Horizon Hobby EVOLUTION 62GX User manual

62GX
Evolution®Gas Engines
®

2
All instructions, warranties and other collateral documents are subject to change at the sole
discretion of Horizon Hobby, LLC. For up-to-date product literature, visit horizonhobby.com and
click on the support tab for this product.
NOTICE
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.
MEANING OF SPECIAL LANGUAGE
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 use with incompatible
components or alter this product in any way outside of the instructions provided by Horizon Hobby,
LLC. 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.
• 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.

3
• Always use the throttle linkage to shut off the air or turn off the engine power switch 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 purchase of one of the exciting new engines in the Evolution®gas engine
series. All of the Evolution brand gas engines have been painstakingly designed and tested
to ensure a hassle-free experience without giving away anything in expected performance or
durability and are backed by a 2-year limited warranty. This manual, when read and followed, will
guide you through the simple steps to your success.
Mounting the 62GX is simple with the overall dimensions designed to fit current giant-scale offerings.
Because its propeller and muffler mounting dimensions match other popular 50cc and 60cc engines,
the 62GX is a good fit in many existing 50–60cc airframes.
Welcome to the Evolution family.
Included Content
Engine
EVOG33350 Spark Plug (CM6)
EVOA113 Evolution/Spektrum™Telemetry RPM Adapter Cable
EVOA121 Sintered Plastic Filter Clunk
Optional Items
EVOA100 Optical Electronic Ignition Kill Switch
EVOA108 Locking Fuel Can Cap
HAN155 Ultra Fuel Pump
HAN156 Tachometer

5
A
B
C
Secure the engine to the airplane firewall using either M6 or 1/4–20 bolts. Use spacers or
standoffs as needed to set the correct firewall-propeller distance according to the airplane
manufacturer’s instructions.
Refer to page13 for mounting dimensions.
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.
Installing the Engine
A. Choke Lever
B. Throttle Arm
C. Fuel Inlet

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1. Use the provided ball-link to attach the throttle
linkage to the throttle arm on the carburetor.
2. Power ON the transmitter and receiver. Move
the throttle stick and throttle trim to center.
3. Place the servo arm on the throttle servo so
the arm is perpendicular (90°) to the throttle
linkage.
4. Ensure the throttle servo is moving in the
appropriate direction. The throttle servo arm
should move towards the engine when the
throttle stick is moved to high throttle. If it
doesn’t, reverse the servo direction in your
transmitter. If you use servo reversing, you will
need to rebind your transmitter to the receiver
for failsafe to function properly.
5. Move the throttle stick to low throttle on the
transmitter. Reduce the throttle trim to its
lowest setting.
6. Move the linkage connected to the throttle
body to full-idle (away from engine). On
the servo arm, find the hole that is closest to
16mm (5/8 in) from the center of the arm.
Mark the pushrod where it meets this hole.
16mm (5/8 in)
7. Using pliers, bend the pushrod so there is a
90° bend at the mark.
8. Using a pushrod keeper, secure the pushrod
in the servo arm.
9. Check that the throttle arm on the carburetor
can travel fully open and fully closed (both
have hard stops). Adjust your transmitter
endpoints to ensure full travel.
10. If there is a large difference between the
endpoints, adjust the endpoints and sub-trim
to find a balance where the endpoints are
approximately within 10% of each other.
Connecting the Throttle Linkage
Installing a Muffler (EVOM6 Inverted Wraparound Muffler illustrated (not included))
The muffler mounting accessory package
includes mounting screws (2), lock washers (2),
muffler gaskets (2) and an L-wrench.
We suggest using high-temperature RTV
silicone as a locking agent on the muffler screws
to keep them tight.
For reliable muffler retention, 12mm of thread
engagement is recommended.
IMPORTANT: Tighten the muffler screws after the
first few tanks of fuel. The muffler screws may
loosen from heat and vibration. After the third
tightening, no further muffler loosening should
occur.
1. Put a lock washer on each of the muffler
screws. Push the muffler screws through the
muffler.
2. Place the muffler gasket over the muffler
mounting screws.
3. Align the muffler gasket with the exhaust
opening and the muffler mounting screws.
4. Tighten the muffler screws.

