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How To Remove A Transducer Mounting Plate? (Step-By-Step)

Are you looking to remove a transducer mounting plate from your boat? Whether you need to replace an old transducer or just want to clean up the hull, removing the mounting plate can be a tricky task.

But don’t worry, we’ve got you covered!

In this post, we’ll guide you through the process step-by-step, so you can get the job done like a pro.

How to Remove a Transducer Mounting Plate?

Follow my recommended simple steps below to remove a transducer mounting plate.

1. What You’ll Need

Before we dive into the removal process, let’s make sure you have all the necessary tools:

  • A good quality screwdriver
  • A piece of braided line or fishing line
  • A debonding agent (if the plate is sealed with 3M 5200 or similar)
  • Patience and a steady hand

2. Removing the Screws

someone removing screws from mounting plate on a boat

The first step in removing a transducer mounting plate is to remove the screws holding it in place.

Use a good quality screwdriver to unscrew each fastener carefully. If the screws are stuck or sealed with a sealant, you may need to apply some extra pressure or use a debonding agent to loosen them up.

As one boater suggests on Ohio Game Fishing, “You should be able to get the screws out with good screwdriver. If there’s sealant behind the board you can take a piece of braided line and two pairs of pliers to ‘saw’ through it.”

3. Dealing with Sealant

If your transducer mounting plate is sealed with 3M 5200 or a similar product, you may need to use a debonding agent to break down the sealant. Apply the debonding agent according to the instructions and let it work its magic.

As mentioned on The Hull Truth, “Apply the debond to the 4200 and let it work according to instructions.

Get the two tools one would use to install the M transducer. One tool to get under the flange of the transducer and the other to provide a leverage point.”

4. Removing the Plate

Once you’ve removed the screws and dealt with any sealant, it’s time to remove the mounting plate itself.

If the plate is stuck, you can use a piece of braided line or fishing line to sew through any remaining sealant or adhesive gently.

For Dragonfly transducers, Raymarine suggests “gently, but firmly striking the trailing end of the transducer with one’s hand in an upward motion to shear the silicone seal” when the transducer is mounted on a vertical surface (Raymarine Forum).

5. Cleaning Up

After removing the transducer mounting plate, you may need to clean up any residual sealant or adhesive from the hull.

Use a plastic scraper or putty knife to remove any excess material gently, being careful not to damage the hull’s surface.

==>> Also read: How to mount a transducer on a fiberglass boat?


Removing a transducer mounting plate may seem like a daunting task, but with the right tools and a bit of patience, you can get the job done without any hassle.

Just remember to take your time, be gentle, and follow the steps outlined in this guide.

If you’re unsure about anything or encounter a particularly stubborn plate, don’t hesitate to seek advice from experienced boaters or marine electronics professionals.

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