Eagle Electronics FISHEASY 240 User Manual

Page 16

tion (often called simply "thru-hull"). In that case, a hole is cut in the
hull and a specially designed transducer is mounted through the hull

with a threaded shaft and nut. This puts the transducer in direct con-

tact with the water.
Typically, shoot-thru-hull installations give excellent high speed opera-

tion and good to excellent depth capability. There is no possibility of

damage from floating objects. It can't be knocked off when docking or

loading on the trailer.
However, the shoot-thru-hull installation does have its drawbacks.

First, some loss of sensitivity does occur, even on the best hulls. This

varies from hull to hull, even from different installations on the same

hull. This is caused by differences in hull lay-up and construction.
Second, the transducer angle cannot be adjusted for the best fish

arches. This can be a problem on hulls that sit with the bow high when

at rest or at slow trolling speeds.
Third, a transducer CAN NOT shoot through wood and metal hulls.

Those hulls require either a transom mount or a thru-hull installation.
Fourth, a Skimmer transducer with a built-in temp sensor will show

only the temperature of the bilge, not the water surface temp.
Follow the procedure listed in the shoot-thru-hull installation section

at the end of this lesson to determine if you can satisfactorily shoot

through the hull.
Transom Transducer Assembly and Mounting
The best way to install these transducers is to loosely assemble all of the

parts first, place the transducer's bracket against the transom and see if

you can move the transducer so that it's parallel with the ground.
1. Assembling the bracket. Press the two small plastic ratchets into

the sides of the metal bracket as shown in the following illustration.

Notice there are letters molded into each ratchet. Place each ratchet

into the bracket with the letter "A" aligned with the dot stamped into