Si-tex NAVSTAR 10, Operation Manual

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Installation of the Transducer
Positioning the Transom-Mount Transducer
Follow these instruction if you are installing the transom-mount transducer.
Begin by finding the best location for the mounting bracket. Here are the rules:
If your boat has one propeller (outboard or inboard-outboard), mount the transducer about
18"(455mm) to the side of the centerline of the boat. See Picture 1-2 Choose the side that is on the
down stroke of the propeller.(This is usually the starboard side of the boat.) This will reduce any
interference cause by air bubbles.
If your boat has twin propellers (outboard or inboard-outboard), place the transducer near the
centerline of the boat.
If the propeller can be turned to steer the boat, allow at least 2"(50mm) beyond the swing radius of the
propeller. This will prevent the propeller from damaging the transducer when it is turned.
Do not mount the transducer behind any hull fittings, intakes, or other parts which extend from the hull.
These may cause turbulence or air bubbles.
If the boat will be carried
on a trailer, be sure the
transducer will not hit any
rollers, bunks or fittings
on the trailer.