[. . . ] We are not responsible for any injury, damage or other loss resulting from its use. 2 LOCTITTE 242 Before every use, check the engine assembly, propeller and airframe carefully for loose screws and nuts. [. . . ] 2 LOCTITTE 242 Before every use, check the engine assembly, propeller and airframe carefully for loose screws and nuts. 3 During the break-in process, engine must running with shock absorber installed. 4 Always stand clear of and behind the propeller; never allow anyone including yourself, to be in front of or to the sides of the propeller when starting or running the engine. Every engine has been adjusted to average mixture settings which will most likely allow the engine to start and run in most locations. However, as altitudes and barometric pressures vary by location, it is very likely that the carburetor mixture settings will need to be adjusted to obtain optimum performance. If ever the engine slows or dies while at full throttle, the high speed mixture is likely too lean. 3, Step 3: Open the choke and briskly flip the prop through compression, advance the throttle to very slightly above the idle position, the engine should start in just a few flips. 4 Step 4: pen the choke, advance the throttle to very slightly above the idle position, turn on the ignition and briskly flip the prop through compression. The ratio of petrol and engine oil is 30:1 Do not mixed up different brand of engine oil, carburetor could be seriously blocked 23000 rpm/min. 3 Always check the tube at fuel system, make sure there is no air leaking. 4DLE8# The exterior of the engine should be kept clean and inspected regularly. Please use DLE#8 spark plug, or engine could seriously damaged because of carbon buildup and overheat. [. . . ] 4DLE8# The exterior of the engine should be kept clean and inspected regularly. Please use DLE#8 spark plug, or engine could seriously damaged because of carbon buildup and overheat. [. . . ]