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Throttle Curve Setup
1. Connect medium or large diameter fuel tubing
to the carburetor and the fuel tank supply line.
2. Connect medium or large diameter fuel
tubing to the fuel tank vent line. Run this fuel
line either around the back of the tank or
make a loop on top of the tank to create an
“anti-syphoning” loop. Take the other end of
the fuel line and route it outside the airplane
fuselage.
We recommend you use an external fuel fitting
in order to fuel the airplane without needing to
remove any hatches or cowls.
Attaching the Fuel Lines
The engine’s carburetor butterfly valve provides
non-linear engine response to throttle changes
(greater power increase between low throttle to
50% than 50% to full throttle). We recommend
using the Throttle Curve feature on your transmitter
to provide a more linear response.
Using these Throttle Curve settings, shown
from a Spektrum™DX18 transmitter screen shot,
with a properly setup throttle linkage will provide
a very linear feel to the throttle.
1. Ensure you have set up the throttle linkage
as described in the Connecting the Throttle
Linkage section. It is very important that the
low throttle and high throttle endpoint travel
of your servo be as close to even as possible
(i.e. Low throttle, trim closed -100%, high
throttle 100%). A variation of as much as
10% between these two values is tolerable.
2. Enter the numbers from the diagram into your
transmitter’s Throttle Curve menu and activate
exponential (if applicable).
3. Once the engine is started and running
correctly, check the feel of the throttle
response. Adjust it to your liking through your
transmitter’s programming screen.

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Propeller Drilling
Use a drill guide to drill four holes in the propeller. The guide ensures that the propeller bolts align
with the driver and do not cross-thread. Using a drill press is highly recommended.
1. If your propeller has a 10mm (0.39 in) center
hole, move to Step 2. If not, use a propeller
reamer to enlarge the center hole to 10mm.
2. Place the drill guide into the propeller center
hole.
3. Align the bolt pattern where it is convenient
when mounted on the engine. See below for
suggested alignment. It is best to check this on
your engine first.
60 °
45°
4. While using a secure method to hold the
propeller and drill guide (we recommend a
drill press and clamp), drill the first hole (order
does not matter). Drill carefully and take your
time. The more precisely you drill the propeller,
the better the fitment of the bolts. If drilling a
carbon-fiber propeller, pull the bit out every
few seconds to clear the hole of any material
and allow the bit to cool. Drilling through
carbon fiber is tough on drill bits and takes
longer to complete than wood or plastic.
5. Before drilling any more holes, take a propeller
bolt and place it in the newly created hole. This
will help keep the drill guide aligned and keep it
from rotating when drilling the other holes.
6. Drill the rest of the holes.
7. Remove the drill guide.
8. Use a chamfering tool to deburr the holes on
each side of the propeller.
Attaching the Propeller and Spinner
Refer to the Propeller Drilling section for
instructions on how to properly drill a propeller.
1. Remove the 4 propeller screws from the prop
driver.
2. Insert the 4 screws through the front prop
washer, followed by the propeller, spinner
backplate, rear prop washer* and finally
thread them into the prop driver.
3. Begin to tighten all 4 screws until they are all
hand-tight.
4. Tighten all screws with the included 4mm
L-wrench in a clockwise circle until all screws
are tight.
5. Install the spinner cone. Make sure the spinner
cone is not touching the propeller. Trim the
propeller opening if necessary.
6. Tighten the spinner screw to secure the
spinner cone.
*The rear prop washer is optional. It should
always be used for additional bearing area
when using a wooden propeller without a
spinner. Removing it will reduce the engine
length by 5mm.

