MVVS 80 IRS - Manual (Page 5)

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 and possibly replace the spark plug (check the spark by inserting the plug into the
plug socket and turning the engine)
- check the fuel feed
- turn the engine to check its mechanical condition
- check whether the carburetor nozzles 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
At the latest after 200 hours let the engine check by authorized service.
After each 20 hours of running change the spark plug and check the read valve.
After each 40 hours of operation time preventively exchange the read valve for new and
check the crankshaft bearings, connecting rod, check how much is used the piston and piston
ring. If needed change parts or commit the engine to authorized service.
After each 3 running hours or every 15
th flight do
lubricate the front bearing. The new engine lubricate
EARLIEST after first 10 running hours!
Lubrication the engine´s front bearing:
Inject 1.5ml of oil for engines to the hole as in the picture.
During the lubrication DO NOT turn with the propeller!
NOTE! After the bearing lubrication the engine can produce more smoke!
Do not forget to apply the screw-cap into the hole. Running engine without can cause
engine´s damage!!!