Adjusting the Initial Transducer Angle

One click too high

Correctly aligned (transducer side seam

aligned with boat bottom)

Trailing edge

Leading edge

One click too low

7.Adjust the transducer assembly vertically, until the seam on the leading edge of the transducer (the edge closest to the transom of the boat) is level and just slightly below the hull.

Adjusting the Transducer

Leveling the Mounting

Mounting Position

Assembly Horizontally

 

Level

Seam aligned with boat hull

NOTE: The transducer has a natural downward slant of 4-5 degrees from leading edge (closest to the boat transom) to trailing edge (farthest away from the boat). Looking at the back of the transducer, the seam should be slightly below the bottom of the hull.

8.Continue to adjust until the bracket is also level from port to starboard (horizontally level as you look at the transducer from behind the boat.

9.Mark the correct position on the transom by tracing the silhouette of the transducer mounting bracket with a pencil or marker.

10.Tighten the pivot bolt, using the pivot screw and nut to lock the assembly. Hand tighten only!

11.Snap open the assembly and hand-tighten the two mounting screws, then snap the assembly closed.

NOTE: You will drill the third mounting hole and finalize the installation after you route the cable and test and finish the installation in the following procedures.

4. Routing the Cable

The transducer cable has a low profile connector, which must be routed to the point where the control head is mounted. There are several ways to route the transducer cable to the area where the control head is installed. The most common procedure routes the cable through the transom into the boat.

NOTE: Your boat may have a pre-existing wiring channel or conduit that you can use for the transducer cable.

1.Unplug the other end of the transducer cable from the control head. Make sure that the cable is long enough to accommodate the planned route by running the cable over the transom.

CAUTION! Do not cut or shorten the transducer cable, and try not to damage the cable insulation. Route the cable as far as possible from any VHF radio antenna cables or tachometer cables to reduce the possibility of interference. If the cable

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Humminbird 957C, 917C manual Routing the Cable, Adjusting the Initial Transducer Angle