Pre-Assembly Checklist

1. Unpack all parts, inspect EPO foam for cracks, check all servo wiring, fan assembly, landing gear.
2. Confirm parts: Fuselage, main wing assembly, horizontal stabilizers, vertical fin, canopy, wing spar, landing gear set, drop tanks, screws & plastic wing mount hardware.
3. Tools needed: Small Phillips screwdriver (included), tape, hobby knife (optional).

Step 1: Main Wing Installation

1. Slide the carbon wing spar through the fuselage wing tunnel and pass through both wing roots.
2. Route the aileron + flap servo wires from each wing into the cockpit opening.
3. Mate the wing roots tightly to the fuselage saddle. Fit the plastic locking brackets on top of the wing joint.
4. Secure wings with the supplied screws.
5. Connect wing servo Y-harness leads to the fuselage servo extension cables.

Do not force wires; avoid pinching servo cables between wing and fuselage.

Step 2: Horizontal Stabilizers (Elevators)

1. Plug elevator servo connectors into the pre-run servo extension wires inside fuselage tail section.
2. Slide each horizontal stabilizer into the dedicated slots on both sides of rear fuselage.
3. Double-check no binding; surfaces must move freely full travel. No screws needed for horizontal tails.

Step 3: Vertical Stabilizer (Rudder Fin)

1. Connect rudder servo plug to fuselage extension wire.
2. Insert vertical fin into fuselage top rear slot.
3. Secure firmly using the supplied screw at the base of vertical stabilizer.

Step 4: Landing Gear Installation

1. Nose gear: Insert steerable nose landing gear into the fuselage bottom front slot, fasten with screw.
2. Main landing gear:
   • Left & right main gears are NOT interchangeable �C match orientation to wing cutouts.
   • Insert gear assembly into wing slots, rotate 90�� to lock in place.
3. Test steering: Nose gear links to rudder servo; confirm steering movement matches rudder input.

Step 5: Drop Tanks (Auxiliary Fuel Tanks)

Step 6: Radio Receiver Wiring (Critical)

• CH1 Ailerons
• CH2 Elevator
• CH3 Throttle (EDF Fan)
• CH4 Rudder
• CH6 Flaps

Step 7: Battery Installation

1. Remove the cockpit/battery hatch.
2. Fit hook-and-loop strap inside battery compartment.
3. Install 4S LiPo battery (2200�C2700mAh). Slide battery forward/backward to tune CG.
4. Secure battery tightly with strap �C loose battery will shift CG mid-flight!

Connector: XT60. Double-check polarity before plugging in.

Step 8: Transmitter Setup & ESC Arm Procedure

1. Turn on transmitter first, throttle stick fully LOW.
2. Connect flight battery to ESC.
3. Listen for beep sequence: number of beeps = LiPo cell count (4 beeps for 4S). When beeping stops, ESC is armed.
4. Test all control surfaces:
   • Ailerons: Roll left/right match stick
   • Elevator: Pull stick back �� elevator up
   • Rudder: Left stick �� nose left
   • Flaps: Confirm slow deployment/retraction
   • Throttle: Fan spins smoothly, no rubbing inside duct

If fan spins backwards: swap any two motor wires on the ESC to reverse rotation.

Step 9: Center of Gravity (CG �C Most Important!)

• Balance the plane by supporting under the wing at this location.
• Plane should hang slightly nose-down or level.
• If tail-heavy: shift battery forward. If nose-heavy: move battery backward.
• Do NOT fly outside this CG range; high risk of stall or unrecoverable dive.

Step 10: Final Pre-Flight Inspection

1. Tighten all assembly screws (wings, vertical fin, landing gear).
2. Check all control surfaces for binding.
3. Check EDF fan: No foam debris inside duct; fan blades clear of casing.
4. Check all wiring cannot be caught by moving control surfaces.
5. Check landing gear tires secure.
6. Set flight timer on radio to 4 minutes for first flights (conservative).

Pro Assembly & Flight Tips

1. If you have the Vector stabilizer version, complete gyro calibration after all assembly finished (follow vector manual).
2. Use foam-safe CA/hot glue only if you need foam repairs. Regular CA melts EPO foam.
3. For grass fields: Leave drop tanks installed; they slightly protect wing undersides.
4. Takeoff: Use medium throttle, keep straight with rudder; avoid over-rotating to prevent stall.
5. First flight: Keep speed up, test flaps at altitude, do not attempt tight aerobatics until you verify handling.

Troubleshooting Common Issues

• EDF fan rattles: Check for loose debris inside intake, confirm fan hub tight.
• Servo jitter: Improve receiver antenna placement; separate receiver from ESC power wires.
• Control binding: Check servo wires are not trapped between fuselage and wings/tail surfaces.

Arrows Hobby F86 Sabre 64mm EDF �C Simplified Assembly Checklist

Required Parts You Need To Buy Separately

• 5CH+ RC Transmitter + Receiver
• 4S LiPo 2200�C2700mAh 35C+ (XT60 plug)
• LiPo Balance Charger
• Small Phillips screwdriver (included in kit)

Assembly Steps Checklist

• Check EPO foam for cracks
• Verify servos, wiring, 64mm EDF fan, landing gear intact
• Lay out all components: fuselage, wings, horizontal stabilizers, vertical fin, canopy, spar, drop tanks, screws

• Run carbon spar through fuselage & both wing roots
• Feed aileron/flap servo cables into fuselage cockpit
• Align wings to fuselage saddle
• Fit top locking brackets, secure with screws
• Connect wing servo plugs to fuselage extensions
• Ensure wires are NOT pinched

• Plug servo leads
• Slide tails into rear fuselage slots
• Test free movement, no binding

• Connect rudder servo wire
• Insert fin into fuselage rear slot
• Lock down with base screw

• Nose steer gear: install & screw fixed
• Main gears: left/right not interchangeable, insert and rotate to lock
• Test nose gear steering matches rudder input

• Push-fit under wing mounting points (no screws)

• Mount receiver with foam tape inside cockpit
• Channel mapping
  CH1: Aileron��CH2: Elevator��CH3: Throttle��CH4: Rudder��CH6: Flaps
• Route antennas away from ESC/motor to avoid interference

• Open cockpit battery hatch
• Secure battery strap
• Load 4S LiPo, adjust forward/back for CG
• Double check XT60 polarity before power on

1. Turn transmitter ON first, throttle stick minimum
2. Plug flight battery
3. Wait for 4 cell beep confirmation (armed)
4. Check all control surface directions
5. Power up EDF; confirm fan spins freely, no rubbing

Fan reverse: swap any two motor wires on ESC

• Support plane at CG point
• Slightly nose down / level = good
• Tail heavy �� move battery forward
• Nose heavy �� move battery back

• Retighten all screws
• All control surfaces move without binding
• No wires near moving parts
• EDF duct free of foam fragments
• Set flight timer: 4 minutes for maiden flight

Quick Troubleshoot Cheat Sheet