User manual for the DLE 35HD water‑cooled engine, covering installation, operation, maintenance and safety.
The DLE 35HD is a single‑cylinder water‑cooled engine designed for UAV power. The manual provides detailed safety precautions, wiring instructions, and required battery specifications before starting the engine.
It also describes the engine’s specifications, cooling system, start‑up procedure using a PWM signal, carburetor adjustments for altitude, regular maintenance tasks, and troubleshooting of common faults. This manual is written in Chinese.
| Engine type | Single‑cylinder water‑cooled |
|---|---|
| Displacement | 35 cm³ |
| Output voltage | DC 50 V |
| Power (HP) | 3.5 HP @ 8 500 rpm |
| Power (kW) | 2.5 kW (sea level) |
| Idle speed | 5 000–6 000 rpm |
| Water‑proof rating | IP43 |
| Engine weight | 3.3 kg |
| Cooling system weight | 2 kg (incl. 800 ml coolant) |
| Ignition type | 12 V CDi DC ignition, 4 W |
| Start method | PWM signal (1100‑1900 µs) |
| Recommended coolant brands | Baishitong, Boshi |
Apply a PWM start signal to the engine input; the pulse width should be between 1100 µs and 1900 µs (typically 1100‑1700 µs).
The manual recommends using Baishitong or Boshi brand coolant.
The engine idles between 5 000 and 6 000 rpm.
Connect a 50 V (12S Li‑battery) power source and follow the wiring diagram exactly.