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The electronic ignition requires a voltage input
of 6.0—8.4VDC. We recommend a 2S Li-Po
battery (such as the Spektrum Li-Po Receiver
Pack 2000mAh (SPMB2000LP)). The maximum
current draw at full throttle is 650mA, and
average current draw is 325mA.
The assembly consists of:
• Ignition module with battery connector,
ignition sensor connector, tachometer readout
connector and spark plug connector
Mounting Your Electronic Ignition
• You can mount the unit in any orientation and
place that is convenient for your installation.
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 with
tie wraps after wrapping the ignition in 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 provide
adequately sized holes that will allow you to
pull either the ignition sensor connector or the
spark plug cap connector through the holes.
• Mount a high-quality 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 system on and off. Being able
to easily shut off the ignition power supply is
an important safety consideration.
• For added security and controllability, add
an additional radio-operated kill switch (such
as the Optical Ignition Kill Switch EVOA100)
between the ignition system battery and the
input side of the ON/OFF switch.
• If desired, you can connect the included
Evolution/Spektrum Telemetry Adapter
Cable (EVOA113) to the connector labeled
“Telemetry” on the wiring harness. Plug
the other end of the adapter cable into the
Spektrum telemetry module’s rpm input port.
• Connect the spark plug connector to the
spark plug. This spark plug connector
utilizes a locking snap ring to ensure a solid
connection. Push it straight onto the spark
plug to secure.
• Make sure you charge your ignition battery.
• Ignition sensor (already attached to your
engine)
• Sensor magnet (already installed in the prop
drive hub of your engine)
• Ignition switch (not included)
• 2S Li-Po battery (not included)
Connecting the Electronic Ignition
Baseline Needle Settings
The baseline needle settings for your engine are
1.5 turns out for the high-speed needle, and
1.75 turns out for the low-speed needle.
To adjust the settings, screw the needles in by
rotating them clockwise. They will seat gently—
do not force them, this could damage the
needles or carburetor body. Open the needles
the number of turns listed above.
Low speed needle
High speed needle

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Fuel Delivery System
It is very important to properly construct your
fuel supply system to avoid operating problems.
Our experience has shown that many seemingly
engine related operating problems are in fact
fuel delivery problems.
Fuel Filtering
We recommend filtering the fuel at two locations:
1. Between the fuel jug and the airplane fuel
tank.
2. Within the fuel tank itself (with the included
Sintered Plastic Filter Clunk (EVOA121)).
Tank Choice and Construction
Choose a tank with at least 24 oz (700mL)
capacity. A 24 oz tank will yield 12 minutes of
flying time. This engine has a fuel consumption
rate of approximately 2.2 oz/min (65 mL/min)
at full throttle.
• Ensure you use a tank stopper made for use
with gasoline.
• Ensure you use the included sintered plastic
filter clunk inside the fuel tank.
• Ensure the dedicated fueling/defueling line
is sealed from leaks. We recommend the
HAN116 Fuel Filler Assembly for ease of use
when installed on your airplane. This fuel filler
package also includes the “T” fitting required
for the tank system as outlined above.
Vent tube Gasoline-resistant
rubber stopper
Fuel tank the fuselage
for fueling
“T” fitting
Gasoline-resistant tubeFilter clunk
fuel inlet
Vent to outside
To outer fuselage
To carburetor
Fuel
This engine requires a mix of 32:1 gas to oil
ratio for break-in and normal operation.
To properly mix the fuel, add 4.0 oz of high
quality 2-stroke oil to one gallon (or 32 mL of oil
to one liter) of 87–93 octane fuel.
We tested primarily with Red Line two-stroke oil.
Other high-quality two-stroke oils will also work
well.
Mixtures as rich as 25:1 are acceptable.

