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STEP 1: INSTALLING THE ENGINE MOUNTING BEAMS
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The following procedures outline the installation of a two-stroke engine. If you are installing a four-stroke
engine, the installation procedures are the same. The Magnum XL .28A engine is shown.
To aid in alignment, the horizontal and vertical thrust lines have been predrawn onto the firewall for you.
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Remove the muffler and high speed needle valve assembly from your engine and set them aside.
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Temporarily glue the two engine mounting beams to your engine's
mounting lugs, using a couple of drops of thick C/A.
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The location of the engine is not important at this time. It's more
important that the beams are square to the mounting lugs.
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The precut notch in the right-side engine mounting
beam should face up, as shown.
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Using a ruler, measure the width between the centerline of the
holes in the two engine mounting beams.
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This distance will vary depending on the width of your engine's
crankcase.
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Divide the measurement found in the previous procedure in half.
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Measure this resulting distance and draw one vertical line to the right
of the vertical thrust line and one vertical line to the left of the vertical
thrust line.
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Make sure that the two vertical lines you draw are parallel to the
vertical thrust line.
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Using a ruler and a pencil, measure and draw a horizontal line 1/2"
above the horizontal thrust line, then measure and draw a horizontal
line 13/16" below the horizontal thrust line.
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Again, make sure that the two horizontal lines you draw are parallel
to the horizontal thrust line.
Continued On Next Page
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