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Locate the following parts: Cowl Frame, Left anf Right Crankshaft Support Arms, Crankshaft,
Carburator Adjustment Handle and four (4) 0-80 Nuts. These parts may need signifcant adjusting to
fit each other so adjust any bending very slowly. The Right Crankshaft Support Arm has the longer
bolt studs than the left one when fitting them into the four holes at the end of the Fuselage Frame.
Using a 1/32" drill bit ream/drill out the top and bottom holes on the Crankshaft adjcent to the locator
pins and on center left and right sides. See engine detail on plan sheet for hole locations. Glue the the
Carburator Adjustment Handle into the top hole. Carefully thread loosely the four 0-80 nuts onto the
bolt studs enough for a snug fit but still slightly loose. This will allow for moving. Now, from within the
cockpit add the Crankshaft indexing the two pins on the Crankshaft into the holes on the Crankshaft
Support Arms and through the center hole in the Cowl Frame with the Carburator Adjustment
Handle up as seen on the plan sheet. Bending and fitting the Crankshaft Support Arms may be
required and the Crankshaft needs to be centered left to right and up and down best as possible. This
is critical for the proper alignment of the Engine. Once the proper fit is attained tighten the four (4) 0-80
Nuts for a snug fit. DO NOT OVER TIGHTEN this will break off the bolt stud. If broken save broken
stud with nut to be glued later.
Now remove the Firewall from the Photo Etched Sheet and brush both sides hoizontally with a
Scothbrite pad or fine sandpaper for a natural brushed aluminum finish. Next bend the two sides 90
degrees on the half etched lines and the bottom about 20 degrees from centerline to match the lower
Fuselage Frame. Remove the four 0-80 nuts and the Cowl Frame and fit the Firewall on bolt studs,
now replace the Cowl Frame in place and with a pencil, mark a cut line on the Firewall with the top
edge of the Cowl Frame as a guide. See picture on the next page.Then remove both and cut along the
trim line on the Firewall and carefully lightly sand the cut edge smooth. Now replace both back in place
and add the four 0-80 Nuts for a snug fit. DO NOT OVER TIGHTEN! Note the large center hole in the
Firewall should index around the center Crankshaft support on the Cowl Frame as seen in the picture
on the next page.
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