Humminbird 120 Fish Finder User Manual


 
INSTALLATION PREPARATION
ALTERNATE MOUNTING METHODS
ALTERNATE TRANSDUCERS AND MOUNTING METHODS
Your Humminbird fishfinder comes with everything necessary for installation and
operation on most boats. However, there are several situations which may require a
different type of transducer. Inboard boats, wood or metal hulls, and sail boats create
unique transducer mounting needs Alternate transducers and mounting methods are
detailed below.
Portable Mounting
The standard transducer can be adapted for portable
installations with a portable mounting kit available from
Humminbird. This accessory adapts your transducer to a
suction cup mount for temporary installation on the boat hull
or other surface.
Trolling Motor Mounting
The standard transducer can also be adapted to mount on
most trolling motors using a different accessory kit. This
accessory includes a bracket and hose clamp that allows
mounting the transducer to the body of most trolling motors.
Thru-Hull Mounting
Thru-hull transducers install through a hole drilled in the hull
of the boat. Larger boats or boats with inboard motors create
turbulence that make transom mounting ineffective. Also,
hulls that are very thick or are double layered, or made from
materials such as wood or metal, (which do not conduct
sonar signals) make inside the hull mounting inadvisable.
Thru-hull mounting may require the use of a fairing block to level the transducer with the
waterline. Also, since special tools and knowledge may be required to perform this type
of installation, it is best to refer to a qualified marine technician.