When we buy new device such as Furuno 1734C we often through away most of the documentation but the warranty.
Very often issues with Furuno 1734C begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Fish Finder Furuno 1734C is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Fish Finder on our side using links below.