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 both ignitions sensors in proper positions 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 ignitions are switched off, the choke valves are closed and the throttle
valves are about half opened. Then give the engine 3-4 turns, provided that carburetors are
not overflowing. If it is overflowing, give the engine 1-2 turns only.
2) Switch the both ignitions on, open the choke valves, 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
valves opened, 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 ignitions off and on again and restart the
engine with throttle turned slightly down and the choke valves 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 plugs are dry then probably
not enough fuel has been drawn into the carburetors. 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.
·
DO NOT PROCESS THE RUNNING-IN AT IDLE SPEED!
·
A COLD ENGINE SHOUL BE WARMED UP BY SHORT
ACCELERATIONS (1-2 SEC)
Problem guide
The engine would not start:
–
check the battery voltage; use the good brand battery only
–
check and or replace the spark plug if needed (check the spark by inserting the
plug into the plug socket and turning the engine. The correct electrode spacing is
0,6 mm.)
–
check the fuel supply
–
turn the engine to check its mechanical condition
–
check whether the carburetors needles are adjusted correctly
–
take the carburetor off and visually examine the condition of the carbon-fiber reed
valve
–
unscrew the carburetor cover on the side of the pressure inlet, check the fuel
screen possibly give the carburetor a blow with a current of air; when
reassembling, make sure you arrange the membrane and gasket in a correct order
–
recheck the pressure hose attached to the carburetor
Replacing the reed valve:
–
unscrew and remove the carburetor (mind the gasket)
–
unscrew four M4 screws on the flange, remove the flange and take off the reed
valve (mind the gasket)
–
unscrew four M2 screws and remove the old valves, replace them with new ones,
screw the screws back in and tighten them gently
–
when reassembling, make sure you fix the gasket correctly
Mechanical faults of the engine must always be commit to a professional service
department!
Service information
After each 20 hours of running or 1 year change the spark plug.
After each 50 hours of operation time preventively check up the con-rod and the reed valve.
After 300 hours of operation time commit the engine to the professional warranty service
department.
Содержание MVVS 190CN4
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