Lowrance X-4 Pro Installation And Operation Instructions Manual page 13

Flat-bottom hull
Align transducer centerline with hull bottom
6. Route the transducer cable through or over the transom to
the sonar unit. Make sure you leave some slack in the cable at the
transducer. If possible, route the transducer cable away from other wir-
ing. Electrical noise from the engine's wiring, bilge pumps, VHF radio
wires, cables and aerators can be picked up by the sonar. Use caution
when routing the transducer cable around these wires.
WARNING:
Clamp the transducer cable to the transom close to the
transducer. This can prevent the transducer from enter-
ing the boat if it is knocked off at high speed.
If you need to drill a hole in the transom to pass the connector through,
the required hole size is 5/8". (If you intend to route an additional speed
or temp sensor cable through the same hole, you will need a 1" (25.4
mm) drill bit instead.)
Caution:
If you drill a hole in the transom for the cable, make sure it is
located above the waterline. After installation, be sure to seal the
hole with the same marine grade above- or below-waterline sea-
lant used for the mounting screws.
7. Make a test run to determine the results. If the bottom is lost at
high speed, or if noise appears on the display, try sliding the trans-
ducer bracket down. This puts the transducer deeper into the water,
hopefully below the turbulence causing the noise. Don't allow the
transducer bracket to go below the bottom of the hull!
Bottom
of
hull
and attach to transom.
9
Deep-"vee" hull