Installing the Fishfinder 340C > Mounting the Transducer

Tool List (not included)—drill, 3/8" wrench or socket, 5/32" and 1/8" drill bits, masking tape, #2 Phillips screwdriver, and marine sealant.

To mount the transducer on a transom:

1.Position the transducer mount at the selected transom location. Make sure the transducer is parallel with the water line. Mark the center locations of each hole on the transducer mount.

2.Using a 5/32" bit, drill the pilot holes approximately 1"

(25 mm) deep at the marked locations. To avoid drilling the holes too deep, wrap a piece of tape around the bit at 1" from the point of the bit.

3.Apply marine sealant to the 5 x 30 mm screws. Attach the transducer assembly to the transom using the 5 x 30 mm screws. Adjust the transducer assembly to extend beyond the bottom of the transom approximately 1/8" (3 mm) on fiberglass hulls or 3/8" (10 mm) on aluminum hulls. Adjust the transducer assembly to be aligned parallel with the water.

4.Tighten the 10-32 locking nut until it touches the mounting bracket, and then tighten 1/4 turn more. (Do not overtighten.)

5.Place the first cable clamp on the transducer cable approximately one third of the distance between the transducer and the top of the transom.

Mark the location. Using a 1/8" bit, drill a pilot hole approximately 3/8" (10 mm) deep.

6.Attach the cable clamp using a 4 x 12 mm screw. Coat the screw with marine sealant before installation. Repeat steps

5 and 6 using the other cable clamp.

7.Route the transducer cable, as needed, to the Fishfinder. DO NOT CUT THE CABLE. Avoid routing the cable with electrical wires or other sources of electrical interference.

Drill pilot holes here.

Level

Vertical

Align with the transom

 

bottom. The transducer

 

should extend 1/8"

 

below fiberglass hulls

 

or 3/8" below aluminum

 

hulls.

 

Keep it parallel with the water line.

OK

 

12

Fishfinder 340C Owner’s Manual