Garmin gpsmap 400 Manuale Utente

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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 unit. DO NOT

CUT THE CABLE. Avoid routing the cable with electrical

wires or other sources of electrical interference.

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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.

  NOTE: A solid fiberglass hull can be no more than 5/8" (9.53

mm) thick when using a 500 W transducer, and  no more than 1" 

(25.4 mm) thick when using a 1 kW transducer.