Model Tech Magic Formula 3D ARF Manual page 31

Connect your radio system and plug the left-side elevator servo into the receiver. Center the servo by double-checking that the
elevator trim lever on your transmitter is centered, then use a couple of pieces of masking tape, taped between the elevator half and
the stabilizer, to hold the elevator half centered.
Remove the masking tape from the elevator halves and double-check that both servo horns and both elevator halves are still
centered. If the elevator halves are not centered, adjust the clevises until they are.
Move the elevator halves up and down several times to ensure that the pushrod assemblies do not bind. They should operate
smoothly in both directions.
IMPORTANT When you connect the elevator servo leads together with a Y-harness, both elevator halves should move the
same direction.
IMPORTANT It's important that both elevator halves track evenly together throughout the entire range of deflection. If one
elevator half moves more than the other, this will cause the airplane to roll when it pitches up or down during flight. Look from the
back of the fuselage at the trailing edge of both elevator halves. Slowly move the elevator halves up and down several times
(using the transmitter control stick) to ensure that both elevator halves track evenly together throughout the whole range of
deflection. If the elevator halves do not track together (e.g., one moves more than the other though the range of deflection), you
will need to adjust the position of the clevis and/or the snap-keeper on one of the pushrod assemblies until both elevator halves
track evenly.
Install the servo horn onto the left-side servo, making sure that the
servo horn is centered and pointing down toward the bottom of
the fuselage.
Install the servo horn retaining screw to secure the servo horn to
the servo.
Thread one nylon clevis onto the pushrod wire and snap the clevis
into the outermost hole in the control horn.
Hold the pushrod wire with a pair of pliers to prevent it from turning
or twisting when installing the clevis.
Repeat the previous procedures to install the second elevator
pushrod assembly on the right side of the fuselage.
Remember, the servo arm on the right side of the fuselage should
point up toward the top of the fuselage.
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