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ENGLISH
3.2- ELECTRIC STARTER
Fill the fuel system in as shown in the previous paragraph.
To start the engine pull upwards the black lever placed in the upper side
of the carburettor (photo 1).
If your engine is equipped with a Polini throttle control press the two
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.
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.
5- ENGINE SWITCHING OFF
Switch the engine off by pressing the button till the complete stop.
If the engine is equipped with the Polini throttle control the switch off
button is of red colour and you find it in the upper side; otherwise refer
to the frame/throttle’s manufacturer to find out the switch off button.
6- CARBURETION
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
use the fuel tank during its carriage. Be careful of the petrol during the
carriage: its leaking may cause a fire.
! ATTENTION: During the carriage of the engine it is strictly recom-
mended to maintain the propeller locked together with its nut in order
to avoid that the flange thread that sticks out may be damaged or in
case of fall it might break the crankshaft.
The carburetor has a breather pipe studied to carry the engine when
lying. To empty the carburettor unscrew half turn the breather brass nut
(highlighted in photo 3 with an arrow) and wait till all the fuel enters
the tank. Tighten the brass connection again. Now the carburettor is
empty and you can lay the engine ready to be carried.
! ATTENTION: never unscrew more than half a turn the breather nut
to avoid damaging the OR seal. Never tight too hard.
03
9- ORDINARY SERVICING
! ATTENTION: THE SERVICING OPERATIONS MUST BE DONE
BY QUALIFIED PEOPLE ONLY. IF THE INSTRUCTIONS MENTIO-
NED BELOW WILL RESULT NOT CLEAR, WE SUGGEST ASKING
FOR SPECIALISTS BY POLINI MOTORI RETAILERS OR WHOLE-
SALERS. FOLLOW CAREFULLY WHAT DESCRIBED BELOW.
Maintenances and servicing necessary for the best set up of your engine
should be done regularly, or on all occasions before you start your en-
gine. All the tasks and adjustments described below can be done easily
by following the instructions given in this manual. Refer to your POLINI
MOTORI dealer for scheduled services and repairs, and insist that only
original spare parts are used to replace worn or broken components.
Refer to the servicing tables in sections 12 below for the frequency with
which the various servicing operations must be performed.
9.1- AIR FILTER CHANGE AND CLEANING
Dirty air filter is one of the most common causes of poor engine performance.
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