Hangar 9 RV-8 Assembly Manual page 21


Step 6
Use a 9/64-inch hex wrench and one of the 8-32 x 3/4-inch
socket head screws and a #8 washer to draw the four 8-32
blind nuts into the backside of the firewall. Note that the
barbs on the blind nuts face the wood and keep the blind
nuts from rotating or falling out.
Hangar 9 RV-8 Assembly Manual

Step 7
Test fit the engine to the mount. You will need to use a rotary
tool and sanding drum to remove a small amount of material
from the engine mount to clear the carburetor as shown in the
following images.

Step 8
Connect the Z-bend on the 16-inch (406mm) pushrod to the
carburetor as shown.
note: When connecting the pushrod to the four-stroke,
make note the direction of the carburetor. It it does not
match to that in the photo, follow the instructions provided
with the engine to rotate the carburetor 180 degrees.

Step 9
Attach the motor mounts to the firewall using four 8-32
x 3/4-inch socket head screws and four #8 washers. Use
a 9/64-inch hex wrench to lightly tighten the screws. You
should be able to move the mounts so their position can be
fine-tuned for your particular engine.
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