11
Engine Break-in
Your engine has been test run at the factory but not fine tuned. It needs to be broken-in to ensure
long life of all components. This engine features a ringed-piston design, which requires a specific
break-in procedure to ensure a tight seal between the piston ring and cylinder. For this to be
accomplished, this process requires repeated heating and cooling cycles. The ring needs to seat
itself with the cylinder walls for it to develop a good seal.
Important considerations during break-in
• Perform the break-in process with the engine
mounted on your airplane. There is no need
to bench-run the engine prior to mounting it
on your airplane.
• Use a lightly loaded break-in prop to begin
your break-in process (22 x 10 or 23 x 9).
• Use the recommended fuel with a 32:1 gas
to oil ratio.
Break-in process
• First tank of fuel: Run the engine on the
ground for its first tank of fuel and DO NOT
exceed 4000 RPM. Cycle the throttle between
idle and half throttle every minute.
• Second tank of fuel: Do not run at full throttle
on the ground for more than 30 seconds at
a time. Fly the airplane and avoid extended
periods of heating the engine. Be sure to
mix in some cooling dives and lower-throttle
flying.
• Third tank of fuel: Fly the engine at high
throttle settings for longer periods of time, up
to one minute. This will help the piston ring
and cylinder to expand and contract, helping
the breaking-in process.
• Fourth tank of fuel: Select one of the
recommended propellers for normal operation
and mount it on your engine. Continue
to break-in the engine in flight. Use high
throttle settings for extended periods of time.
Monitor cylinder head temperatures to avoid
overheating.
Telemetry is a huge asset to help you take
care of your engine. In order to receive RPM
telemetry, you will need to connect the Evolution
Ignition Telemetry Adapter (EVOA113) between
the Telemetry connector on the ignition and the
RPM port on your Spektrum telemetry module.
Telemetry systems other than Spektrum may
require a dedicated RPM sensor.
We recommend using the Spektrum™DSMX®Full
Range Aircraft Telemetry Module (SPM9548)
in conjunction with the included adapter. This
system allows you to see real-time RPM and
temperature readings from the engine.
The temperature sensor should be wrapped
around the base of the spark plug on the
cylinder head with the thermistor facing towards
the rear of the engine. Using telemetry gives you
an accurate representation of actual temperature
and RPM figures during use, and warnings
can be set for temperatures outside a specified
range.
The temperature range should be 190–290°F
(87–143°C). Set your maximum-temperature
warning at 310°F (155°C). If your engine is
continually near this peak temperature or higher,
immediately decrease throttle to bring the
temperature down.
If this continues to occur, land the airplane
and investigate more effective cooling for the
engine. Often this is accomplished by adding
baffling that guides cooling air directly through
the cylinder fins. It is not good for the engine to
run at temperatures this high and could cause
damage if not attended to.
Telemetry

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If the Engine Does Not Start
• Check and use a new spark plug if needed.
Remove the spark plug and reinstall it into
the ignition plug cap. With the engine power
system ON, move the sensor magnet past the
sensor quickly (by flipping prop or manually
moving the sensor past the magnet). You
should be able to either see the spark or
hear the clicking of the spark plug firing.
The engine RPM needs to exceed 180 RPM
before the ignition system will fire the spark
plug. Make sure to rapidly move the magnet
past the sensor when checking for proper
operation.
• Check fuel lines for damage or kinks. If any
of the lines are restricted, the fuel system will
likely not operate. Clean and intact lines are
essential for the system to operate properly.
• Check for proper mechanical function by
turning the engine over.
• Check that the carburetor is correctly
installed and that all gaskets are intact and
undamaged.
• Check that the vent line is attached and free
from any bends or blockages.
If the engine runs erratically
• Check for fuel systems problems. Are there
any holes in the fuel lines (inluding the clunk
line inside the fuel tank) or other possible
sources of air leaks?
• Ensure the ignition system is working properly
and the ignition system battery is charged.
Mechanical Faults
If you suspect the engine is flooded:
1. Remove the spark plug.
2. Cover the cylinder head with a cloth or
paper towel and turn the propeller over to
expel the excess fuel.
3. Replace the spark plug and try starting
again.
If the engine cannot be turned over easily:
• A possible cause is the piston is seized
in the cylinder: loosen and unscrew the
muffler bolts. Visually inspect the piston and
cylinder through the exhaust port. If there
are excessive/deep scratches or grooves in
the piston, please contact Horizon Hobby
Customer Support for more information.
Repair of a seized piston/cylinder is
mechanical and should not be attempted.
Mechanical repairs must ALWAYS be completed
by an authorized Horizon Hobby service center.
Maintenance
After each flying session, fully drain the fuel from
the tank.
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.
Troubleshooting Guide
It is critical to the proper operation of your 62GX
that you use the included filtered clunk. Fuel
should be filtered in your fueling system before
it enters your model. Failure to properly filter the
fuel before it reaches your engine can introduce
contamination into the fuel system.
1. Power ON the radio system but leave the
engine power system OFF.
2. Close the choke valve on the carburetor.
3. Move the throttle trim to the center position
and keep the throttle stick at idle.
4. Power ON the engine power system.
5. Rotate the propeller until it is against
compression. Flip the propeller through
compression until the engine fires.
6. Open choke valve on the carburetor and
repeat step 5 until the engine starts.
7. Let the engine run at high idle for 30 seconds
to stabilize the temperatures.
8. Lower the throttle trim to your desired idle
setting.
If the engine doesn’t start quickly
9. If the engine appears not to have any fuel,
repeat the priming procedure in step 2—5.
Starting and Running the Engine

