GREAT PLANES Ultra Sport 40 Plus, Instruction Manual

Page: 37 / 62

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3. Position the engine on the mount so that the face of the
drive washer is 4-7/8" to 5" [124mm to 127mm] in front of
the firewall (F1). Mark the position of the engine mounting
holes onto the mount. A Great Planes Dead Center Hole
Locator (GPMR8130) works great for this. Remove the
engine from the mount.
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4. Drill the engine mount at the marks with a 7/64"
[2.8mm] drill and then tap the holes with a 6-32 tap. Mount
the engine onto the mount using four 6-32 x 3/4" [19mm]
SHCS and four #6 lock washers. Use Great Planes Pro
Threadlocker on the SHCS and tighten them.
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5. Locate a 1/16 x 36" [914mm] music wire and cut it in
half. Insert the 18" [457mm] music wire into the throttle
plastic outer pushrod. Bend the wire as necessary so that it
reaches your carburetor. Connect the music wire to the
carburetor arm using a screw-lock pushrod connector. Use
Great Planes Pro Threadlocker on the screw-lock SHCS
and tighten it.
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6. Connect the throttle music wire to the throttle servo
arm with a screw-lock pushrod connector as shown above.
Use Great Planes Pro Threadlocker on the screw-lock
SHCS and tighten it.
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