Humminbird SHS 7, SHS 7W User Manual

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High Speed Transducer

Thank You

Thank you for choosing Humminbird®, America’s #1 name in fishfinders. Humminbird® has
built its reputation by manufacturing top-quality, thoroughly reliable marine equipment.
Genuine Humminbird® accessories offer the opportunity to upgrade and expand the
capabilities of your Humminbird® product.

NOTE: Your transducer may not look exactly like the transducer shown in the
illustrations, but it will mount in exactly the same way.

About Transom Mount Installation

There are a number of ways to install a transducer on your boat. The transom mount
installation provides the least loss of signal since the transducer is mounted outside the boat
hull. This installation also allows adjustment of both running angle and depth after the
transducer is mounted, which enables you to tune the installation for best results. Also, the
mounting hardware is designed to pivot the transducer body out of the way should the boat
strike debris in the water, or when trailering. All necessary hardware is included for this type
of installation.

Before You Start

Following are instructions for the installation of the High-Speed Transducer. We encourage
you to read these instructions carefully to get full benefit from your Humminbird® accessory.

If you find that any items are missing from your installation kit, contact our Humminbird®
Customer Resource Center at 1-800-633-1468 or visit our website at www.humminbird.com.

In addition to the hardware supplied with your transducer, you will need a powered hand drill
and various drill bits, Phillips and flat head screwdrivers, a ruler or measuring tape, pen or
pencil, and silicone sealant.

Locating the Transducer

As a boat moves through the water, turbulence is generated by the weight of the boat and
the thrust of the propeller(s). This turbulent water is normally confined to areas immediately
aft of ribs, strakes, or rows of rivets on the bottom of the boat, and in the immediate area of
the propeller(s). It is very important to locate the transducer in an area of relatively
turbulence-free water. If the propeller(s) are forward of the transom, it may be impossible to
find an area clear from turbulence, and a different mounting technique should be considered.

If possible, viewing the transom of the boat while the boat is moving will provide the best
means of locating clear water, and if maximum high-speed operation is a high priority, this is
the recommended method. If this is not possible, select an area on the transom where the
hull forward of this location is smooth and free of protrusions or ribs.

Another consideration is the angle of deadrise. The transducer, when mounted, should point
straight down. The design of the transducer will allow a deadrise of 15 degrees while
remaining pointed straight down. If the deadrise is greater than 15 degrees it will be
necessary to angle the transducer slightly. While this does not significantly degrade
performance, you must keep in mind that the area you are viewing on your fishfinder screen
may be somewhat to one side of the boat.

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High Speed Transducer

On boats with stepped hulls, it may be possible to mount the transducer on the step. Never
mount the transducer on the transom behind a step, as this area of the transom will not be
in contact with the water at high speeds.

Mounting the Bracket

Once you have identified the location, use the mounting template from the last page of these
instructions. This template serves two purposes: it provides a means of ensuring that the
deadrise of the transom falls within allowable limits, and it locates the three mounting holes
which must be drilled.

Hold the template on the transom of the boat in the location you have selected. Align the
template vertically, ensuring the lower edge of the transom on either side of the template
falls within the horizontal lines on the template. If not, tilt the template slightly so that the
lower edge of the transom on both sides of the template fall within the allowable range.

Using a pencil or a punch, mark the three mounting holes onto the transom. Using a 5/32”
(4 mm) bit, drill the three holes to a depth of approximately 1” (25 mm).

NOTE: On fiberglass hulls, it is best to use progressively larger drill bits to reduce the
chance of chipping or flaking the outer hull coating.

Use a silicone sealant to fill the drilled holes, especially if the holes penetrated the transom wall.

Align the metal mounting bracket with the mounting holes. The center slot should be above
the two outer slots. (This bracket and all other hardware supplied is top quality stainless steel
for maximum strength and corrosion protection). Insert the three 1” (25 mm) flat head wood
screws into the drilled holes, but do not completely tighten.

Assembling the Transducer

Attach the pivot to the transducer body as shown in the following illustration using the two
1/4--20 x 5/8” (16 mm) machine screws, toothed washers, and square nuts. The toothed
washers must fit on the inside of the transducer ears, between the pivot and the ears. The
square nuts will be prevented from rotating by the pocket in the back of the pivot.

An Allen wrench is provided which fits all of the 1/4--20 screws, but do not fully tighten the
screws at this time.

Attaching the Transducer

Slide the assembled transducer into the metal bracket from the bottom, aligning the large
hole at the top of the bracket with the hole in the pivot.

Insert the headed pin through the pivot holes in the bracket and pivot. The headed pin can
be inserted from either side of the bracket.