User Guide

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MAINTENANCE
To keep both your HDR 610 and your transducer working properly, perform the following
maintenance tasks as needed.
HDR 610 MAINTENANCE
If your HDR 610 unit comes into contact with salt spray, simply wipe the affected surfaces with a
cloth dampened in fresh water. Do not use a chemical glass cleaner on the lens, as chemicals in
the solution may cause cracking in the lens. When cleaning the LCD protective lens, use a
chamois and non-abrasive, mild cleaner. Do not wipe while dirt or grease is on the lens. Be careful
to avoid scratching the lens.
WARNING: Never leave your HDR 610 in a closed car or trunk; the extremely high
temperatures generated in hot weather can damage the electronics.
TRANSDUCER MAINTENANCE
If your boat remains in the water for long periods of time, algae and other marine growth can
reduce the effectiveness of the transducer. Periodically clean the face of the transducer with hot
water. Pivoting the transducer up in the bracket may allow better access for inspection or
cleaning.
If your boat remains out of the water for a long period of time, it may take some time to wet the
transducer after it is returned to the water. Small air bubbles can cling to the surface of the
transducer and interfere with proper operation. These bubbles will dissipate with time, or you may
wipe the face of the transducer with your fingers after the transducer is in the water.
TROUBLESHOOTING
Before contacting the Humminbird® Customer Resource Center, please read the following section.
Taking the time to review these troubleshooting guidelines may allow you to solve a performance
problem yourself, and therefore avoid sending your unit back for repair.
NOTE: Do not attempt to repair the HDR 610 yourself, as there are no user serviceable parts
inside, and special tools and techniques are required for reassembly in order to maintain the
waterproof integrity of the housing. Repairs should be performed only by authorized
Humminbird® technicians.
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3. To enable Keel Offset, press the SET key until the KO icon is displayed on the screen.
4. The available settings are +10 to -10 units. The default setting of the unit is Off, which is
displayed as zero (0.0). From the default setting of 0.0, use the DOWN Arrow key to enter
a negative (-) number (for depth measurements from the keel of the boat); use the UP
Arrow key to enter a positive (+) number (for depth measurements from the waterline).
5. After your selection is made, wait 5 seconds for the unit to return to normal operation. The
KO icon should now be visible.
EXAMPLE: The following figures depict a scenario where the Keel Offset has been set to -2
feet. The third figure shows the return to normal operation with the updated depth readout.
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