Installation - Humminbird SIDE IMAGING Quick Start Manual

SIDE IMAGING® PLASTIC THRU-HULL TRANSDUCER

Installation

Perform the procedures in the following sections to install the transducer on your boat.
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| Drill the Hole and Prepare the Leveling Block
Follow the instructions below for the installation type that matches your hull and deadrise.
CAUTION! Use only the leveling block included with this transducer. Do NOT use a wooden leveling
block, as any swelling of the wood might cause the plastic on the transducer to shatter.
NOTE: A separately purchased fairing block can also be used to create a hydrodynamic waterflow
around the transducer body. The design and fabrication of this block varies greatly with different
hull shapes; therefore, it should be customized by a qualified marine technician.
Standard Installation (Flat Hull, Deadrise less than 2°):
For an installation that needs to minimize the impact of a small obstruction, but where the deadrise
is less than 1 to 2 degrees, use the included leveling block (uncut), and mount it outside the hull.
1. From the outside of the hull, drill a small pilot hole (smaller than the centering bit of your drill
bit or hole saw), at the mounting location you selected in section 2. Drill the hole perpendicular
to the hull.
2. Use the pilot hole (from the outside of the hull) to drill a 1 1/8" (2.8 cm) hole that is sized to fit
the threaded stem of the transducer. Drill the hole perpendicular to the hull.
3. Thoroughly clean and deburr the drilled hole and clean the outside of the hull.
4. The leveling block will be installed (uncut) on the outside of the hull. Proceed to Section 4:
Attach the Transducer.
Alternate Installation (Deadrise more than 2°):
For an installation where the deadrise is more than 2 degrees, use the included leveling block, cut at
the appropriate angle, to compensate for the deadrise.
1. From the outside of the hull, drill a small pilot hole (smaller than the centering bit of your drill
bit or hole saw), at the mounting location you selected in section 2. Drill the hole perpendicular
to the waterline.
2. Use the pilot hole (from the outside of the hull) to drill a 1 1/8" (2.8 cm) hole that is sized to fit
the threaded stem of the transducer. Drill the hole perpendicular to the waterline.
3. Thoroughly clean and deburr the drilled hole and clean the outside of the hull.
4. If the hull angle is greater than 2 degrees, cut the included leveling block and use both pieces
to level the transducer. The block should be cut to match the angle of the deadrise of the hull.
∆ Cut the leveling block into two equal pieces: one which mounts outside the hull and is shaped
to match the profile of the transducer, and one which mounts inside the hull and provides a
level surface for the fasteners.
∆ The thinnest wall of the outside leveling block must be at least 1/8" (3 mm).
∆ The leveling block included with your transducer can accommodate a maximum deadrise
angle of 25 degrees.
5. The leveling block will be installed (cut) on the inside and outside of the hull. Proceed to Section
4: Attach the Transducer.
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