Engine User Manual DLE – 20
Contents
1. Engine Start Close the choke and turn on the ignition Advance the throttle to the full position Flip the prop until the engine fires and dies It may take a few more flips if it is the initial engine start 3 Open the choke advance the throttle to just above idle flip the prop until it starts Maintenance Engine Use standard or premium unleaded Break in engine for 2 hours at half throttle M Check fuel system for air leaks when running U S CT anu a Keep the engines exterior clean and inspected regularly Keep fuel filter clean Remove and inspect reed valve every 6 months Du PPUVDDH DLE Engines are made by Mile HaoXianG Model Technology Co Ltd DLE 20 Caution Read Manual carefully before operation Serious injury may result from improper use USER Manual Carburetor Adjustment DLE series engines are a professionally designed engine for model aircraft With its high power output and light weight its ideal for your model aircraft Read and Every engine has been adjusted to average mixture settings which will most likely follow all of the instructions before you use your engine 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 S afety Instru cti ons settings will need to be adjusted to obtain optimum performance 1 Engines are not a toy Serious injuries may result from improper use W2. e are not responsible for any injury damage or other loss resulting from its use 2 Before every use check the engine assembly propeller and airframe carefully for loose screws and nuts Loctite is strongly recommended on all screws 3 During the break in process the engine must be mounted on a shock absorbing mount or in a model aircraft 4 Always stand clear of and behind of 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 Anyone near the engine should wear protective eye ware Do not wear loose clothing near the engine or propeller Specifications 2 1 1 Performance 2 5HP at 9000 RPM Idle speed 1700 1 Choke lever Static thrust at 100m altitude 6 3 Kg 3 Throftlelevet Static thrust at 1800m altitude 5 6 Kg 3 Idle speed adjustment screw Recommended Props 14x10 15x8 16x6 16x8 17x6 4 Low speed adjustment screw Spark Plug CM6 or equivalent 5 High speed adjustment screw 2 Parameters Carburetor Adjustment Exhaust Amount 20cm A general starting point is 1 1 turns out for the low speed needle and 1 5 turns out for the Piston Diameter x Stroke 32mm x 25mm high speed needle Adjust the high speed needle for peak RPM If the engine slows or dies Compression ratio 10 5 1 while at full throttle the high speed mixture is likely too lean Adjust the low needle until Ratio of lubricating oil Mineral based oil 32 1 you ach
3. ieve a smooth idle and a reliable transition to high speed If the engine dies when the Synthetic Oil between 32 1 and 50 1 throttle is advanced the mixture is likely to lean If the engine stumbles when the throttle is Weight Engine 650g advanced the mixture is likely to rich Exhaust 50g Ignition 120g Caution Do not be tempted to run an overly rich mixture A rich mixture will only result in poor engine performance Premature carbon build up a fouled plug and excessive exhaust residue However a lean mixture will also damage the cylinder and piston
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