Vittorazi Motors MOSTER 185 EFI User manual

MOSTER 185 EFI
Installation manual
Release V1/2024.
Valid for MY24 version.

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Contents
1Introduction 4
2Be careful! Read it completely 6
3Installation 8
3.1 Preparing for installation 9
3.2 Supports to the frame 12
3.3 Electrical system 14
3.4 Battery 24
3.5 Display 31
3.6 Fuel system 35
3.7 Throttle bowden cable 43
3.8 Propeller assembling 46
3.9 Final checks 51

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1Introduction
Congratulations and thanks for being a Vittorazi qualified professional.
This manual is intended as a reference point for aircraft manufactures, dealers and professional
people dealing with Vittorazi Motors. Please study this professional manual carefully before
starting the installation activity. The purpose of this manual is to provide all the necessary
information to the professional in order to allow a proper installation of the engine, carried out
autonomously and in total security. The professional manual includes: technical descriptions of
the installation phase and reference values.
All the components of Vittorazi Motors are checked and tested in a process of industrial quality
control before the assembling. Then by sampling the complete motors are checked to assure the
functionality of all the parts through a complete test of twenty minutes on the bench. Note that
the reliability, performance and durability of the engine also strongly depend on the correct
installation of which you are in charge.
In case you need further explanations, you can contact directly the headquarters of Vittorazi
Motors. Please include in the request, the six-digit serial number that identifies the motor (read
3.1 “Preparing for installation”) and a photo of the item in question.
Also take into account the availability of Illustrated Parts Catalogue (IPC), manual updates, service
bulletins, FAQs, other documents in our official website. The video tutorials are available on the
Vittorazi Motors official YouTube channel. Below the links.
IPC, manuals, bulletins, newsletter, warranties, FAQ
https://www.vittorazi.com/en/services/
Vittorazi Official YouTube channel: video and free tutorials available
https://www.youtube.com/user/VITTORAZIMOTORS

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Reading tips:
Attention, warning, danger, risk
Any situation or condition which may result in a serious danger
Recommendation, caution, important advice

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2Be careful! Read it completely
To fly in total safety, you must read the following recommendations:
•This engine is not certified. This engine does not fulfil airworthiness regulations. The
products are dedicated to non-certified aircraft and flying as a recreational or sporting
activity.
•Final-user must be aware that the engine can stop, break or shut down at any time.
Such an event may require an immediate and forced landing in inadequate,
congested or impervious areas, with the possibility in the end of causing the death of
the pilot or other persons involved.
•The aircraft equipped with this engine must be conducted in full compliance with
rules and regulations in force relating to the activity of leisure and sport aviation, with
regard to the country in which the operations are carried out.
•Vittorazi Motors and its distributors decline any direct or indirect responsibility related
to this kind of activity. By using a new engine, the owner agrees that these terms and
conditions have been accepted at the time of purchase of the product.
•The engine is not covered by any liability insurance. The use of the engine
automatically determines the assumption of all risks and personal liability for personal
injury or damage to third parties resulting from the activity.
•Improper use of the products or improper technical service (in relation to the
specifications contained in the user, installation and maintenance manual) will held
harmless the company from any liability for any damage due to the malfunctioning
and immediately void the warranty of the product. So, do not use the motor if it has
not been properly maintained or if it has not been used correctly over time.
•Vittorazi does not assume any responsibility for those engines that are used with parts
that are not original, not approved, modified or that have suffered an improper use.
Use of spare parts not original and not recognized by Vittorazi, can make the engine
dangerous and will void the warranty.
•Unauthorized modifications to the motor, to the reduction, to the propeller can
invalidate the warranty of the motor and can compromise the reliability of the aircraft
and its safety. In case it is necessary to intervene, we invite you to contact an authorized
dealer Vittorazi.
•Some geographical areas, due to particular weather conditions such as pressure,
temperature and humidity can affect the performance of the engine. Before taking
off, test the engine on the ground and make sure it does not behave abnormally.

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•Always start the engine on a flat and clean surface, without stones or sand. During all
phases in which the engine is kept running near the ground (such as heating, take off,
landing) it is necessary to maintain a safe distance from the engine. A good safety
distance is 100 meters in every direction.
The following engine speed limits must be respected to avoid engine failures, to keep
the warranty valid and to have a correct maintenance scheduling according to the
Vittorazi program:
•Do not keep the engine at full revs for more than 60 seconds.
•Do not keep revs higher than 7.000 RPM during long cruising flights or long climbs.
The average power delivered by the engine during a flight should remain below the
indicated threshold. Contact the aircraft manufacturer for further clarification.
The temperature limit of CHT is 208° Celsius. Do not persist above this temperature
threshold, engine overheating and irreversible damage could occur.
When the CHT exceeds 208°C, the ECU system generates a small engine speed reductions
that last a fraction of a second, without compromising the flight dynamics, just to call the
pilot's attention. This safety function disappears when the speed is reduced below 7400 rpm.
Exceeding the EGT limit is shown on the display with the word "Temp" flashing in the top
right corner. Proceed at reduced power and once on the ground contact your dealer.
LiPo batteries are high-tech products but potentially dangerous to property, animals or
people, especially if used improperly or without experience.

