6
SPEED/TEMPERATURE SENSOR INSTALLATION -
(Magna III Plus Only)
Mount the speed/temp sensor on the boat’s transom in a location where the
flow of water is the smoothest. There should be a minimum of turbulence
and air bubbles in the chosen location. The port (left) side of the transom
is preferred, however, the starboard (right) side can be used if necessary.
Do not mount the speed sensor behind strakes, ribs, or thru-hull fittings.
These will disturb the flow of water to the speed sensor. In a typical
installation, the speed sensor is mounted six to twelve inches from the
centerline of the hull. The sensor must always be in the water to function
properly. Make certain the chosen location is in the water even at high
speed or when the boat is on plane.
Once you determine the proper location, place the sensor on the transom.
Make certain the sensor’s bottom is flush with the bottom of the hull. Mark
the transom in four places, two in each slot. Drill a 5/32" mounting hole at
each location. Mount the sensor to the hull with four #10 stainless steel
screws. Use a good grade of caulking compound to seal the screws.
Adjust the sensor so it is flush with the bottom of the hull and tighten the
screws. If the base of the transom has a radius, fill the gap between the
transom and the sensor with caulking compound. This will help ensure a
smooth water flow.
Route the sensor cable to the in-line connector on the Magna Plus’ power
cable. The speed/temp sensor is now ready for use.
SIDE VIEW
REAR VIEW
GOOD LOCATION
