13
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
Shee
t 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.