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3Installation
This section refers to mechanical and electrical installation, so it is reserved for the aircraft
manufacturer (paramotor, hang glider, ultralight and others) who has qualified personnel in the
mechanical, electrical and aeronautical fields. By following the instructions, it will be possible to
assemble the engine correctly.
Please refer further to the aircraft manual for operation, installation, maintenance. A correct and
safe operation of the same engine, cannot be guaranteed in other applications, than those
approved by the aircraft manufacturer.
Any procedure of installation, maintenance and/or repair of the products must be carried out
exclusively with the original Vittorazi parts and tools specified by Vittorazi, in compliance with the
specifications contained in the user, installation and/or maintenance manual of the products; to
ensure maximum safety and performance of the products, the above-mentioned procedures will
be carried out by mechanics with proven experience in the Ultralight aviation or general aviation
or with experience gained by Vittorazi professional training courses. Failure to do so, will hold
harmless the company from any liability for any damage due to the malfunctioning and
immediately void the warranty of the product.
Vittorazi shall not be liable for any damages deriving from the installation of its motors onto
aircraft and/or equipment that require airworthiness certifications.
Frame design must give strong consideration to the following sections: 3.2 Supports to the frame,
3.3 Electrical system, 3.4 Battery, 3.6 Fuel system. It is also recommended to carry out the checks
described in the relevant paragraph (3.9 Final checks) before starting the engine.

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3.1 Preparing for installation
On delivery of the engine:
•Check that the six-digit engine serial number on the engine casing matches the number
on the packaging box.
Check that there is no damage of any kind related to the transport of the engine.
Engine openings are closed by special plugs to prevent the entry of foreign substances and
moisture. These should only be removed when necessary for installation.

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3.2 Supports to the frame
The engine is fixed to the aircraft frame through the 4 spacers (1) that are connected to the 4
dampers (2). Do not replace the dampers (2), as they are designed and approved for this engine.
Use M8 screws for fixing, taking care not to rotate and damage the rubber part. The vibration
dampers reduce the vibrations transmitted from the engine to the frame. For safety reasons,
straps are fitted around the vibration dampers.
The components to be installed, in particular the fuel tank, fuel hoses and the battery, must
have a certain distance from the exhaust system as high temperatures are reached during
engine operation.

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For safety reasons, the engine has the airbox already fitted. It can be removed if necessary,
during installation. When reinstalling it, check that the airbox has been fitted correctly, and
in particular that the fixing clamp (1) on the sleeve and the safety strap (2) have been securely
fastened.

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3.3 Electrical system
3.3.1 Signal wiring
The signal wiring is composed by the injector signal cable (1), the air rotary valve signal cable
(2), the ground cable (3), the start/stop button cable (4) and the spark coil signal cable (5).
The signal wires are clamped with an M6 F8 rubberized cable clamp (6) and an M6 F8 rubberized
cable clamp (7) that fix the signal cable, an M5 F5 rubberized cable clamp (8) that fix the start/stop
button cable (4) and the coil signal cable (5), an M4x12 screw (9) that fix the ground cable (3) and
an M5 F6 rubberized cable clamp (10) that fix the spark coil signal cable (5).
Signal wiring scheme:
Air rotary valve
Injector
Spark coil
Ground
Stick

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Clamp the start/stop button cable to the throttle bowden cable to block the movement of
the start/stop button cable, due to airflow or vibration, that could lead to stress at the
connector root or loss of connection.
Clamp the throttle bowden cable to the frame to block the movement of the throttle
bowden cable, due to the movement of the throttle, airflow or vibration, that could generate
stress on the bowden cable fixing and the root of the start/stop button cable.
Position the fastening point at least 20 cm away from the throttle bowden fixing support.
Throttle
bowden
cable
Start/Stop
button cable
Frame
Throttle
bowden
cable

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3.3.2 Power supply wirings
The power supply wiring is composed by the ECU supply cable (1), the EGT and CHT probes
cable (2), the starter relay power cable (3).
The power supply wires are clamped with an M5 F6 rubberized cable clamp (4) that fix the ECU
supply cable (1) and the EGT and CHT probes cable (2), a plastic cable clamp (5) that fix the EGT
and CHT probes cable (2) and two plastic cable clamps (6, 7) that fix the starter relay power cable
(3).
Power supply wiring scheme:
Starter relay
EGT sensor
CHT sensor
ECU supply

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3.3.3 Electric starter wiring
The Electric starter wires are clamped with three M6 F8 rubberized cable clamps (1, 2, 3) and a 26-
92 mm plastic cable tie (4).
Electric starter wiring scheme:

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When the battery XT60 connector is connected, the starter wiring is powered, take care not
to cut the cables or create a short circuit.
A 60A fuse (BF1 type) is housed inside the upper battery compartment.
Electric starter:

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Fix the ECU and the starter power cables to the frame, in an appropriate position to facilitate
connection with the battery and to block the movement of the cables, due to airflow or
vibration, that could generate stress on the roots of the cables.
Place the fixing point at about 10 cms from the connectors.
Frame
Supply
cables
Connectors

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Do not fix the connectors to the frame, this could damage the connectors due to vibration,
creating the risk of short-circuiting and/or engine shutdown during flight.