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“Graphics a nd s pecifications m ay c hange w ithout n otice”.

MS:123

ASSEMBLY MANUAL

Specifications:

Wing span ----------------------------66.9in (170cm).

Wing area -----------------761.1sq.in (49.1sq dm).

Weight -------------------------------------9.3lbs (4.2kg).

Length ------------------------------51.1in (129.8cm).

Engine  ------------------ 0.75-0.91cu.in ----2-stroke.
                                     0.91-1

.25cu.in ---4-stroke.

Radio -------------------6 channels with 8  servos.

Retracts landing gear (included).

Electric conversion: optional

SIZE .75 - .91

Summary of Contents for ZERO MS:123

Page 1: ...ANUAL Specifications Wingspan 66 9in 170cm Wingarea 761 1sq in 49 1sqdm Weight 9 3lbs 4 2kg Length 51 1in 129 8cm Engine 0 75 0 91cu in 2 stroke 0 91 1 25cu in 4 stroke Radio 6 channels with 8 s ervos...

Page 2: ...gned to help you build a great flying aeroplane Please read this manual thoroughly before starting assembly of your ZERO Use the parts listing below to identify all parts WARNING Please be aware that...

Page 3: ...follow using a high quality thin C A glue 2 Remove each hinge from the wing panel and aileron and place a T pin in the center of each hinge Slide each hinge into the aileron until theT pin is snug aga...

Page 4: ...aileron hinge area 5 Turn the wing panel over and deflect the aileron in the opposite direction from the opposite side Apply thin C A glue to each hinge making sure that the C A penetrates into both...

Page 5: ...on 3 Place epoxy into hole This will harden the threads and prevent the crews from pulling loose 4 Thread a control horn end with aluminum washer lock nut until the top edge of the end is 9mm from the...

Page 6: ...uction Manual 6 3mm Flap control horn Install the elevator control horn using the same method as same as the aileron control horns INSTALL ELEVATOR CONTROL HORN Hinge C A glue C A glue Hinge T pin 2 s...

Page 7: ...the engine mount included with your model 2 Use four 4x30mm head bolts and four 4mm washers to attach the engine mount rails to the firewall Tighten the screws Make sure to use threadlock on the screw...

Page 8: ...d move freely inside the tank The top of the vent tube should rest just below the top of the tank It should not touch the top of the tank 6 When satisfied with the alignment of the stopper assembly ti...

Page 9: ...ffler The vent line will connect to the muffler and the line from the clunk to the carburetor INSTALLING THE FUSELAGE SER VOS 1 Install the rubber grommets and brass collets onto the throttle servo Te...

Page 10: ...ector in the servo arm as same as picture below Adjustable Servo connector Servo arm Loctite secure 1 PCS Throttle servo arm Elevator servo arm Rudder servo arm 3 32 Hole INSTALLING THE SWITCH Install...

Page 11: ...lide the pushrod tube in the firewall and guide it through the fuel tank mount Use medium C A to glue the tube to the firewall and the fuel tank mount 6 Connect the Z bend in the 450mm throttle pushro...

Page 12: ...unt rails 4 On the fire wall has the location for the throttle pusshrod tube pre drill 7 Slide the throttle pushrod wire into the tube Position the engine between the mounts Use four M4x30mm machine s...

Page 13: ...Move the throttle stick to the closed position and move the carburetor to closed Use a 2 5mm hex wrench to tighten the screw that secures the throttle pushrod wire Make sure to use threadlock on the s...

Page 14: ...2 While keeping the back edge of the cowl flush with the marks align the front of the cowl with the crankshaft of the engine The front of the cowl should be positioned so the crankshaft is in nearly...

Page 15: ...15 www seagullmodels com 3mm 5 2mm 5 2mm Blind nut Epoxy Epoxy...

Page 16: ...ery tray to the fuselage Tighten the screws using machine screws M3x15mm to secure the tray in position Speed control 5 Attach the speed control to the side of the motor box using two sided tape and t...

