Starting and running a new engine in
Before you first start the engine, screw the plug in and tighten it up. Follow the instructions
on the box of the spark plug. Make sure that the plug socket is fitted in place and fastened
down properly; pull the wire ring over the hexagon.
Fix the ignition sensor in proper position above the magnet with screws enclosed.
Unless the spark plug is not inserted in plug socket, never turn the engine with ignition
turned on. This could lead to ignition damage!
1) Make sure that the ignition is switched off, the choke valve is closed and the throttle
valve is about half opened. Then give the engine 3-4 turns, provided that carburetor is not
overflowing. If it is overflowing, give the engine 1-2 turns only.
2) Switch the ignition on, open the choke valve, set the throttle at slightly higher idle speed
and give the engine a few quickly turns. If even after the fourth turn, with the choke valve
closed, you do not hear a suggestion of the engine starting, give the engine 2 turns following
the instructions in paragraph 1 above. Then proceed according to instructions given in
paragraph 2.
3) If the engine does not start even after another set of turns open the throttle to maximum
and give the engine approx. 4 turns. Switch the ignition off and on again and restart the
engine with throttle turned slightly down and the choke valve set open.
4) If the engine still would not start, unscrew the plug and check its contacts. Clean any
possible petrol moisture (i.e. an indication of engine overflow) and screw it in again. Further
starting should only be done with the throttle turned down. If the plug is dry then probably
not enough fuel has been drawn into the carburetor. If that is the case, check the fuel feed
and then return to the instructions given in paragraph 1.
If the engine starts to run backwards do not open the throttle - stop the engine
immediately! Otherwise the engine could be damaged!
While the engine has been started, leave it run for approx. 5 min at a higher idle speed. Then
run it in for approx. 20 min, while changing revolutions from idle to 1/2-3/4 of the range and
shortly holding each position - gradually prolong the holding periods. After 10 minutes
running, start opening the throttle at maximum for short periods of time. Stop the engine and
let it cool down. Then restart it and check the adjustment. If everything is all right, you can
first take off. During first few flights do not overload the engine and do not let it run at high
revolutions for long periods of time (very important at hot weather). Use up all fuel that was
produced as a mixture with the oil that is included in the package. From now on, fuel and oil
should be mixed in the proportion 40:1.
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DO NOT PROCESS THE RUNNING-IN AT IDLE SPEED!
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A COLD ENGINE SHOUL BE WARMED UP BY SHORT
ACCELERATIONS (1-2 SEC)