DLE series gasoline-engine is a professional design for the model airplane. With its high power output and light weight, it's ideal for your TOC airplane.
This manual explains safety precautions for the DLE-30 gasoline engine, emphasizing that it is not a toy, that all fasteners must be checked and secured (using Loctite if needed), and that operators must stay clear of the propeller and wear protective eyewear. It also lists the engine’s key specifications such as power output, idle speed, pulling force at different altitudes, propeller compatibility, and recommended spark plug.
Operational sections cover engine adjustment (carburetor needle settings for low‑ and high‑speed mixtures), start‑up procedures (closing the choke, turning on ignition, advancing throttle, and flipping the propeller), and routine maintenance (fuel type, oil‑to‑fuel ratio, cleaning the carburetor screen, and regular inspections). Contact information for the manufacturer is provided at the end of the document. This manual is written in Chinese.
| Power | 3.7 HP @ 8500 rpm |
|---|---|
| Idle Speed | 1600 rpm |
| Pulling Force (100 m altitude) | 8.5 kg |
| Pulling Force (1800 m altitude) | 7.5 kg |
| Propeller Sizes | 18×8, 18×10, 19×8, 20×8 mm |
| Spark Plug | NGK CM6 |
| Displacement | 30.5 cm³ |
| Bore × Stroke | 36 mm × 30 mm |
| Compression Ratio | 7.6 : 1 |
| Lubricating Ratio | 30 : 1 |
| Weight (engine only) | 910 g |
Close the choke, turn on the ignition, advance the throttle to full, then briskly flip the propeller until the engine fires and settles into normal operation.
Use 93‑octane gasoline mixed with engine oil at a ratio of 30 : 1.