Furuno GP-1870F, Operator'S Manual

Page: 157 / 209

13. INSTALLATION
13-9
Mounting location
To ensure the best performance, the sensor must be submerged in aeration-free and
turbulence-free water. Mount the sensor close to the centerline of your boat. On slow-
er heavier displacement hulls, positioning it farther from the centerline is acceptable.
Allow adequate space above the bracket for it to release and rotate the sensor up-
ward.
Note 1: Do not mount the sensor in an area of turbulence or bubbles: near water in-
take or discharge openings; behind strakes, struts, fittings, or hull irregularities; behind
eroding paint (an indication of turbulence).
Note 2: Avoid mounting the sensor where the boat
may be supported during trailering, launching, haul-
ing, and storage.
Note 3: For single drive boat, mount on the star-
board side at least 75 mm (3") beyond the swing ra-
dius of the propeller, as shown in the right figure.
Note 4: For twin drive boat , mount between the
drives.
How to install the bracket
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.
• Straight edge • Marine sealant
• Pencil • Cable ties
• Water-based anti-fouling paint (mandatory in salt water)
Height
Height without
speed sensor
191 mm (7-1/2")
Height with
speed sensor
213 mm (8-1/2")
75 mm (3")
minimum beyond
swing radius
Align template vertically.
Deadrise angle
Slope of hull
Parallel to
waterline
Align template arrow with
bottom edge of transom.