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Remove your engine from the mounting beams and install them to
the firewall, using four M3 x 20mm socket-cap screws, four M3 flat
washers and four M3 blind nuts. Tighten the screws firmly to draw the
blind nuts into the back of the firewall.
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Using a drill with a 5/32" diameter drill bit, drill a hole through the firewall at each of the four marks you drew.
STEP 2: ALIGNING AND INSTALLING YOUR ENGINE
❑
Set your engine onto the engine mounting beams.
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Using a ruler, measure the distance from the firewall to the front of
your engine's drive washer. Adjust the depth of the engine so that the
measurement is 4-1/8".
❑
Install your engine to the engine mounting beams, using four
M3 x 25mm socket-cap screws, eight M3 flat washers and four M3
lock nuts.
❑
Reinstall the engine mount assembly onto the firewall and tighten
the four socket-cap screws firmly.
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IMPORTANT
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The 4-1/8" distance measurement is not set in stone. Frankly, for this airplane, it's not very critical. If you need
to move the engine out (to clear the rear-mounted carburetor of a four-stroke engine, for instance) it won't cause any problem.
❑
Using a pencil, mark the locations of the engine mounting holes onto the engine mounting beams.
❑
Remove your engine and carefully drill 5/64" diameter pilot holes through the engine mounting beams. Be careful to drill the
holes straight down and not at an angle and don't drill down through the engine mounting platform.
❑
Using a 1/8" diameter drill bit, carefully enlarge the pilot holes you drilled, being careful not to drill down into the engine mounting
platform.
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IMPORTANT
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In order to install your engine in the next procedure, you will need to temporarily remove the two engine
mounting beams from the firewall.
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IMPORTANT
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We suggest applying Blue Threadlocker to the four socket-cap screws. This will prevent them from loosening
during flight.
