Humminbird HDR 650 - Manual (Page 32)

4. Permanently Mounting the Transducer
NOTE: Once permanently mounted, you will not be able to make further
adjustments to the transducer.
1. Make sure the position of the transducer is
marked.
2. Remove the water from inside the hull and
thoroughly dry the mounting surface. If
the surface is excessively rough, it may be
necessary to sand the area to provide a
smooth mounting surface.
3. Mix an ample quantity of two-part slow
cure epoxy slowly and thoroughly. Avoid
trapping air bubbles.
4. Coat the face of the transducer and the
inside of the hull with epoxy (see the
illustration Coating the Transducer with
Epoxy).
5. Press the transducer into place with a
slight twisting motion to purge any
trapped air from underneath, keeping the
pointed end of the transducer body
pointed forward, towards the bow (see the
illustration Pressing the Transducer Into
Place).
NOTE: Proper operation requires the
pointed end of the transducer body to face
towards the bow.
6. Weight the transducer so that it will not move while the epoxy is curing.
NOTE: When the epoxy cures, no water is necessary inside the hull.
Pressing the Transducer Into Place
Coating the Transducer with Epoxy
28 Inside the Hull Transducer Installation