Instruction Manual for JIKEFUN BM31 F22 Brushless RC Fighter

1. Safety Precautions

Before operating this remote-controlled aircraft, please be aware of the following safety guidelines:

• Warning: Improper operation due to ignoring these instructions may cause property damage or serious injury.
• Caution: Improper operation due to ignoring these instructions may be dangerous.
• Prohibition: Do not attempt to operate in any prohibited environment.

Important Safety Statements:

• This model aircraft is not a toy and poses certain hazards. Operate it according to safety precautions and instructions.
• Random modification, disassembly, improper use, or unfamiliarity with the product may cause unexpected dangers.
• The manufacturer is not liable for accidents caused by abnormal wear and tear, improper assembly, or operation in unsafe environments.
• This product is suitable for individuals aged 14 and above.
• Model products are high-skill and consumable goods. Parts may wear out after disassembly, assembly, and use.

Environmental Considerations:

• Prohibition: For indoor and outdoor use only; keep away from obstacles.
• Choose obstacle-free indoor or outdoor sites. Maintain a proper distance from people, pets, heat sources, electric wires, and power supplies.
• Prohibition: Keep away from humid environments.
• The aircraft contains precise electronic components. Avoid use in bathrooms or on rainy days to prevent moisture damage.
• Prohibition: Do not use the product improperly.
• Do not disassemble or modify the product at will. Use only parts listed in this product catalog for upgrades, modifications, or maintenance.

Battery Safety Instructions:

Ni-MH Batteries:

• Confirm positive and negative polarity during installation.
• Do not mix old and new batteries.
• Remove batteries if the product is not used for a long time.
• Dispose of used batteries according to local regulations.

Li-Po Batteries (3.7V Lithium Battery):

Li-Po batteries are more dangerous than other types. Please read and follow these precautions:

• Prohibition: Use only chargers provided by the original manufacturer to avoid explosion or fire.
• Do not impact, disassemble, reverse polarity, or incinerate the battery.
• Prevent metal objects from touching both terminals to avoid short circuits.
• Keep sharp objects from piercing the battery.
• Charge carefully and always keep the battery within your sight. Keep it out of reach of children.
• Do not charge the battery if it becomes hot after use.
• Dispose of used batteries strictly in accordance with local waste disposal regulations.

Caution: Keep away from heat sources. Most remote-controlled aircraft are made of EPP foam and electronic components, which can deform or melt at high temperatures.

Warning: Avoid solo operation. This product is intended for users aged 14 and above. Beginners are recommended to practice with a flight simulator before actual flight.

2. Product Specifications

3. Package Contents

The standard package includes the following items:

4. Setup

4.1. Pre-flight Preparation

1. Battery Charging: Fully charge the 3.7V Li-Po battery using the provided USB charging cable. The red light on the charger will turn off when charging is complete. Charging time is approximately 100 minutes.
2. Install Vertical Stabilizers: Install the left and right vertical stabilizers into their corresponding positions (A/B) on the aircraft.
3. Install Landing Gear: Install the front and rear landing gear into the grooves at the bottom of the fuselage. Ensure correct direction as shown in the diagram to allow for proper takeoff.
4. Connect Aircraft Battery: Unscrew and remove the battery cover. Connect the 3.7V Li-Po battery to the circuit board socket, matching red to red and black to black. Do not force reverse connection, as this will damage the main board.
5. Secure Battery Cover: Secure the battery cover with screws.
6. Install Transmitter Batteries: Install 4 pieces of 1.5V AA batteries into the transmitter (not included). Ensure correct polarity.

4.2. Lithium Battery Charging Instructions

Plug the USB charger into a power source. The red light turns off during charging, and the USB indicator light stays red. When fully charged, the red light turns off. Charging time is approximately 100 minutes.

• Ensure charger voltage and plug comply with local standards.
• If the charging plug overheats, stop charging immediately.
• Do not leave unattended while charging.
• Use only the provided USB charging method for the lithium battery to avoid explosion hazards.
• After flying, allow the battery to cool for about 30 minutes before recharging.
• Do not dispose of the battery in fire or short-circuit its terminals.

4.3. Remote Control Battery Installation

Open the battery cover on the back of the remote control. Insert 4 AA alkaline batteries correctly according to the polarity markings inside the battery compartment. (Batteries are not included).

4.4. Aircraft Control Surface Adjustment

To adjust the control surfaces:

1. Connect the battery to the aircraft and turn on the aircraft power.
2. The elevator control surface of the tail wing should be centered. If not, manually rotate the connector to adjust it.
3. Ensure the servo being adjusted is not moved and the gyroscope is turned off.
4. Rotating the connector clockwise shortens the push-pull steel wire; counter-clockwise lengthens it.
5. Trim buttons on the remote control can also be used for fine adjustment.

