Garmin 160C - Manual (Page 11)

Fishfinder 160C Owner’s Manual 7
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NSTALLATION
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NSTRUCTIONS
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RANSDUCER
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NSTALLATION
Testing the Transom Mount Installation
Perform this test after you install the Fishfinder. Because you need
water to carry the sonar signal, the Fishfinder does not function
properly with the transducer out of the water. When you place your
boat in the water, CHECK FOR LEAKS around the screw holes that
are below the water line. DO NOT leave your boat in the water for
an extended period of time without checking for leaks.
To test the transom mount installation:
1. Begin testing the installation at a slow speed. If the sonar
appears to be working properly, gradually increase the boat’s
speed observing the sonar’s operation. If the sonar signal
suddenly is lost or the bottom return is severely degraded,
note the speed at which this occurs.
2. Return the boat to the speed at which the signal was lost.
Make moderate turns in both directions and see if the signal
improves.
3. If the signal strength improves while turning, adjust the
transducer so that it extends another 1/8" below the transom
of the boat. It might take several adjustments to eliminate the
degradation.
4. If the signal does not improve it may be necessary to move
the transducer to a different location.