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13. INSTALLATION
13-8
Pre-test for speed and temperature
Connect the sensor to the instrument and spin the paddlewheel. Check for a speed
reading and the approximate air temperature. If there is no reading, return the sensor
to your place of purchase.
Tools and materials required
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.
• Scissors • Masking tape
• Safety goggles • Dust mask
• Electric drill • Screwdrivers
• Drill bit:
For bracket holes: 4 mm, #23, or 9/64”
For fiberglass hull: chamfer bit (preferred),
6 mm, or 1/4”
For transom hole: 9 mm or 3/4” (optional)
For cable clamp holes: 3 mm or 1/8”
• Straight edge • Silicone 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