INSTALLATION INSTRUCTIONSOWNER’S GUIDE &
Transom Mount with Integral Bracket
Speed & Temperature Sensor
Models: S69, ST69
Follow the precautions below for optimal product
performance and to reduce the risk of property
damage, personal injury, and/or death.
WARNING: Always wear safety goggles and a dust
mask when installing
WARNING: When the boat is placed in the water,
immediately check for leaks around the screws and
17-145-01 rev. 04 04/12/11
any other holes drilled in the hull.
CAUTION: Never pull, carry, or hold the sensor by the
cable as this may sever internal connections.
CAUTION: Never strike the sensor.
CAUTION: Never use solvents. Cleaners, fuel, paint,
sealants, and other products may contain strong
solvents, such as acetone, which attack many plastics
greatly reducing their strength.
IMPORTANT: Please read the instructions completely
before proceeding with the installation. These
instructions supersede any other instructions in your
instrument manual if they differ.
Applications
• Not recommended for boats with large inboard engine(s).
• Good operation from 4–50kn (5 – 58MPH)
• Adjusts to transom angles from 3
° –16°
Record the information found on the cable tag for future reference.
Part No._________________Date___________
Pretest
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(s) or it is inaccurate, check the connections
and repeat the test. If there is still no reading(s) or it is inaccurate,
return the product to your place of purchase.
Mounting Location
CAUTION: Do not mount in an area of turbulence or bubbles:
near water intake or discharge openings; behind strakes, struts,
fittings, or hull irregularities
CAUTION: Avoid mounting the sensor where the boat may be
supported during trailering, launching, hauling, or storage.
• For the best performance, the sensor must be in contact with
smooth water. To identify an area of clean water, observe the
water flow off the transom while the boat is underway.
• Mount the sensor as close to the centerline (keel) of the boat as
possible to ensure the sensor remains in the water when the
boat is turning.
• Single drive boat—Mount at least 75 mm (3") beyond the
swing radius of the propeller (see Figure 1). The starboard side
where the propeller blades are moving downward is preferred.
• Twin drive boat—Mount the sensor between the drives.
Tools & Materials
Safety goggles
Dust mask
Digital level
Screwdrivers
Weak solvent (alcohol)
Straight edge
Electric drill
Drill bits:
Mounting holes 5.4mm, #3, or 13/64"
Transom hole (optional) 20mm or 13/16"
Cable clamp holes 3mm or 1/8"
Masking tape
Marine sealant (suitable for below waterline)
Putty knife
Pencil
Zip-ties
Water-based antifouling paint (mandatory in salt water)
cable cover
cable clamps
50mm (2")
use double-sided tape
to hold the sensor
flush with the bottom
of the hull before installation
Figure 1. Mounting location on single drive boat
transom
angle
Installation
CAUTION: Measure and drill carefully, since the bracket is only
slightly adjustable.
perpendicular
to the waterline
transom
Figure 2. Measuring the transom angle
bracket
nuts
#8 adjustment
screws
#10 mounting
screws
Figure 3. Installing the adjustment and the mounting screws
CAUTION: To prevent drilling too deeply, wrap masking tape
around the bit 22mm (7/8") from the point.
CAUTION: Fiberglass hull—Minimize surface cracking by
running the drill in reverse until the gelcoat is penetrated.
NOTE: If the adjustable paddlewheel assembly separates from
the bracket, refer to Figure 10 on page 4 to reassemble.
Preparation
1. Measure the transom angle of the hull at the selected location
using a digital level (see Figure 2).
2. Insert the two nuts into the slots in the back of the bracket.
Install the #8 adjustment screws (see Figure 3).
Do not tighten the screws at this time.
3. There are three possible cable exits in the back of the bracket:
left, center, and right (see Figure 4). Choose the best cable exit
for your installation and route the cable through the notches in
the back of the bracket.
Mounting
CAUTION: The bottom edge of the adjustable paddlewheel assembly (not the bracket) must be flush with the bottom of the hull.
1. The hull surface must be free of any dust, oil, grease, or loose
paint. Clean the selected location with a weak solvent (alcohol).
2. At the selected location and FLUSH with the bottom of the hull,
stick the double-sided tape to the transom (see Figure 1). Peel
off the remaining non-stick layer.
3. Holding a straight edge against the bottom of the hull, position
the sensor at the selected location (see Figure 5). The bottom
edge of the paddlewheel assembly (not the bracket) must
be flush with the bottom of the hull. Press the bracket firmly
in place. Use additional double-sided tape if necessary.
4. Using a 5.4mm, #3, or 13/64" drill bit, drill the two mounting holes
perpendicular to the transom. To prevent drilling too deeply, wrap
masking tape around the bit 13mm (1/2") from the point.
5. Apply marine sealant to the two, #10 x 1-1/4", mounting screws
to prevent water seeping into the transom. Screw the sensor to
the hull (see Figure 3). Check again that the bottom edge of the
paddlewheel assembly (not the bracket) is flush with the bottom
of the hull. If necessary, slide the bracket up or down. Tighten
the screws. Do not over tighten.
2
back view
cable routed
through a side
cable exit
cable exit
Figure 4. Routing the cable in the bracket
cable exit
cable exit
transom
adjustable paddlewheel
assembly (not the bracket)
is flush with the hull bottom
hold drill
perpendicular
to transom
Figure 5. Positioning the sensor