Great Planes Escapade MX GP/EP ARF - GPMA1202 - Manual (Page 14)

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3. Use a marker to mark the position for the throttle pushrod
as shown on the fi rewall pictured. Use a 13/64” drill bit to drill
through the fi rewall. Be careful not to drill into the fuel tank.
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4. Use a propeller reamer or correctly sized drill to enlarge
the hole in your propeller and in the spinner backplate to
fi t your engine. Place the backplate of the spinner on the
engine and position the engine on the mount so there will be
a maximum 1/8" [3mm] space between the backplate of the
spinner and the front of the fuselage. Note: Most 4-stroke
engines will not be able to be positioned far enough aft on
the mount to achieve this spacing, so just move the engine
as far back as possible.
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5. Use a Great Planes Dead Center ™ Hole Locator
(GPMR8130) or a sharpened wire to mark the location of
the engine mounting holes onto the mount.
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6. Drill #29 (or 9/64" [3.6mm]) holes through the engine
mount at the marks you made for the mounting screws. Mount
the engine with four 6-32 x 3/4" [19mm] machine screws and
#6 lock washers. Use an 6-32 tap to tap threads into the holes
after drilling them. Then, use 6-32 x 3/4" machine screws and
#6 lock washers for mounting the engine. Note: Four-stroke
engines may have to be temporarily dismounted later while
hooking up the throttle.
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7. Some engines may need to have clearance for the needle
valve. Cut clearance in the fuselage as needed for your engine.