Top Flite TOPA0704 - Manual (Page 27)

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7. Temporarily install the spacers and stand-offs onto
the fi rewall. Mount the engine to the stand-offs.
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8. Thread a nylon ball link onto one end of a 2-56

1" [25mm] threaded wire. Snap the ball link onto the ball
on the throttle arm. Position the wire perpendicular to
the fi rewall and so it is in contact with the fi rewall. Make
a mark on the fi rewall with a felt tip pen. Remove the
engine from the stand-offs. Drill a 3/16" [4.8mm] hole
through the fi rewall on the mark.
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9. Install the throttle servo into the servo tray using
the hardware that came with the servo. Make a single
armed servo arm and install it on the servo. Note: We
have installed a plywood mini servo tray that can be
glued over the standard servo opening if you wish to
use a mini servo.