Horizon Hobby Hangar 9 ASH 31 6.4M Manuel D'utilisation page 11

7. Trim the rudder pushrod so the finished length is 95mm between
the clevis pins. Attach one end of the pushrod to the rudder servo
arm.
8. With the fuselage upside down in a stand, feed the servo extension
through the rudder servo cutout and out the elevator servo cutout at
the top of the fin. This extension will be pulled through the fuselage
with the elevator servo extension later.
9. Install the rudder servo through the tailwheel opening and into the
servo mount. The servo is installed with the output shaft toward
the front of the aircraft and the servo arm toward the left side of
the fuselage. Feed the open end of the pushrod through the molded
opening in the tail as you fit the servo into place. Keep some tension
on the servo lead to ensure the lead is not pinched in the opening.
TIP: Use a magnetic screwdriver or attach a small magnet to a
regular screwdriver to install the servo screws.
10. Rotate the servo horn so the pushrod extends out the back of the fin.
11. Attach the rudder control horn to the pushrod.
ASH 31 6.4M ARF
12. Push the rudder over the hinge points in the fin.
95mm
13. Carefully insert the rudder hinge pin through the hole in the top of
the rudder and feed it fully through each of the hinge points until it
exits through the bottom of the rudder.
TIP: The hinge pin is a tight friction fit. It may be necessary to lightly
push or pull on the rudder as the pin is inserted to get the pin to
seat fully. Do not force the pin through. If you feel resistance, move
the rudder slightly and continue to insert the pin.
14. When fully inserted, the hinge pin may be taped at the top of the
rudder if desired or if the hinge pin is excessively loose.
11 EN