User manual MVVS 80 V1.1 ASSEMBLY EXHAUSTS 3211I

[. . . ] 16) Small objects must be kept at a safe distance from the engine when it is running. 17) Be careful in choosing the location where you wish to start the engine. 19) When starting the engine make sure that bystanders, especially children, are at a safe distance of at least 10 m. Start using the MVVS 58 in model planes only after you have mastered operating smaller models. Fuel Always use unleaded 95-octane petrol mixed in the proportion 40 volume units of petrol to 1 unit of Mobil Racing 2T oil. [. . . ] If you decide to fasten the engine using flexible motor mounts, always choose parts with enough solidity and strength. Make sure to secure the screws against loosening and regularly check that they are tightened up and in good condition. Since air is used to cool the engine, sufficient air circulation under the cowl must be ensured. Never forget about a hot air outlet ­ which must be bigger than the intake. Do not forget that the engine needs oxygen from the air to be able to operate. Caution: intake of warm air from beneath the cowl may cut the engine power output. Note: Attach a hose to the airpressure inlet on the carburetor and terminate it outside the cowl. When mounting the engine in the model use seals to protect all openings and prevent the pollution of the engine's inside with sawdust, residual abrasives etc. Make sure that the inside of the fuselage is clean and that all parts are tighten in place and cannot be sucked inside the engine. Selecting a suitable propeller It is usually the case that propellers of the same dimensions coming from different manufacturers are not the same. Oftentimes not even propellers of the same dimensions produced by a same manufacturer are not the same. The engine power is best utilized when the propeller dynamics curve and engine power curve (revolutions/power output) intersect in the area of the engine top power output. If revolutions do not drop, the engine has been adjusted successfully. If the needles are damaged this way it is no longer possible to adjust the carburetor and it is necessary to exchange it for a new one. Caution!!!The engine must be stopped while you adjust the carburetor in order to prevent injury by the propeller. Never close the choke valve completely when the engine is operating! The choke valve is set to allow minimum air flow only when fully closed, which could cause damage to the intake reed valve. Starting and running in a new engine Before you first start the engine, screw the plug in and tighten it up. Make sure that the plug socket is fitted in place and fastened down properly; pull the wire ring over the hexagon. Fix the ignition sensor in proper position above the magnet with screws enclosed. Unless the spark plug is not inserted in plug socket, never turn the engine with ignition turned on. 1) Make sure that the ignition is switched off, the choke valve is closed and the throttle valve is about half opened. Then give the engine 3-4 turns, provided that carburetor is not overflowing. 2) Switch the ignition on, open the choke valve, 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 valve closed, you do not hear a suggestion of the engine starting, give the engine 2 turns following the instructions in paragraph 1 above. [. . . ] 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 min of operation start opening the throttle at maximum for short periods of time. 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. [. . . ]