Start And Stop - Vittorazi Motors COSMOS 300 User Manual

4.3 Start and stop

To test your aircraft on the ground, you have to be very careful. Carry out a checklist before
starting the engine (chapter 5). Brake the aircraft in such a way that the thrust created by
the rotation of the propeller does not cause any harm to you or other people near you. Shout
CLEAR PROP! You can now start the engine. Be ready to turn off the engine at any time for
safety reasons.
Filling the fuel line. Before starting the engine, the fuel line must be filled. To do this pull the
choke control and hold it. Then simultaneously, activate the electric motor using the start
button or pull the manual starter, until the fuel line is completely full and you hear the first
strokes. Then leave the choke control at the neutral position and activate the start button or
pull the manual starter again.
Cold engine starting. Throttle position at idle or less than 20 % open. In case of a difficult
start, pull the choke control until you hear the first strokes.
Warm engine starting. Throttle position at idle. It is not necessary to refill the fuel line. When
the fuel line is full and the engine is warm, it is not necessary to pull the choke control to
start the engine.
Starting the engine when it is flooded. Full throttle opening. No choke activated. Extremely
dangerous condition when performing this operation. Thrust may be violent and
instantaneous in the event a sudden start.
Cosmos 300 – User manual – V3 19