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Specifications
38.50mm
(1.52in)
88.00mm
(3.46in)
88.50mm
(3.48in)
41.00mm
(1.61in)
46.65mm
(1.84in)
129.50mm
(5.10in)
44.50mm
(1.75in)
75.00mm
(2.95in)
126.4mm
(4.98in)
147.90mm
(5.82in)
Ø30.00mm (Ø1.18in)
Propeller
Bolt
Dimension
Engine
Mount
Dimension
78.00mm
(3.07in)
66.00mm
(2.60in) 157.50mm
(6.20in)
Spark Plug Cap
Disp 62cc (3.8 cu in) Weight
Bore 1.80 in (46.0mm) Engine Only 52.3 oz (1483 g)
Stroke 1.50 in (37.0mm) Ignition 4.3 oz (122 g)
Cylinder Nikasil®- plated
aluminum EVOM6 Muffler Weight (not included) 8.2 oz (233 g)
Plug Type CM-6 Muffler Threads M5
Baseline Needle
Settings 1.5H, 1.75L
Propeller Specifications
Propeller Typical Ground RPM
Xoar (wood) 22 x 10 7000
Xoar (wood) 23 x 8 7000
Mejzlik (CF) 23 x 8 7100
Mejzlik (CF) 23 x 10 6900
Mejzlik (CF) 24 x 10 6400
Falcon (CF) 23 x 9 7200
Falcon (CF) 23 x 10 7000
Optional Parts
Part # Description
EVOM6 Inverted Wraparound Muffler (not included)
EVOG620328 Exhaust Mount Bolts with Gasket M5 x 16 (not included)
EVOA113 Evolution®/Spektrum™Telemetry RPM Adapter Cable
EVOA121 Sintered Plastic Filter Clunk

