Page 13
location you have chosen will not interfere with any bulkheads, plumbing
or any other obstruction.
1. Drill a small hole first from the inside of the hull at the desired location
for the transducer. This will be a locating hole for the final drilling.
2. From the outside, enlarge the locating hole to ¼” or whatever size
necessary for the pilot drill of the 2” hole saw. Drill the pilot hole vertically,
followed by the hole saw.
3. After drilling, remove any rough edges around the hole and thoroughly
clean and sand the inside and outside surfaces around the hole.
4. Remove the wing nut from the transducer housing.
Apply a generous
amount, approximately 1/16” thick, of a good marine adhesive/sealing
compound around the lip of the housing that contacts the hull. The
compound should also extend up the sidewall of the housing, ¼” higher
that the combined thickness of the hull and wing nut. This will ensure
there is sealant in the threads to seal the hull and to hold the wing nut
securely in place.
5. From the outside of the hull, insert the transducer housing and gently
rotate the housing to squeeze out any excess sealant.
6. From the inside, thread down the wing nut until it makes contact with
either the hull or fairing block, if used. The wing nut should then be
tightened to a snug fit, hand tighten only.
DO NOT OVERTIGHTEN
THE WING NUT.
Note: For a cored fiberglass hull, thru hull transducer installation should
only be performed by a trained technician. Improper sealing of the core
material can lead to premature failure or possible water leakage.
