Humminbird XNT 9 20 Installation Manual page 4

TRANSDUCER Installation Guide
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Leading edge (the edge closest to the transom of the boat).
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One click too high: the transducer is tilted out of the water and cannot maintain a sonar signal.
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Trailing edge (the edge farthest away from the boat).
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Correctly aligned: the transducer side seam is parallel with the water line.
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One click too low: the deeper the transducer is in the water, the more likely that a rooster tail
of spray will be generated at high speeds. You also risk the transducer being struck and
damaged by objects in the water, so make sure that the transducer is as high as it can be and
still be submerged in the water.
3. 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) (see Adjusting the Horizontal Transducer
Angle).
4. Once finalized, mark the correct position on the transom by tracing the silhouette of the
transducer mounting bracket with a pencil or marker.
5. Tighten the pivot bolt, using the pivot screw and nut to lock the assembly. Hand-tighten only!
CAUTION! Do not use a high speed driver on this combination of fasteners. Hand-tighten only.
6. Hand-tighten the two mounting screws.
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.
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| Route the Cable
You can route the cable over the transom or through a hole in the transom above the waterline.
Your boat may have a pre-existing wiring channel or conduit that you can use to route the cable.
Select the routing method that is best for your boat configuration, and purchase any extension
cables, cable clips, clamps, etc. as needed.
Also, keep in mind the following:
Δ It is best to route the cable to the side of the transducer so the transducer will not damage
the cable during movement.
Δ Allow enough slack in the cable for slight movement at the pivot point.
Δ If you drill any holes, fill them with marine-grade silicone sealant.
Adjusting the Initial Transducer Angle
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532310-3_A
Adjusting the Horizontal
Transducer Angle
Routing the Cable
Fill drill holes with
marine-grade silicone
sealant.