3.There is no bottom readingvisible on the display.

In very deep water, it may be necessary to increase the sensitivity setting manually to maintain a graphic depiction of the bottom. If you are using a transducerswitch to connect twotransducersto the PiranhaMAX™,makesure that the switch is in the correctpositionto connect a transducerthat is in the water. (If a trolling motor transducer is selected and the trollingmotoris out of the water, no sonar information appears.) If none of these actions solves the problem,inspectthe transducercablefrom end to end forbreaks,kinks,or cuts in the outer casing of the cable. If the transducer is connected to the unit through a switch, temporarily connect it directly to the unit and try again. If none of these actions identifiesan obvious problem,the transduceritselfmay be at fault. Be sure to include the transducer if returningthe unit for repair.

4.When in very shallow water, I get gaps in the bottom reading and inconsistentdigital depth indication.

The PiranhaMAX™ will work reliably in water 3 feet (90 cm) or deeper. Remember that the depth is measured from the transducer, not from the surface of the water.

5.The unit comes on before I press the POWER-MENU key, and won’t turn off.

Check the transducer cable — if the outer jacket of the cable has been cut and the cableis in contactwithbaremetal, you will need to repairthe cut with electrical tape.If thereis no problemwith the cable, disconnect the transducer from the unit and see if the problem is corrected, to confirmthe sourceof the problem.

6.I get gaps in the reading at certainspeeds.

The suction cup mount is designed for quick, easy installation and removal, NOT for high speed operation. If you intend to operate your boat at any speed faster than trolling speeds, removethe suction cup transducerfrom the water.

The transducerpositionmayneedto be adjusted. A mix of air and waterflowing around the transducer (cavitation) may be interferingwiththe interpretationof the sonar data. See your InstallationGuide for suggestions on adjusting the transducer position, height, and running angle.

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