Key V2 feature: Screwless Quick-Release Main Wings, reinforced vertical fins, full-flying horizontal stabilizers, integrated landing gear doors.

Required tools: 1.5mm / 2.0mm hex screwdriver, foam-safe CA glue (optional), tape, servo horn pliers.

Reference CG: 150 mm behind wing leading edge at wing root (official factory spec).

Pre-Assembly Step 0: Unbox & Inventory Check

1. Lay out all parts on soft mat to avoid scratching EPO foam.
2. Verify components:
   • Main fuselage (pre-built with EDF, ESC, retract controller, wiring harness)
   • Left / Right main wings (quick-release system, aileron + flap servos, LED lights)
   • Left / Right vertical stabilizers (rudders, carbon reinforcement tubes, light wires)
   • Left / Right full-flying horizontal stabilizers
   • Magnetic nose cone, small scale foam/plastic detail parts
   • Pushrods, ball links, all mounting screws
3. Visually inspect all wiring, servos, retracts for shipping damage; check fan for foreign debris.

?? Do NOT power electronics until all mechanical assembly is finished.

Step 1: Install Vertical Stabilizers (Twin Rudders)

1. Each vertical fin has an embedded carbon fiber reinforcement tube + LED/rudder servo extension wire.
2. Route the vertical stabilizer wiring carefully through fuselage tail slot; pull wires out inside fuselage rear compartment.
3. Insert carbon tube fully into matching fuselage socket, seat fin flush against fuselage surface.
4. Secure each vertical fin with 2x KM3��10mm machine thread screws (V2 upgraded hardware).
5. Connect fin wiring plugs to fuselage main harness; double-check polarity for navigation LEDs.
6. Attach rudder pushrod between servo arm and rudder horn; secure ball links.
7. Repeat for opposite vertical stabilizer. Ensure both fins are perfectly vertical & symmetrical.

Step 2: Mount Full-Flying Horizontal Stabilizers (Elevators)

1. Retrieve metal rotating shafts, metal retaining rings, PM2��4mm set screws, washers.
2. Slide metal fixed ring onto rotating shaft. Insert shaft through horizontal stabilizer mounting bore.
3. Insert assembled shaft into rear fuselage horizontal tail mount.
4. Secure shaft with 2�� PM2��4mm set screws (tighten gently, do not strip foam/plastic).
5. Attach elevator pushrod between fuselage elevator servo and horizontal stabilizer horn.
6. Repeat for second horizontal stabilizer.
7. Manually test free movement of both elevators; confirm no binding across full travel.

Step 3: Install Quick-Release Main Wings (V2 Quick II System)

Wing Latch Operation Rule

• Unlock: Press switch fully down, release �� button pops up
• Lock: Press switch fully down, release �� button stays recessed (cannot pull wing out)

1. Extend landing gear (via transmitter later; manually swing gear down for assembly clearance).
2. Unlock both fuselage wing latches (press buttons, let pop up).
3. Carefully pull the wide ribbon wiring harness out of fuselage wing root socket.
4. Plug ribbon cable firmly into matching wing-side connector (align notch, do not force pins!).
5. Slide main wing onto fuselage carbon support tube; push wing fully home until flush against fuselage.
6. Press wing latch button down to LOCK. Gently tug wing outward to confirm locked securely.
7. Repeat identical procedure for opposite wing.

?? Critical: Never pull the wing without unlocking latches; risk tearing ribbon wiring!

Step 4: Fit All Pushrods & Control Surfaces

1. Ailerons: Connect pushrod between wing aileron servo horn and aileron control horn.
2. Flaps: Attach flap pushrods; set initial neutral position with flaps level with wing surface.
3. Nose steering: Install 55mm nose gear steering pushrod to nose gear servo.
4. Check every ball link: Snap closed securely; verify zero binding at full deflection.
5. Adjust linkage length so all surfaces sit perfectly neutral when servos are centered.

Step 5: Fit Scale Exterior Details

1. Nose cone: Simply push into front fuselage; internal magnets hold it securely (removable for transport).
2. Install small foam fairings, exhaust nozzles, door covers at tail/rear fuselage using foam-safe CA glue (only if loose).
3. Confirm landing gear door linkages move freely with retract operation.

Step 6: Radio Installation (PNP Version)

1. Open large battery hatch below fuselage. Locate main MFCB wiring board.
2. Mount receiver inside fuselage battery compartment (use double-sided foam tape; keep away from EDF motor to avoid EMI).
3. Wire channel assignment (standard 7-channel setup):
   • Ch1: Aileron
   • Ch2: Elevator
   • Ch3: Throttle (EDF)
   • Ch4: Rudder
   • Ch5: Landing Gear Retracts
   • Ch6: Flaps
   • Ch7: Optional Lights / Thrust Reverser
4. Bind your radio transmitter to receiver.
5. Double-check all servo plugs; verify no reversed polarity.

Step 7: Initial Power-On & Mechanical Test (NO BATTERY INTAKE NEAR FAN!)

1. Connect flight battery (6S or 8S LiPo based on your motor variant).
2. Turn on transmitter first, then aircraft power.
3. Test sequence:
   1. Center all transmitter sticks; confirm all control surfaces sit neutral.
   2. Check aileron, elevator, rudder direction �C reverse channels in radio if movement is backwards.
   3. Test retracts: Cycle gear UP / DOWN multiple times; confirm doors open/close smoothly, no jamming.
   4. Deploy/retract flaps; check travel range.
   5. Test navigation/formation LEDs and nose taxi light.
   6. Briefly blip throttle at LOW power �C stand clear of EDF inlet/outlet.

? Keep hands, cables, debris far away from 90mm fan at all times when powered.

Step 8: Balance Aircraft (CG Check �C Mandatory Before First Flight)

1. Remove nose cone, place battery inside battery bay.
2. Balance jet at 150 mm aft of wing leading edge at wing root (official Freewing CG mark printed on lower wing).
3. If nose heavy: Move battery backward; tail heavy: shift battery forward.

Tail-heavy F-22 is extremely unstable �C never fly without correct CG!

Step 9: Final Pre-Flight Inspection Checklist

Critical V2 Assembly Tips & Warnings

1. Ribbon wing cable: Avoid sharp bending; disconnect wings gently for transport.
2. Foam repairs: Only use foam-safe CA; regular superglue melts EPO.
3. Landing gear: Do not taxi aggressively on rough pavement; suspension struts can bend.
4. Thrust reverser (factory ESC): Set up in radio carefully; only activate during landing rollout.
5. Transport: Unlock and remove both wings; detach magnetic nose cone to reduce length.