May 15, 1978
4. ACCESSORIES
4.1 To Install Thru Hull Fittings
NOTE:
The bottom of the MEGA is balsa cored in the areas indicated in Fig. Balsa coring in the
form of stringers is also used where indicated. Depending on the location of the thru hull,
follow the appropriate instruction.
In areas where the floor liner exists, it will be necessary to install an access port in the liner
to reach the hull. Plastic covers of various sizes are available from your dealer to cover the
access ports.
Balsa Cored Hull
a. Drill hole size to accommodate the thru hull fitting.
b. Using a knife, remove the balsa core from the area surrounding the hole, one inch in
from the edge of the hole.
c. Fill this area with a marine sealer (3M Scotch Grip Wood Adhesive 5230 or
equivalent) and allow to dry.
d. Install the sea cock or thru hull fitting. Another layer of marine sealer should be
applied between the interior portion of the fitting and the hull. Allow to dry.
Directions illustrating the various components of the thru hull fitting should be included with
the unit.
Note: After applying the marine sealer between the interior of the fitting and the hull, tighten
the unit.
Non Balsa Cored Hull: To ensure correct positioning of the thru hull, consult with your local
marine dealer.
a. Drill hole size to accommodate the thru hull fitting.
b. A small back--up plate is required for strength purposes. A hole the same size as that
in the hull should be drilled in the wood. The holes may then be lined up, the wooden
back-up plate bedded with sealer, and glassed into place using mat and resin.
c. Install the thru hull fitting.
Directions illustrating components of the thru hull fitting should be included with the unit.
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