14
Parts List
# Description Part
1 Walbro Carburetor 62GX EVOG620843
2 Front Prop Washer 62GX EVOG620701
3 Rear Prop Washer 62GX EVOG620702
4 Prop Bolt Set (4) M5 x 45 62GX EVOG620703
5 Prop Drive Retaining Bolt 62GX EVOG620704
6 Prop Driver with Key 62GX EVOG620705
7 Ignition Pickup Magnet 62GX EVOG620706
8 Front Crankcase with Bearings 62GX EVOG620507
9 Front Crankshaft Bearing 62GX EVOG620508
10 Rear Crankshaft Bearing 62GX EVOG620509
11 Crankcase Align Keys (2) 62GX EVOG620510
12 Woodruff Key (2) 62GX EVOG620111
13 Crankshaft 62GX EVOG620112
14 Crankshaft Stuffer Assembly 62GX EVOG620114
15 Conrod Assembly 62GX EVOG620216
16 Conrod Lower Bearing 62GX EVOG620218
17 Conrod Retaining Screw 62GX EVOG620219
18 Piston Pin with Clips 62GX EVOG620421
19 Piston 62GX EVOG620423
20 Piston Ring 62GX EVOG620424
21 Cylinder Gasket 62GX EVOG620325
22 Crankcase Bolt Set 62GX EVOG620326
23 Exhaust Flange Gasket (2) 62GX EVOG620327
24 Cylinder Head 62GX EVOG620329
25 Rear Crankcase 62GX EVOG620531
26 Reed Cage Gasket Set 62GX EVOG620834
27 Aluminum Reed Cage 62GX EVOG620835
28 Reed Mount Strap (2) 62GX EVOG620836
29 Intake Reeds (2) 62GX EVOG620837
30 Carburetor Mounting Block 62GX EVOG620840
31 Carburetor Mounting Bolt Set 62GX EVOG620841
32 Carburetor Gasket Set (3 pcs) 62GX EVOG620842
33 Engine Gasket Set 62GX EVOG620850
34 Ignition Sensor and Mount Set EVOG620601
35. Carburetor Velocity Stack EVOG620846
36. Spark Plug (CM6) EVOG33350

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Exploded View
1
35
32, 33
31
31
22
30 27
2928
32,33
28
29
32,33
22
25
18
23
21, 33
18
18
19
20
21, 33
24
22
36
17
16
15
2
4
5
3
6
8,9
34
8
8,10
14
14
14
12
13
34
11

16
2-YEAR LIMITED WARRANTY
What this Warranty Covers - Horizon Hobby, LLC
(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
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-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 the toll free telephone
number referenced in the Warranty and Service
Contact Information section to speak with a
Product Support representative.

17
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_render-service-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 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.
ATTENTION: Horizon service is limited to Product
compliant in the country of use and ownership.
If received, a non-compliant Product will not be
serviced. Further, the sender will be responsible
for arranging return shipment of the un-serviced
Product, through a carrier of the sender’s choice
and at the sender’s expense. Horizon will hold
non-compliant Product for a period of 60 days
from notification, after which it will be discarded.

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Warranty and Service Contact Information
Country of
Purchase Horizon Hobby Contact Information Address
United States of
America
Horizon Service
Center
(Repairs and Repair
Requests)
servicecenter.horizonhobby.
com/RequestForm/
4105 Fieldstone Rd
Champaign, Illinois,
61822 USA
Horizon Product
Support
(Product Technical
Assistance)
www.quickbase.com/db/
bghj7ey8c?a=GenNewRecord
888-959-2305
Sales [e-mail]
888-959-2305
United Kingdom Service/Parts/ Sales: Horizon
Hobby Limited
[e-mail] Units 1–4 , Ployters Rd
Staple Tye, Harlow, Essex,
CM18 7NS, United
Kingdom
[phone]
Germany
Horizon
Technischer Service [e-mail] Christian-Junge-Straße 1
25337 Elmshorn,
Germany
Sales: Horizon
Hobby GmbH [phone]
France Service/Parts/ Sales: Horizon
Hobby SAS
[e-mail] 11 Rue Georges Charpak
77127 Lieusaint, France
[phone]
China Service/Parts/ Sales: Horizon
Hobby – China
[e-mail] Room 506, No. 97
Changshou Rd.
Shanghai, China
200060
[phone]
Compliance Information for the European Union
EU Compliance Statement:
Horizon Hobby, LLC hereby declares that this product is in compliance with the essential
requirements and other relevant provisions of the R&TTE, EMC, and LVD Directives.
A copy of the EU Declaration of Conformity is available online at: http://www.
horizonhobby.com/content/support-render-compliance.
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.

