GREAT PLANES PT-19 Instruction Manual page 15

Follow these instructions with deviations as necessary for
your comfort level and requirement for accuracy.
1. Optional: Remove the engine head and carburetor
from the engine. Cover any openings in the engine to seal
out debris.
2. Fit the cowl over the engine as far as it will go (without
the engine head and carburetor it should fi t most of the
way). Use a pencil to mark the inside of the cowl where it
interferes with whatever part of the engine is preventing the
cowl from going on.
3. Use your Dremel to cut the fi rst hole at your mark. Test-
fi t the cowl. Use a felt-tip pen to mark the outside of the cowl
where more trimming is required. Residual ink can be wiped
off with a paper towel square and denatured alcohol later.
4. Continue to trim, fi t, mark and repeat until you can get
the cowl to go on all the way over the engine.
More trimming will be required once the head and carbutetor
have been replaced to the engine, but once you can get the
cowl to fi t all the way on it's time to mount the cowl. After the
cowl has been mounted you can fi nish the trimming procedure
for the engine head, carburetor, needle valve and muffl er.
15