User manual MVVS 58 IRS V1.2

[. . . ] Operating instructions MVVS 58 IRS / LC #3002 Before using the engine, please read these instructions carefully. Congratulations on choosing the gas engine MVVS 58 liquid cooled (LC). MVVS 58 LC has been designed and manufactured for propeller-powered radio-controlled model planes especially for those where is air cooling complicated. Technical specifications 8, 5 HP / 6950 RpM 8, 8 N/m / 6600 RpM Unleaded fuel 1830 g Fuel 95 octane Oil with petrol in Weight of ignition unit 165 g Lubrication mixture 1:40 RpM range 1000 ­ 7500 RpM * 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. ** Power output varies with the exhaust used. [. . . ] Always ensure that hoses have enough space and do not fold. Hoses have to stay clear from sharp cants. Mount cooler as not to be affected by vibrations. Place the cooler to be as perpendicular as possible to fly direction. Gradient of slope 30°does not affect cooling system work. Gradient of 40° slightly reduce work of cooler, but gradient more than that cause that cooling system is not working properly. Please note that cooler will work only if air goes thru. That's why there always has to be enough space behind the cooler for outlet. Filling gap should be placed at the highest place when the scale is on the ground. Than it is possible to check water level. Carburetor adjustment Basic setting: (The values are derived from the position of clock-hands) - adjusting needle (L) for low revolutions range 1turn and 45 min - adjusting needle (H) for high revolutions range 1 turn and 10 min The new engine comes adjusted to the basic setting. This setting should be kept during running the engine in!Air pressure inlet - Adjusting needle (H) Adjusting needle (L) Filling and venting cooling system: Put you aircraft on its undercarriage, unscrew the filling lid and pour water in it. Get off both hoses from the pump and when water starts to come out put them back on the pump. Raise the air model up so the engine is at the highest position and shake slightly. Place the aircraft back on ground and put off and quickly back hoses going to pump. Fulfill water level, start the engine and leave it running for about 1minute. While the engine is idling still refill water. Shut down the engine and close filling lid. In first 30 minutes stop the engine after every 5 minutes and check water level and fill it if needed. Choke lever Operation recommendation: Always check coolers temperature while first starts. Temperature should be between 45 ­ 80°C (113 ­ 176F). The best operation temperature is 60°C (140F). By size of cooling space you can manage keeping recommended temperature. [. . . ] 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!Having started the engine, leave it running for approx. [. . . ]