Polini THOR 303 Notice D'utilisation page 16

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black buttons together and slightly accelerate till the engine runs. Once
it runs switch it off, disconnect the starter by lowing the lever. Start the
engine again slightly accelerating.
If the engine is not equipped with a Polini throttle control please refer
to the instructions of the vehicle's manufacturer to find out the switch
on/off buttons.
! ATTENTION! keep the switch in your hand during all the stages and be
ready to operate it in case of any technical fault. If necessary keep it pressed
till the engine has completely stopped.
Once the engine starts we suggest testing the right functioning of the kill switch
button. After having checked it, start the engine again without accelerating
and without using the starter. Now start the engine and leave it idling, slightly
accelerating it, until it warms up to min. 55° of operating temperature.
3.3- DUAL SPARL ELECTRIC STARTER – IGNITIONS TESTS
Fill the fuel system as indicated in paragraph 3.1.
Thor 303 DUAL SPARK engine has a control console with a cut-out switch
(photo 2)
OFF
TEST 1 START
that must be fixed in a comfortable position and easy to be reached
by the pilot.
The engine has two separated ignitions and the console let you check the
correct working of both the ignitions.
When the ignition is on OFF position the engine is switched off and the
electric starter does not work. By moving the switch to ON position the
led will light.
Use the central black key (START) to start the engine. After having
started the engine keep KEY 1 pressed to disable ignition 1 and it is
possible to check the correct working of ignition 2. The engine must keep
on working. Now release KEY 1.
Repeat the test keeping KEY 2 pressed. It disables ignition 2 and it is
possible to check the correct working of ignition 1. The engine must keep
on working. Now release KEY 2.
Now to end the test press KEY1 and KEY2 simultaneously, so disabling
both the ignitions. The engine now has to stop.
Now start the engine again and it is ready to fly.
NOTE 1: to switch the engine off in standard conditions use the switch
moving the lever in OFF position.
NOTE 2: The secondary electronic ignition works using the battery. This
ignition, if fed, (switch in ON position) has an electric input even with
the engine switched off. This input can discharge the battery in a few
days. It is important to re-position the cut-out switch in OFF position.
(LED switched off)
ENGLISH
ON
LED
TEST 2
NOTE 3: If the battery should be completely discharged it is possible
to use the engine by starting it manually. Keep into consideration that
till the battery does not reach a minimum charge level the engine will
work with one ignition only.
4- RUNNING IN
Run your engine in as instructed below to ensure that the engine and
transmission bed in correctly and to ensure continuous reliability in
future. Once the engine starts, leave it idling until it warms up to normal
temperature. We suggest running the engine 15 minutes at medium-low
engine power output gently accelerating and with different intensity.
Now we suggest checking the correct idling calibration.
During the first flights or for the first 20 litres of petrol we suggest not
keeping the engine at the maximum rpm for too much time, considering
that the 2-stroke engine doesn't stand to the constant rpm even if of
medium power. We suggest varying the engine rpm. Check the carbure-
tion after the first flight. Repeat the running in every time you change
one of the following parts: piston, piston rings, cylinder, crankshaft or
main bearings.
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5- ENGINE SWITCHING OFF
Per spegnere il motore azionare l'apposito pulsante fino a completo
spegnimento.
Se il motore è equipaggiato con il comando acceleratore Polini il tasto
di spegnimento è di colore rosso ed è situato nella zona superiore; in
caso contrario fare riferimento alle istruzioni del costruttore del telaio/
acceleratore per l'individuazione del pulsante di spegnimento.
Per il THOR 303 DUAL SPARK azionare la leva della consolle di comando
in posizione OFF per disattivare entrambe le accensioni contemporane-
amente e spegnere il motore.
6- CARBURETION CHECK
The carburetion setting must be executed by professional people only.
It is possible to make a fast analysis of the carburetion by checking the
spark plug colour. To do it, switch the engine off after having run it for
some second under charge.
Remove the spark plug unscrewing it with the proper tool and verify
the colour of the porcelain that must be of light-brown colour with
tendency to dark. A light colour of the spark plug electrode means a
lean carburetion; if you use the engine in this conditions may cause the
engine failure. Do not use the engine in these conditions and apply to
an authorized retailer to set it up.
7- CLEANING
Clean the engine when it is switched off and cold to avoid burns. Clean
the engine with a soft cloth soaked with neutral cleansing and non-
aggressive.
! WARNING: Do not use acids that may damage the engine.
! WARNING! solvents may damage the engines, the painting and
the rubber parts.
8- CARRIAGE
! ATTENTION: Carry the engine only when it is cold.
Follow the frame manufacturer's instructions for its carriage and how to