19
Alle Anweisungen, Garantien und anderen zugehörigen Dokumente können im eigenen Ermessen
von Horizon Hobby, LLC jederzeit geändert werden. Die aktuelle Produktliteratur finden Sie auf
horizonhobby.com unter der Registerkarte „Support“ für das betreffende Produkt.
HINWEIS
Die folgenden Begriffe werden in der gesamten Produktliteratur verwendet, um auf unterschiedlich
hohe Gefahrenrisiken beim Betrieb dieses Produkts hinzuweisen:
HINWEIS: Wenn diese Verfahren nicht korrekt befolgt werden, können sich möglicherweise
Sachschäden UND geringe oder keine Gefahr von Verletzungen ergeben.
ACHTUNG: Wenn diese Verfahren nicht korrekt befolgt werden, ergeben sich wahrscheinlich
Sachschäden UND die Gefahr von schweren Verletzungen.
WARNUNG: Wenn diese Verfahren nicht korrekt befolgt werden, ergeben sich wahrscheinlich
Sachschäden, Kollateralschäden und schwere Verletzungen ODER mit hoher Wahrscheinlichkeit
oberflächliche Verletzungen.
SPEZIELLE BEDEUTUNGEN
WARNUNG: Lesen Sie die GESAMTE Bedienungsanleitung, um sich vor dem Betrieb mit
den Produktfunktionen vertraut zu machen. Wird das Produkt nicht korrekt betrieben, kann
dies zu Schäden am Produkt oder persönlichem Eigentum führen oder schwere
Verletzungen verursachen.
Dies ist ein hochentwickeltes Hobby-Produkt. Es muss mit Vorsicht und gesundem
Menschenverstand betrieben werden und benötigt gewisse mechanische Grundfähigkeiten. Wird
dieses Produkt nicht auf eine sichere und verantwortungsvolle Weise betrieben, kann dies zu
Verletzungen oder Schäden am Produkt oder anderen Sachwerten führen. Dieses Produkt eignet
sich nicht für die Verwendung durch Kinder ohne direkte Überwachung eines Erwachsenen.
Versuchen Sie nicht ohne Genehmigung durch Horizon Hobby, LLC, das Produkt zu zerlegen,
es mit inkompatiblen Komponenten zu verwenden oder auf jegliche Weise zu erweitern.
Diese Bedienungsanleitung enthält Anweisungen für Sicherheit, Betrieb und Wartung. Es ist
unbedingt notwendig, vor Zusammenbau, Einrichtung oder Verwendung alle Anweisungen und
Warnhinweise im Handbuch zu lesen und zu befolgen, damit es bestimmungsgemäß betrieben
werden kann und Schäden oder schwere Verletzungen vermieden werden.
ACHTUNG: Dieses Produkt kann bei dem Betrieb extrem heiß werden was zu
Verbrennungen führen kann.
Nicht geeignet für Kinder unter 14 Jahren. Dies ist kein Spielzeug.
Sicherheitswarnungen
Modellmotoren haben eine erhebliche Leistung, die bei unsachgemäßer Verwendung eine
Gefährdung darstellen kann. Nutzen Sie bei dem Betrieb immer den gesunden Menschenverstand
und beachten alle Sicherheitshinweise bei dem Umgang mit dem Motor, oder allen Tätigkeiten
in diesem Zusammenhang. Das nicht befolgen der Sicherheitsbestimmungen kann zu ernsthaften
Personen- und Sachbeschädigungen führen.
• Stellen Sie immer sicher dass Zuschauer, insbesondere Kinder, mindestens 9,90 Meter entfernt
sind wenn Sie den Motor laufen lassen.
• Stellen Sie vor JEDEM Flug sicher, dass der Propeller fest mit der Kurbelwelle verbunden ist und
alle Halter/Befestigungen sicher angezogen/befestigt sind. Verwenden Sie zum sichern von
Schrauben und Muttern blauen Schraubensicherungslack.
• Halten Sie Kleinteile immer aus der Reichweite von Kindern, da diese verschluckt werden
können.
• Sichern Sie immer das Flugzeug bevor Sie den Motor starten.
• Halten Sie immer das Gesicht und den Körper weg vom Propellerkreiswenn Sie den Motor
starten oder wenn er läuft.
• Tragen Sie immer eine Schutzbrille beim Starten oder Laufen lassen des Motors.

