DLE 30 engine is a gasoline engine, suitable for 18×8, 18×10, 19×8, 20×8 inch propellers. The engine has an idle speed of 1600 rpm, a thrust of 8.5 kg/100 meters altitude and 7.5 kg/1800 meters altitude.
This user manual covers the DLE 30 gasoline engine produced by Mile HaoXiang Technology Co., Ltd. It states that the engine is not a toy and that the manufacturer is not responsible for injuries resulting from its use, and it asks users to read the manual carefully before operation.
The manual includes safety instructions, engine specifications, carburetor adjustment guidance, a step-by-step starting procedure, and maintenance notes such as the 30:1 petrol-to-oil ratio, break-in at 4000 rpm for 2 hours, and periodic cleaning of the carburetor fuel screen. This manual is written in Chinese.
| Performance | 3.7HP/8500rpm |
|---|---|
| Idle Speed | 1600 rpm/min |
| Static Thrust | 8.5 Kg at 100 m altitude; 7.5 Kg at 1800 m altitude |
| Propeller Specification | 18×8; 18×10; 19×8; 20×8 |
| Spark Plug | NGK CM6 |
| Displacement | 30.5 cm3 |
| Bore × Stroke | 36 mm × 30 mm |
| Compression Ratio | 7.6:1 |
| Fuel/Oil Mixing Ratio | 30:1 |
| Weight | Main engine 920 g + exhaust pipe 60 g + ignition equipment 120 g |
Use clean 93# petrol mixed with engine oil at a ratio of 30:1, and do not mix different brands of engine oil, as this can seriously block the carburetor.
Break in the engine at 4000 rpm for 2 hours; running at low speed for too long may carbonize the spark plug.
A general starting point is 1.1 turns out for the low speed needle and 1.5 turns out for the high speed needle, then adjust the high needle to peak rpm.
Close the choke, advance the throttle to full position and turn on the ignition, flip the prop until the engine fires and dies, then open the choke, set the throttle slightly above idle and flip the prop again until it starts.