MVVS 50 IRS - Manual

Operating instructions
MVVS 50 IRS No: 3005L/3005S
Version 1.3
Before using the engine, please read these instructions carefully.
Congratulations on choosing the MVVS 50 gas engine.
The MVVS 50 has been designed and manufactured for propeller-powered radio-
controlled model planes. It is able to meet all of your expectations of an acrobatic racing
engine.
Technical specifications
Bore 40 mm RpM range 1000 – 7500 RpM
Stroke 38 mm
Weight of complete
engine without ignition*
1560 g Fuel
Unleaded 95-
octane fuel
Weight of ignition unit 190 g Lubrication
Oil with petrol in
mixture 1:40
* Some manufacturers state the weight of incomplete engines. The value in the table
above stands for the weight of a completely assembled engine, including the spark plug,
carburetor, drive washer and prop screws.
Safety precautions
1) Never use the engine for any manned vehicles.
2) When operating model planes, always follow the rules and laws in effect in your
country.
3) The manufacturer declines all responsibility for all damages arising from the
operation of models and other appliances powered by the MVVS 50 engine.
4) Always use original spare parts.
5) Never tamper with the engine construction.
6) Before each flight always check that all the propeller screws are tightened up and in
good condition. If you use a spinner, check that it is tightened up, too. When
mounting the spinner always follow the assembly instructions.
7) Periodically check that the engine is firmly fixed to the engine mounts. Never start a
loose engine!
8) Always use a balanced propeller! Always replace the propeller when damaged!
9) Make sure that no part of your body intersects the plane of the spinning propeller.
10) Always wear close-fitting, well-fastened clothes when starting or operating the
running engine. Never wear loosely hanging clothes (ties, scarf, etc.).
11) Never try to stop the engine by using any part of your body.
12) Always stop the engine either by turning off the ignition switch or by completely
closing the carburetor throttle valve.
13) Before starting the engine always make sure that the model is safely fixed in place
and cannot start moving.