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Do not mount the sensor in an area of
turbulence or bubbles:
- near water intake or discharge openings
- behind strakes, struts, fittings, or
hull irregularities
- behind eroding paint (an indication of
turbulence).
Avoid mounting the sensor where the
boat may be supported during trailering,
launching, hauling, and storage.
Note 1: For single drive boat, mount on the starboard side at least 75 mm (3") be-
yond the swing radius of the propeller.
Note 2: For twin drive boat, mount between the
drives.
Installation of bracket
The bracket is designed for a standard 13° transom an-
gle. For 2° to 10° or 19° to 22° transom angle, the shim
is required.
1. Cut out the installation template (enclosed with
transducer) along the dotted line.
2. At the selected location, position the template, so the arrow at the bottom is
aligned with the bottom edge of the transom. Being sure the template is parallel
to the waterline, tape it in place.
Warning: Always wear safety goggles and a dust mask.
3. Using a 4 mm, #23, or 9/64" bit, drill three holes 22 mm (7/8") deep at the locations
indicated. To prevent drilling too deeply, wrap masking tape around the bit 22 mm
(7/8") from the point.
Fiberglass hull: Minimize surface cracking by chamfering the gelcoat. If a cham-
fer bit or countersink bit is not available, start drilling with a 6mm or 1/4" bit to a
depth of 1 mm (1/16").
4. Using the three #10 x 1-1/4" self-tapping screws, temporarily screw the bracket to
the hull. DO NOT tighten the screws completely at this time. Follow the step 1-4
in "Attaching the sensor to the bracket", before proceeding with "Adjusting".
5. If you know your transom angle, the bracket is designed for a standard 13° tran-
som angle.
11°-18° angle: No shim is required. Skip to step 3 in "Adjustments".
Other angles: The shim is required. Skip to step 2 of "Adjustments".
NOTICE
Deadrise angle
Align template arrow with
bottom edge of transom.
Positioning the template
16
Parallel to
waterline
1. MOUNTING
75 mm (3")
mimimum
beyond swing
radius
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