Installing the Fishfinder 400C

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

7.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.

8.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

 

Shoot-Thru-Hull Installation

To avoid drilling a hole to mount a thru-hull transducer, a transducer can be secured with epoxy inside a boat (shoot-thru- hull installation). This type of installation can provide better noise reduction and allow you to use a higher Gain setting. For a transducer to be mounted inside the hull (shoot-thru, not thru- hull), the boat must be fiberglass, with no core. Contact your boat manufacturer if you are unsure. Professional installation might be necessary.

Some transducers are specifically designed to be mounted inside a fiberglass hull. The standard plastic transom mount transducer can also be mounted using this method. If using a temperature sensing transducer, the temperature shown reflects the hull temperature.



Fishfinder 400C Owner’s Manual