Humminbird SSTH 14 HW MSI+ T Guide D'installation page 4

STAINLESS STEEL THRU-HULL TRANSDUCER Installation Guide
Δ The leveling block included with your transducer can accommodate a maximum deadrise angle
of 25 degrees.
7. The leveling block will be installed (cut) on the inside and outside of the hull. Proceed to Section
4: Attach the Transducer.
4
| Attach the Transducer
1. Feed the transducer cable through the drilled center hole, then temporarily install the transducer
to check the fit.
2. Apply a generous amount of marine-grade silicone sealant or slow-curing epoxy inside the
drilled center hole and along the mating surfaces of the transducer housing and leveling block.
3. Proceed to the instructions that correspond with your transducer orientation (see illustrations).
4. Make sure the rounded end of the transducer is facing the bow, pointing forward, and parallel
to the centerline.
5. Insert the transducer into the drilled hole from outside the boat with the leveling block(s)
installed according to your installation type.
6. From inside the boat, install the large washer and nut onto the threaded stem. Hand tighten
only.
7. Install the small washers and nuts onto the two anti-rotation bolts. Apply the included anti-
seize compound to each bolt as you are installing the hardware.
5
| Finish the Installation
1. Hand tighten the nuts onto the threaded transducer stem and the anti-rotation bolts ONLY
until the assembly is firmly seated, then tighten NO MORE than 1/8 of a turn extra.
WARNING! To avoid damage, do not overtighten the nuts.
NOTE: This type of transducer is directional in nature and must be aligned with the front of the
boat (the direction of travel) and parallel to the centerline. Failure to align the transducer properly
will result in incorrect bottom readings and incorrect fish locations. (See the illustrations for
orientation).
2. Remove the excess adhesive sealant from the outside of the hull to ensure smooth water flow
over the transducer.
6
| Route the Cable
The transducer cable must be routed to the point where the control head is mounted. Your boat may
have a pre-existing wiring channel or conduit that you can use for the routing.
1. Route and secure the transducer cable connector to the control head, avoiding areas where it
may be damaged or interfere with normal boating operations.
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 is too short, extension
cables are available to extend the transducer cable up to a total of 50' (15 m). For assistance,
contact Humminbird Technical Support for more information.
CAUTION! Do NOT mount the cables where the connectors could be submerged in water or
flooded. If cables are installed in a splash-prone area, it may be helpful to apply dielectric
grease to the inside of the connectors to prevent corrosion. Dielectric grease can be
purchased separately from a general hardware or automotive store.
532715-1_A
Standard Installation
(Flat Hull)
hull
leveling
block
Apply marine
(uncut)
adhesive sealant to
all mating surfaces
Alternate Installation
(Deadrise greater than 2°)
cut leveling
blocks
hull
1 (25 mm)
Apply marine adhesive
minimum
sealant to all mating
thickness
surfaces
Correct Orientation of
the Transducer
square end
rounded end
facing the stern
facing the
of the boat
bow of the
boat
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