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Make sure the location does not interfere with the boat's trailer. Usually,
the sensor is mounted about one foot to the side of the transom's center-
line.
Once you have determined the proper location for the unit, place the
sensor on the transom. The bottom of the bracket should be flush with
the hull's bottom. Using the sensor as a template, mark the hull for the
screw's pilot holes. Drill four 1/8" holes, one in each end of the slots.
Mount the sensor to the hull using #8 stainless steel wood screws (not
included). Use a high quality, marine grade above- or below-waterline
sealant to seal the screws. Make sure the sensor is flush with the bot-
tom of the hull and tighten the screws.
Stern view showing good location for mounting sensor on transom.
If the base of the transom has a radius, fill the gap between the tran-
som and the sensor with the sealant. This will help ensure smooth wa-
ter flow.
Speed sensor mounting configuration:
side view (left) and rear view (right.)
Route the sensor's cable through or over the transom to the sonar unit.
If you need to drill a hole in the transom to pass the connector through,
the required hole size is 5/8".
Caution:
If you drill a hole in the transom for the cable, make sure it is lo-
cated above the waterline. After installation, be sure to seal the
hole with the same marine grade above- or below-waterline seal-
ant used for the screws.
Good location
Transom
Bottom of hull
Bottom of hull