1. Introduction
This manual provides detailed instructions for the safe operation, setup, and maintenance of your Wltoys K150 AS350 RC Helicopter. The K150 is a highly simulated 4-channel, three-propeller aileron-free helicopter designed for both indoor and outdoor use, featuring stable flight characteristics suitable for various skill levels.
2. Safety Precautions
- Age Restriction: Not suitable for children under 14 years. Adult supervision is recommended for younger operators (14+).
- Flight Environment: Operate in open areas, away from people, animals, buildings, and power lines. Avoid flying in strong winds.
- Battery Safety:
- Use only the provided USB charger.
- Do not overcharge or over-discharge the battery.
- Do not expose batteries to extreme temperatures or direct sunlight.
- If the battery is damaged or swollen, discontinue use immediately.
- Propeller Safety: Keep hands, face, and loose clothing away from rotating propellers.
- Water Exposure: Avoid contact with water or moisture to prevent damage to electronic components.
- Maintenance: Regularly inspect the helicopter for any damage or loose parts before each flight.
3. Package Contents
Ensure all items listed below are present in your package:
- Wltoys K150 AS350 RC Helicopter x 1
- Remote Controller x 1
- Operating Instructions Manual x 1
- USB Charger x 1
- Spare Blades x 3
- Main Gear x 1
- 3.7V 500mAh 20C Li-ion Battery x 1
- Screwdriver x 1
- Allen Key x 1
- Apron (Landing Pad) x 1
4. Specifications
| Feature | Detail |
|---|---|
| Product Name | 4-channel 3-blade coaxial helicopter (AS350 Little Squirrel) |
| Product Code | K150 (Air Pressure Constant Height + Optical Flow) |
| Material | Engineering Composite Material, Plastic, Metal |
| Rotor Diameter | 244mm |
| Fuselage Length | 275mm |
| Height | 77mm |
| Product Weight | 90g (including battery) |
| Recommended Age | 14+ years |
| Control Channels | 4 channels |
| Main Motor | Brushless 1106 11200KV |
| Tail Motor | Hollow Cup 8520 |
| Helicopter Battery | 3.7V 500mAh 20C High-Voltage Li-ion (with protective plate) |
| Remote Control Battery | 6 x AA batteries (not included) |
| Flight Time | Approx. 6 minutes |
| Charging Time | Approx. 80 minutes |
| Remote Control Mode | 2.4G |
| Remote Control Distance | 80m |
| Gyroscope | 6-axis gyroscope |
| Flight Features | Air pressure height setting, Optical flow positioning, One-button take-off/landing, 6G mode, Signal loss and crash prevention |
| Certification | CE |
| State of Assembly | Ready-to-Go |
| Indoor/Outdoor Use | Indoor-Outdoor |
| Operator Skill Level | Beginner, Intermediate, Expert |
5. Setup
5.1. Charging the Helicopter Battery
- Connect the provided USB charger to a USB power source (e.g., computer, USB wall adapter).
- Connect the helicopter's 3.7V 500mAh Li-ion battery to the USB charger.
- The charging indicator on the USB charger will show the charging status. Refer to the charger's specific instructions for light indications.
- Charging typically takes approximately 80 minutes. Do not leave unattended during charging.
- Once fully charged, disconnect the battery from the charger.
5.2. Installing Remote Controller Batteries
- Open the battery compartment on the back of the remote controller.
- Insert 6 AA batteries (not included) into the compartment, ensuring correct polarity (+/-).
- Close the battery compartment securely.
5.3. Powering On and Pairing
- Place the helicopter on a flat, level surface.
- Turn on the helicopter's power switch. The helicopter's lights will flash.
- Turn on the remote controller's power switch (Press and hold the right side button to power on). The remote controller's indicator light will flash.
- Push the throttle/direction rocker (left joystick) all the way up, then pull it all the way down.
- The helicopter and remote controller lights will become solid, indicating successful pairing.
6. Operating Instructions
6.1. Remote Controller Overview
- Power Switch: Turns the remote controller on/off.
- Power Indicator: Shows remote controller power status.
- Speed Conversion: Adjusts flight speed (e.g., beginner, intermediate, expert).
- One-Tap Takeoff / One-Tap Landing: Initiates automatic takeoff or landing.
- Optical Flow Switch: Activates/deactivates optical flow positioning for enhanced stability.
- Throttle/Direction Rocker (Left Joystick): Controls altitude (up/down) and yaw (left/right rotation).
