Great Planes Yak-54 3D Indoor EP ARF - GPMA1131 - Manual (Page 14)

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o 9. Install the rudder servo using the same method that
was used to install the elevator servo. NOTE: The rudder
servo will be installed on the opposite side of the fuselage
from the elevator servo.
o 10. Once the rudder servo has been installed and has
been secured using some foam safe CA, locate a control
horn and glue it into the slit in the rudder, on the same side
as the rudder pushrod.
o 11. Thread a z-bend through the control horn, so that the
pushrod mounts to the underside of the control horn. Place
one of the included pieces of heat shrink around the z-bend
and pushrod. Secure them together by shrinking the tubing
using a soldering iron.
BE VERY CAREFUL when using the
soldering iron when very close to the foam. The foam will
melt if it is touched with a hot iron.
o 12. Re-center the rudder servo and adjust the length of the
pushrod by moving the z-bends. Once the servo is centered
and the rudder is in the neutral position, further secure the
z-bends to the rudder pushrod using some CA glue.
o 13. Align the pushrod guides so that they are perpendicular
to the fuselage and keep the pushrods as straight as possible.
Then glue the pushrod guides to the fuselage using some
foam safe CA.