
20
Sonar unit with external speed sensor.
The temperature sensor is built into the transducer.
Speed Sensor Installation
The following instructions describe how to install the speed sensor.
Recommended tools include: drill, 5/8" drill bit, 1/8" drill bit for pilot holes,
screwdriver.
Required supplies include: four #8 stainless steel wood screws (3/4" long),
high quality, marine grade above- or below-waterline caulking compound.
(If you intend to route the sensor cable through the same hole as the
transducer cable, you will need a 1" (25.4 mm) drill bit instead of the 5/8"
drill bit.)
To install speed sensor:
1. Find a location on the boat's transom where the water flow is smooth-
est. Don't mount the sensor behind strakes or ribs. These will disturb the
Temperature sensor
built into transduce
SP-U speed only
senso
Sonar unit
rear view
Power/trans-
ducer cable
12-volt battery
3-amp fuse
HST-WSU
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