- Left/Right / Forward/Back Joystick (Right Joystick): Controls forward/backward movement and left/right side flying.
- Front/Back Fine-tuning Button: Adjusts forward/backward trim.
- Left and Right Fine Adjustment Keys: Adjusts left/right trim.
- Press and hold the right side to power on, Switch between left and right hands: Power on button, also used to switch controller mode (MODE1/MODE2).
- Antenna: Transmits control signals.
6.2. Basic Flight Controls
- Takeoff: Press the "One-Tap Takeoff" button (4) or slowly push the Throttle/Direction Rocker (6) upwards.
- Landing: Press the "One-Tap Landing" button (4) or slowly pull the Throttle/Direction Rocker (6) downwards.
- Ascend/Descend: Push the Throttle/Direction Rocker (6) up to ascend, pull down to descend.
- Forward/Backward: Push the Left/Right / Forward/Back Joystick (7) up to fly forward, pull down to fly backward.
- Turn Left/Right (Yaw): Push the Throttle/Direction Rocker (6) left to rotate left, right to rotate right.
- Side Fly Left/Right: Push the Left/Right / Forward/Back Joystick (7) left to fly left, right to fly right.
6.3. Advanced Flight Features
- 6G Mode: The helicopter utilizes a 6-axis gyroscope for stable flight, making it particularly suitable for beginners. This mode helps maintain stability and makes control easier.
- Air Pressure Height Setting: This feature allows the helicopter to maintain a stable altitude automatically, reducing the need for constant throttle adjustments.
- Optical Flow Positioning: Activate the Optical Flow Switch (5) for enhanced stability, especially in indoor environments or when precise hovering is desired. This feature helps the helicopter maintain its position.
- Signal Loss and Crash Prevention: If the remote control signal is lost (either indoors or outdoors), the helicopter will maintain its current altitude for 2 seconds and then slowly descend to land. During this descent, if the remote control is reconnected (by restarting the remote and moving the throttle rocker), you can regain control.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the helicopter. Do not use water or solvents.
- Propeller Inspection: Regularly check propellers for damage (cracks, bends). Replace damaged blades immediately using the provided spare blades and screwdriver.
- Motor Care: Keep motors free from dust and debris. Avoid prolonged operation at maximum throttle to prevent overheating.
- Battery Storage: For long-term storage, charge the Li-ion battery to about 50% and store it in a cool, dry place. Remove AA batteries from the remote controller when not in use for extended periods.
- General Inspection: Periodically check all screws and connections to ensure they are secure.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Helicopter does not respond to remote control. | Not paired, low battery (helicopter or remote), remote control out of range. | Ensure proper pairing (Section 5.3). Charge helicopter battery. Replace remote control batteries. Ensure helicopter is within 80m range. |
| Helicopter flies erratically or is unstable. | Damaged propellers, incorrect trim settings, strong wind, gyroscope calibration issue. | Check and replace damaged propellers. Adjust trim settings (Section 6.1). Fly in calm conditions. Re-calibrate gyroscope (refer to manual for specific steps if available, otherwise power cycle). |
| Helicopter does not take off or has weak lift. | Low helicopter battery, damaged motors/gears, propellers installed incorrectly. | Charge helicopter battery fully. Inspect motors and gears for damage. Ensure propellers are installed correctly and not obstructed. |
| Remote control indicator light flashes continuously. | Low remote control battery, not paired with helicopter. | Replace AA batteries in the remote control. Perform pairing procedure (Section 5.3). |
9. User Tips
- Practice in 6G Mode: For beginners, start flying in 6G mode to benefit from the enhanced stability provided by the 6-axis gyroscope.
- Indoor Practice: Begin practicing in a spacious indoor area before attempting outdoor flights, especially to get accustomed to the controls.
- Check Weather: Always check wind conditions before flying outdoors. Even moderate wind can significantly affect control and stability.
- Battery Management: Avoid completely draining the helicopter battery during flight. Land the helicopter when you notice a decrease in power or responsiveness to prolong battery life.
- Learn Trim Adjustments: Familiarize yourself with the fine-tuning buttons on the remote control to correct any unwanted drift during flight.
10. Warranty and Support
For any issues or questions not covered in this manual, please contact the retailer or manufacturer's customer support. Keep your purchase receipt as proof of purchase for warranty claims.
Disclaimer: The manufacturer and seller are not responsible for damages or injuries resulting from improper use, modification, or failure to follow the instructions in this manual.