Top Flite TOPA0704 - Manual (Page 29)

29
❏
17. Drill two 1/16" [1.6mm] holes in the servo tray at
the approximate locations shown.
❏
18. Just as you did with outer pushrod tube for the
throttle servo, install the 6" [160mm] outer pushrod tube
into the hole in the fi rewall, pushing it into the fuselage
until it contacts the former. Drill a 3/16" [4.8mm] hole
through the former. Pass the pushrod tube through this
hole into the fuselage.
❏
19. Install the choke servo tray to the plywood former
with two #2

3/8" [ 9.5 mm] screws and #2 fl at washers.
Be sure to position it so that the servo arm is in line
with the pushrod tube. Cut off the excess pushrod tube.
Roughen the tube where it passes through the fi rewall
and formers. Then, glue it in place.
❏
20. Thread the nylon ball link and threaded rod onto
the end of the inner pushrod tube. Locate another 2-56

1" [25mm] threaded rod, a metal clevis, 2-56 nut and
silicone clevis keeper. Thread the nut and clevis onto
the wire and slide the clevis keeper onto the clevis.
❏
21. Temporarily slide the inner pushrod tube into
the outer pushrod and snap the nylon ball link onto
the ball on the choke arm. Install the clevis into the
outer hole of the choke servo arm. Using the length of
the threaded wire in the clevis, determine where to cut
off the excess pushrod from the inner pushrod tube.
Remove the clevis and wire from the servo arm. Cut
the inner pushrod tube and then screw the threaded
wire and clevis into the tube. Re-install the clevis into
the outer hole in the servo arm.
INSTALL THE COWL
❏
1. On the top of the fi rewall box make a line 1/4"
[6mm] from the edge of the box.
❏
2. Locate the two 3/4"

1"

1" [19

25

25] hardwood
blocks. Place them on the top of the fi rewall box aligning
the edge of the blocks with the lines you drew. Trace
the outline of the blocks onto the front of the fuselage.