Great Planes Super Sportster 40 ARF - GPMA1040 - Manual (Page 11)

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1. Locate the 19-5/8" [498mm] throttle pushrod wire. Attach
the “Z-bend” into the inside hole of the carburetor control
arm. Make sure the “Z-bend” does not interfere with any
parts of the engine.
The engine in your aircraft is mounted slightly different from
those in most R/C aircraft. This is done to allow the use of
many different types of engines. It also allows a “no-drill”
approach to ease the installation. Read through the
procedure and understand all the steps before actually
performing them.
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2. The engine is “sandwiched” between the engine mount
and the engine mount plates. Slide the throttle pushrod into
the pushrod housing and rest the engine on the mount. Slide
a #6 washer onto a 6-32 x 1" machine screw. Repeat this
process for all four screws and washers. Pass the screws
through the engine mount plates. The screws then go
through the mount, passing in front of and behind the engine
mounting flange. The plates will be resting on the top of the
engine’s mounting flanges. The 6-32 nuts are then placed
into the recesses on the bottom of the engine mount. Start
the screws, but do not tighten them at this time. We still
need to align the engine!
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3. Install the spinner backplate, propeller, propeller washer
and the propeller nut onto the engine. Turn the propeller
counterclockwise until it is against the smallest pins on the
backplate. Keep the propeller horizontal when the engine is
against its compression (the point at which you feel
resistance when you turn the crankshaft counterclockwise).
This is a good habit to get into when installing propellers
onto model airplanes. If the engine quits during flight, the
propeller will stop horizontally, therefore reducing the
chance of propeller breakage if you are forced to land on
rough terrain. Use an adjustable wrench (not a pliers) to
securely tighten the propeller nut.
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4. Measure the distance from the back of the spinner backplate
to the firewall. It should be 4-1/8" [105mm] on both sides.
Adjust the engine if needed and tighten the screws evenly to
secure the engine to the mount. Use thread-lock on the nuts
to prevent loosening.
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5. Attach the fuel line (with the clunk) to the carburetor.
Engine Installation
11