The running-in period has been determined to be 2 hours. The engine is fully
functional after this period of time.
6. Installation of the engine
Use 4 apertures in the rear lid to install the engine. Use bolts M5.
Accessories of the engine contains 4 pieces of spacing columns in order to distance
the engine from the installation plate.
All 4 bolts have to be used for safe operation.
7. First starting of the engine
Fasten the engine into the model or on a test stand by means of 4 bolts. Connect
ignition and prepare a battery of voltage equal to 4.8 - 9 V and minimum capacity
equal to 1500 mAh. Connect the supply of fuel mixture. Close the inlet to carburetter
with the choke valve. Suck the fuel mixture by rotation of propeller in the same
direction as working revolutions (turn 5 up to 6 times). Return the choke valve to zero
position. Turn on the ignition and put the engine into operation by swift movement -
cranking the propeller up.
If the engine does not get started after about 5 attempts, repeat the whole course of
starting the engine again.
Note:
The ignition is equipped with a device for automatic turning off due to safety
reasons. This situation will happen, if the engine is at a standstill for more than
1 minute.
The ignition is put into operation by turning it off and on again.
8. Maintenance of the engine
The engine is constructed in order to minimize its maintenance. Valve-tappet
clearance has to be checked after 3 hours of operation and valve-tappets have to be
lubricated. Spark plugs and battery for ignition should also be checked.
8.1. Valve clearance adjustment
The valve clearance is determined by the manufacturer to 0.1 mm when the engine is
cold. It is adjusted by means of the supplied gauge and adjustment spanners.
Remove the valve cover before adjustment.
Procedure: loosen the nut, place the gauge between the lifting rod and the tappet,
adjust the clearance by gradual screwing in such a way so that the gauge rubs
slightly. Tighten the nut after adjustment. Position of tools is shown on the figure
number 1, 2, 3. Check the clearance again after the adjustment is finished.
No. 1
No. 2
No. 3
8.2. Lubrication of tappets
Lubrication should be performed at the same time with valve clearance adjustment.
Recommended oil
MOTUL Chain lube Off road
or similar oil for lubricating of
