Specifications

This style of transducer is popular as a replacement transducer since it was the primary style

used on older boats and the stern will fir the same size hole as the previous defective or obsolete

transducer. In order to provide good, steady readings, it requires the use of a fairing block.

Without a fairing block, the large portion of the transducer is unprotected and runs the risk of

being hit off by objects in the water. Fairing blocks are best made out of hard wood such as oak.

The shape of the block will be determined by the shape of your hull and the style of transducer

you choose.

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WOODEN BOATS require the use of a bronze transducer or bronze fittings due to the fact

that when the boat is out of the water, the wood dries. When the fitting is installed and the

boat returned to the water, the wood will swell and possibly crack a nylon type of transducer.

Therefore, bronze is required for all wooden boat installations.

HOW TO INSTALL POWERBOAT BRONZE (STEM TYPE) TRANSDUCER:

1. Drill a 1/8” pilot hole in the preferred transducer location. Reference previous section on

determining the best location for your type of boat.

2. Drill a hole “slightly” larger than the stem of the transducer. Be careful not to make it too

large as you will run the risk of water leaking into the hull.

3. Cut the fairing block to the shape of your hull and insert the cable and stem of the

transducer through ½ of the fairing block.

4. Apply a good grade of underwater marine sealant (polysulphide compound) to the flange of

the transducer and to the surface of the leveling block where the block touches the outside

of the hull. Apply enough sealant so that it will bead out around the transducer as you

tighten the transducer nut.

5. Put the remaining ½ of the fairing block on the inside of the transducer along with sealant

next to the hull. Tighten transducer nut lightly with a wrench.

6. Clean off the excess sealant from around the transducer.

INSTALLATION: POWERBOAT BRONZE TRANSDUCERS

IMPORTANT: AFTER LAUNCHING THE BOAT, BE CERTAIN TO CHECK THE TRANSDUCER

LOCATION FOR LEAKS.

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