Page 17: ...ler should not touch any part of the spinner cone If it does use a sharp modeling knife and carefully trim away the spinner cone where the propeller comes in contact with it String Small weight 3 Use...

Page 18: ...18 6 Secure the servo tothe aileron hatchusing Phillips screwdriver and the screws provided with the servo 7 Apply 1 2 drops of thin C A to each of the mounting tabs Allow the C A to cure without usi...

Page 19: ...string from the wing at the servo location and use the tape to attach it to the servo extension lead Pull the lead through the wing and remove the string M2x12mm M2x12mm Attach the string to the serv...

Page 20: ...ect the linkage as shown and secure the control wire with a snap keeper 8mm Snap keeper M2 lock nut Metal clevis 1 Mark the control wire where it crosses the servo arm hole Bend at the mark 2 Make a 9...

Page 21: ...retracts landing gear installation INSTALLING RETRACTABLE LANDING GEAR 1 Locate the items necessary to install the retracts landing gear and retract linkage instal lation Cut 3 Glue hardwood mounting...

Page 22: ...rs Cut 7 Install the wheel wells after adjusting the retracts Roughen the bottom side of the well and glue the wells using C A glue as shown 2 8 3 6 2 4 5 7 2 7 5 Install the linkage into the connecto...

Page 23: ...door to the retract strut Apply a thin epoxy to the two gear door brack ets to secure the gear door to the retract strut as shown 5 8 Epoxy 7 6 4 Epoxy Adjustable Servo connector Servo arm Loctite sec...

Page 24: ...ate the centerline of the horizont al stabilizer at the trailing edge andplace a mark Use a triangle and extend this mark from back to front across the top of the st abilizer Also extend this mark dow...

Page 25: ...orm until the proper alignment is achieved The tips of the stabilizer should also be equal distance from the tips of the wing 3 Put the stabilizer into place in the position of the fuselage 5 When you...

Page 26: ...orT pins used to hold the stabilizer in place Carefully inspect the glue joints Use more epoxy to fill in any gaps that may exist that were not filled previously and clean up the excess using a paper...

Page 27: ...top edges of the filler block and to the lower hinge also Set the stabilizer in place and realign Double check all of your measure ments once more before the epoxy cures Hold the stabilizer in place w...

Page 28: ...ZERO Instruction Manual 28 HINGING THE RUDDER Glue the rudder hinges in place using the same techniques used to hinge the ailerons C A glue Epoxy...

Page 29: ...29 www seagullmodels com C A glue Screw...

Page 30: ...and rudder pushrods assembly as pictures below 3 Thread one clevis and M2 lock nut on to each elevator control rod Thread the horns on until they are flush with the ends of the con trol rods 1 Install...

Page 31: ...31 www seagullmodels com 8mm Cut RUDDER PUSHROD HORN INSTALLATION 8mm 8mm M2 lock nut M2 clevis Pen C A glue...

Page 32: ...ibutors 1 Locate items necessary to install pilot cockpit panel and canopy 3 Position the pilot figure on the canopy floor as show Locate the oval shaped on the canopy floor and remove the c overing U...

Page 33: ...of canopy glue around the inside edge of the canopy Position the canopy onto the hatch Use tape to hold the canopy secure until the glue fully cures 4 Position the canopy onto the fuselage Trace aroun...

Page 34: ...the model is clean and free from oily fingerprints and dust Position decal on the model where desired using the photos on the box and aid in their location 1 Plug the five servo leads and the switch l...

Page 35: ...35 www seagullmodels com Close Position servo arm 12mm Open Position servo arm...

Page 36: ...racteristics Moving the balance forward may improve the smoothness and arrow like tracking but it may then require more speed for take off and make it more difficult to slow down for landing Moving th...

Page 37: ...flip the servo re versing switch on your transmitter to change the direction E From behind the airplane look at the aileron on the right wing half Move the aileron stick to the right The right ailero...

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