4.5. Binding Between Remote Control and Aircraft

1. Flight Binding:
   a. Connect the battery to the aircraft. The red indicator light of the aircraft receiver will flash.
   b. Ensure the throttle stick is at the lowest position, then turn the remote control switch to ON. The remote control will beep twice, and its power indicator light will flash.
   c. Push the throttle stick to the highest position and then pull it back to the lowest. The remote control will beep once, and both indicator lights will stay on, indicating successful binding.
   d. If binding fails, disconnect aircraft power and turn off the remote control, then repeat.
2. Trim Data Reset:
   a. Place the bound aircraft level on the ground, with the tail facing you and the nose forward.
   b. Push the left and right sticks to the bottom-right and bottom-left corners simultaneously (V-shape inward). The lights on the aircraft and remote control will flash and then stay on, indicating trim reset is successful.
   c. Push the throttle stick upward to start the motor; the aircraft is now ready for flight.

4.6. Aircraft Gyroscope Calibration (Restore Factory Settings)

1. Connect the battery to the aircraft and place it horizontally on the ground or a flat surface. The aircraft light will flash slowly.
2. Turn on the remote control and complete binding; the aircraft light will stay on.
3. Push the remote control sticks to the bottom-left and bottom-right corners simultaneously (outward V-shape) and hold for 5 seconds. The lights of the remote control and aircraft will change from steady on to fast flashing, then back to steady on, indicating calibration is successful.

5. Operating Instructions

5.1. Flight Modes

The F22 Raptor supports multiple flight modes for various skill levels:

• Vertical Mode: Allows for hovering flight, similar to F3D maneuvers, suitable for indoor or light outdoor wind conditions.
• 6G Self-stabilizing Level Flight Mode: Stabilized by a 6-axis gyroscope, this mode is ideal for beginners. Releasing control sticks returns the aircraft to level flight.
• 3D Locked Level Flight Mode: For advanced stunts. Releasing the remote control maintains the current flight attitude.

5.2. Takeoff Methods

The aircraft offers two takeoff methods:

1. Ground Taxiing Takeoff:
   a. Place the aircraft on a flat surface, ensuring all control surfaces are centered.
   b. Set the flight mode switch on the remote control to the 6G position.
   c. Push the throttle to 100% for taxiing speed, then operate the elevator stick to lift the aircraft off the ground.
2. Hand-Launch Takeoff:
   a. Double-check that all control surfaces are centered.
   b. Hold the bottom rear of the aircraft with your right hand.
   c. Set the flight mode switch on the remote control to the 6G position.
   d. Push the throttle to 100%, then release your hand. Use the elevator stick for better control.

5.3. 6G Level Flight Mode Operation

In 6G mode, the 6-axis gyroscope provides stability, making it easier for beginners to control.

• Throttle Operation:
      To climb: Push the left throttle stick upward, then the right direction stick downward.
      To descend: Push the left throttle stick downward, then the right direction stick upward.
• Motor Steering Operation:
      To turn left: Push the left direction stick to the left.
      To turn right: Push the left direction stick to the right.
• Aileron Steering Operation:
      To roll left: Push the right direction stick to the left.
      To roll right: Push the right direction stick to the right.
• Elevator Operation:
      To climb: Push the right direction stick downward.
      To land: Push the right direction stick upward.
• 6G Mode Roll Maneuvers: While in flight, press the left roll button once. Move the right control stick left or right to perform a roll.

5.4. 3D Mode Stunt Operation

3D mode allows for more advanced maneuvers. Proficiency is required before attempting these stunts.

• Throttle Operation: Similar to 6G mode for ascending and descending.
• Motor Steering Operation: Similar to 6G mode for turning left and right.
• 3D Roll Stunt Operation:
      Left Roll: Push the left throttle upward to control altitude. Push the right direction stick to the left (fully moved to 100%).
      Right Roll: Push the left throttle upward to control altitude. Push the right direction stick to the right (fully moved to 100%).
      Back Flip: Push the left throttle upward to control altitude. Pull the right control stick downward to make the aircraft flip backward.
      Front Flip: Push the left throttle upward to control altitude. Push the right control stick upward to make the aircraft flip forward.

5.5. One-Key Inverted Flight Function

While in flight, press the one-touch reverse button to flip the aircraft 180 degrees and fly in reverse. Press again to return to normal flight.

6. Maintenance

• Battery Removal: When you finish flying, safely remove the model aircraft's battery. This is a habit to avoid any unfortunate incidents like over-discharge or damage.
• Remote Control Battery Storage: If the remote control will not be used for an extended period, remove the batteries and store them safely to prevent leakage, which could damage the remote control or pose a fire hazard.
• Lost Signal Locator: If the aircraft is powered on during flight and falls out of sight, walk to the vicinity of the aircraft and turn off the remote control to cut the signal. The aircraft will then emit a beeping sound to help you locate it.

7. Troubleshooting In-Flight Conditions

8. User Tips

• Battery Management: Ensure the battery is fully charged for optimal flight time and power. Always remove the aircraft battery after flying to prevent over-discharge and damage.
• Flight Practice: The model features a gyroscope for enhanced stability. Beginners should practice extensively in 6G mode before attempting advanced 3D stunts.
• Performance: This model is noted for its powerful motors and improved inverted flight capabilities compared to previous versions, offering a fun and engaging flying experience.

9. Warranty and Support

For warranty information, technical support, or to purchase replacement parts, please refer to the contact information provided with your product packaging or visit the official JIKEFUN website. Keep your purchase receipt as proof of purchase.

A user manual in PDF format is available for download: User Manual (PDF)