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• Bewahren Sie ihren Kraftstoff immer an einem sicheren Ort weit weg von möglicher
Funkenbildung, Hitze oder zündfähigen Stoffen auf.
• Stellen Sie immer sicher, dass das Luftfahrzeug korrekt gesichert ist und sich bei Motorstart nicht
bewegen/anrollen kann.
• Führen Sie nach den Einstellungen vor dem Erstflug den Bindevorgang erneut aus.
• Stellen Sie immer sicher dass die Failsafeeinstellung des Gaskanal auf Motor aus/Leerlaufsteht.
• Führen Sie immer vor dem Flug einen Reichweitentest durch.
• Schließen Sie immer über das Gasgestänge die Drosselklappe um die Luftzufuhr zu stoppen oder
nutzen den Zündschalter um den Motor auszuschalten.
• Gebrauchen Sie niemals Ihre Hände, Finger oder andere Körperteile um den Propeller zu
stoppen.
• Werfen Sie niemals etwas in den Propeller um ihn zu stoppen.
• Lassen Sie niemals den Motor über losen Untergrund wie Sand oder Kies laufen, damit nicht die
Gefahr besteht dass der Motor kleine Teile unkontrolliert hochschleudert.
• Tragen Sie niemals bei dem Betrieb des Modells lose Kleidung oder ein loses Nackenband/
Umhängegurt, da sich diese Teile im Propeller verfangen können.
• Führen Sie niemals bei Betrieb oder Umgang mit dem Motor lose Gegenstände wie
Schraubendreher, Stifte, etc.. in Ihren Taschen. Diese könnten in den Propeller fallen.
• Lassen Sie niemals Kraftstoff in Berührung mit Mund oder Augen kommen da dieser giftig ist.
• Lagern Sie Kraftsoff in eindeutig bezeichneten Behältnissen ausserhalb der Reichweite von
Kindern.
Sicherheitsrichtlinien
• Montieren Sie den Motor korrekt auf einer geeigneten Werkbank oder einem qualitativ
hochwertigen Motorträger.
• Verwenden Sie immer Propeller mit der richtigen Größe und Steigung. Sehen Sie dazu in die
Propellerliste in dieser Anleitung.
• Überprüfen Sie immer vor der Montage des Propellers dass dieser einwandfrei gewuchtet ist.Das
nichtbeachten könnte zu Motorschäden oder zu Schäden am Flugzeug führen.
• Verwenden Sie immer falls möglich einen Elektrostarter.
• Verwenden Sie keine Propeller die Knicke, Risse, Brüche oder sonstige Beschädigungen
aufweisen.
• Lassen Sie den Motor nur in gut belüfteten Bereichen laufen. Modellmotoren produzieren giftige
Kohlenmonoxid Abgase.
• Lagern Sie ihren Kraftstoff in einem geschlossenen wasserdichten Behältnis.
• Lagern Sie Kraftstoff nur in kühlen trockenen Orten. Lassen Sie Kraftstoffbehälter nicht in direkten
Kontakt mit Beton kommen, da der Kraftstoff dadurch Feuchtigkeit aufnehmen könnte.
• Entsorgen Sie immer verantwortungsvoll Kraftstoff der durch Kondensation Feuchtigkeit (Wasser)
aufgenommen hat.
• Schütten Sie niemals ungebrauchten Kraftstoff aus dem Tank in den Kanister.
• Modifizieren, verändern und reparieren Sie niemals Propeller.
• Hantieren Sie nicht mit Modellmotoren, Schalldämpfern, Auspuffen oder Resorohren bis diese
vollständig abgekühlt sind. Diese können bei Betrieb extrem heiß werden.