My marine speed transducer needs to be replaced. I have a Beneteua 351 which is 16 years old. I have cleaned the transducer several times and then reinstalled. It will work for a couple of minutes and then stop. In replacing the transducer is it as simple as pulling it out from the hull, snipping the two wires and reconnecting the two wires to the new transducer and reinstalling?

Ray marine has an extensive library on-line. I have usually been able to find what I need there. May take some digging though.

I assume that when it resets to 2.2 feet that the readout is flashing. If so the it sounds like you have a bad transducer as the problem has been getting progressively worse.
The transducer needs to be replaced. Sounds like the sending crystal is fractured.

First, make sure that the connection is good, clean, and tight on both ends of your transducer. Sometimes turbulance or temperature stratifications in the subsurface water will cause this. Also, check the specifications of your transducer. Some do not perform well while moving at high speed. One test, when on plane, when the problem occurs, slow the boat and see what happens to the readout. Repeat this several times. This should help narrow down what is causing the problem.

Sound like the transducer is catching air.

Just about any marine chandler should be able to source one of these for you. They're made by airmar who pretty much make all marine ducers now. Here is the link to just one place you can order it.

-Steve


Uniden Nylon Thru Hull Transducer For QT206 650 5406

I would contact our customer service group and they will be able to help you. Our number is 800-633-1468.

What you are experiencing sounds like air bubbles crossing the face of the transducer. If you have a transom mount transducer check the face of the transducer. Make sure that it is clean. Also make sure the front of the transducer is a tiny bit lower than the back. The digital readout on the screen will only happen when you have a strong signal of the bottom.

Check the transducer for any damage on the front part. Also make sure there isn't any damage on the bottom of the boat that is causing air bubbles to cross the face of the transducer. If it works at slow speeds there is definitely something causing air bubbles.

Spring not available must buy housing and replace or if it is sleeved, buy housing and slide in new sleeve there are two different types, one has a removable sleeve with flapper
A long shot would be Raymarine tech support 800-539-5539
I can sell you the part 847-746-0100 technicalmarine.com

You need to set the transducer lower. When at speed, the hull of the ship raises up out of the water and hence your transducer is probably not deep enough at these times to give a proper reading.