INSTALLING YOUR FISHFINDER > TESTING THE TRANSOM MOUNT INSTALLATION
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 might be necessary to move the transducer to a different location.
Fishfinder 90/140 Owner’s Manual | 13 |