Starting And Turning Off - Vittorazi Motors Moster 185 Classic User Manual

4.3 Starting and turning off

In the first start-up of the engine and every time the gasoline line (tank, pipe, primer
bulb and carburetor) remains without fuel, you will need to fill the circuit before starting
the motor. To do that, it is necessary to make pressure on the primer bulb of the
gasoline and at the same time, with care, on the valve of the carburetor (indicated with
number 6 in the following picture 4.5) up to the filling of the pipeline. It will be easy to
see the gasoline that enters into the carburetor through a transparent pipeline. For a
good starting of the engine, when the circuit is empty or the motor is cold, you need to
enter just a small quantity of gasoline in the carburetor (for about ½ second). This small
quantity of gasoline, will work as starter/choke to the motor. Attention: if the quantity of
gasoline that you push with the pump into the carburetor, is excessive, there is the risks
to flood the motor, and eventually the damage of the pull starter.
The best starting of the Vittorazi motor is gotten without throttle or with a minimum of
throttle opening. If the circuit of fuel is under pressure and the motor is warm, it won't
be necessary to make pressure on the primer bulb and valve.
During the start-up phase, always pay maximum attention to the propeller and to
those who could be nearby. Many accidents happen before to fly. On every test or
warm-up, we suggest to always wear the paramotor on your shoulder, to fasten the
harness, take a look around, then to turn on the engine with the pull (or electric)
starter, always ready, however, to push the shutdown button, in order to stop the
motor in every moment.
Important: often verify that the shutdown button is working. Sometimes it may get
jammed or can stop working by the time.
4.4 Warm-up
Gently get throttle in the first 30 seconds allowing to stabilize the carburetor and the
motor. Now you increase the number of RPM (up to approximately 1/4 of throttle) and
let motor warm-up for 2-3 minutes at this constant speed. Finally get the motor for
some second (15-20) at full throttle. Now your motor is ready to the flight.
If you install a temperature sensor CHT: during the warm-up above described, the motor
has to reach or overcome a temperature of 120°C.
These 3 minutes of warm-up also have to be dedicated, thanks to your attention, to
understand if the motor has some anomalous behavior, if there are unexpected
vibrations or undesired noises.
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