership. If
non-compliant product is received by Horizon for
service, it will be returned unserviced at the sole
expense of the purchaser.
Warranty and Service Contact Information
Horizon Hobby
United States
of America
Horizon Service Center
(Electronics and
engines)
Horizon Product
Support
(All other products)
Address
4105 Fieldstone Rd
Champaign, Illinois,
61822 USA
Phone Number/Email Address
877-504-0233
Online Repair Request: visit
www.horizonhobby.com/service
877-504-0233
productsupport@horizonhobby.com
Horizon Hobby Limited
Units 1-4 , Ployters
Rd, Staple Tye,
Harlow, Essex,
CM18 7NS, United
Kingdom
+44 (0) 1279 641 097
sales@horizonhobby.co.uk
Germany
Horizon Technischer
Service
Christian-JungeStraße 1
25337 Elmshorn,
Germany
+49 (0) 4121 2655 100
service@horizonhobby.de
France
Horizon Hobby SAS
11 Rue Georges
Charpak
77127 Lieusaint,
France
+33 (0) 1 60 18 34 90
infofrance@horizonhobby.com
United
Kingdom
Compliance Information for the European Union
Declaration of Conformity (in accordance with ISO/IEC 17050-1)
No. HH2012092301
Product(s): EVO 10cc (.60 cu. in.) Gas RC Engine
Item Number(s): EVOE10GX
The object of declaration described above is in conformity with the requirements of the
specifications listed below, following the provisions of the European EMC Directive 2004/108/EC:
EN55022:2010
EN55024:2010
Signed for and on behalf of:
Horizon Hobby, Inc.
Champaign, IL USA
September 23, 2012
Steven A. Hall
Executive Vice President and Chief Operating Officer
International Operations and Risk Management
Horizon Hobby, Inc.
Instructions for disposal of WEEE by users in the European Union
This product must not be disposed of with other waste. Instead, it is the user’s responsibility to dispose of their waste equipment by handing it over to a designated collections point
for the recycling of waste electrical and electronic equipment. The separate collection and recycling
of your waste equipment at the time of disposal will help to conserve natural resources and ensure
that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city
office, your household waste disposal service or where you purchased the product.
18
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