Humminbird LCR 120 Operation Manual Download | Manualshive

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The transducer cannot transmit through air. The water purges any air from
between the transducer and the hull and fills any voids in the coarse
fiberglass surface.

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Summary of Contents for LCR 120

Page 1: ......

Page 2: ...our number listed in the Customer Support section INSTALLATION OVERVIEW Your Humminbird fishfinder consists of two primary components to install the control head and the transducer The control head c...

Page 3: ...should the boat strike debris in the water or when trailering As an alternative to transom mounting it is possible on many fiberglass hulled boats to glue the transducer on the inside of the boat hull...

Page 4: ...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...

Page 5: ...minbird fishfinder The installation guide included on the next few pages provides detailed step by step instructions for installation of the control head and transducer For transom mount transducer in...

Page 6: ...the propeller s This turbulent water is normally confined to areas immediately aft of ribs strakes or rows of rivets on the bottom of the boat and in the immediate area of the propeller s Figure 1 On...

Page 7: ...g a 5 32 4mm bit drill the two holes to a depth of approximately 1 3cm On fiberglass hulls it is best to start with a smaller bit and use progressively larger drill bits to reduce the chance of chippi...

Page 8: ......

Page 9: ...urther adjustment may be necessary to refine the instillation after high speed testing 1 First adjust the pivot angle of the transducer body so its length is parallel with the length of hull of the bo...

Page 10: ...mounting bracket Drill this hole and install the screw after final testing and adjustments have been completed...

Page 11: ...erference If the cable is too short extension cables are available to extend the transducer cable up to a total of 50 15 m Call Humminbird Customer Support for more information Follow these steps to r...

Page 12: ...unting Location Begin the transducer installation by determining where inside the hull to install the transducer Consider the following to find the best location Observe the outside of the boat hull t...

Page 13: ...The transducer cannot transmit through air The water purges any air from between the transducer and the hull and fills any voids in the coarse fiberglass surface...

Page 14: ...dry the mounting surface If the surface is excessively rough it may be necessary to sand the area to provide a smooth mounting surface Ensure the mounting area is clear and dry 3 Mix an ample quantit...

Page 15: ...supplied hole cover The mounting surface should be adequately supported to protect the fishfinder from excessive wave shock and vibration and provide visibility while in operation The mounting area sh...

Page 16: ...fuse in the connection If you must wire the control head directly to a battery be sure to install an inline fuse holder...

Page 17: ...mounting surface mark and drill a 1 25mm hole centered between the four mounting holes Figure 22 Note if the cables must pass through the mounting surface at a different location drill the 1 25mm hol...

Page 18: ...Optional If the cables pass outside the mounting bracket install the hole cover over the hole and fasten in place using the two 8 x 7 8 22mm wood screws Figure 24...

Page 19: ...ll the excess cable from beneath the mounting surface so the connector holder aligns with the mounting holes on the front of the mounting bracket Figure 27 3 Snap the support plate to the rear of the...

Page 20: ...rmal operation unless you choose another option If you do not press any button before the timer reaches 0 the normal operation screen is displayed If the boat is in water sonar data appears If the bot...

Page 21: ...d with the instructions on the following page 1 Set the gimbal bracket in the mounting surface 2 Mark 1 8 holes for the mounting screws 3 At least 3 behind the bracket drill a 5 8 hole to run the cabl...

Page 22: ...n this manual for tips from the Hummingbird engineers If you don t find the solution there call out Customer Service Hotline Section 4 Using the LCR 120 This section provides complete information on o...

Page 23: ...e features by actual operation or when using the simulator POWER Press the button once to turn the LCR 120 on the press again to turn the unit off When the unit is off keeping POWER pressed for about...

Page 24: ...en use Zoom you can select it once then switch it on and off simply by pressing ON OFF ID 1 Selecting ID Factory Setting Fish symbols ID identifies targets not attached to the bottom and displays them...

Page 25: ...cting Sensitivity Factory Setting 0 The LCR 120 automatically adjusts to the proper amount of sensitivity for conditions i e depth You can bias the setting or 5 levels to suit your personal taste Incr...

Page 26: ...hirping sound when bottom is shallower than you defined This is very handy for alerting you to shallow water or helping you maintain position over structure Fish Alarm 5 Enabling Fish Alarm Factory Se...

Page 27: ...e return is relative to the size of the fish Zoom 6 Using Zoom Range Factory Setting Off Zoom Range provides an up close view To activate it select ZOOM RANGE and press ON OFF The Zoom view begins ini...

Page 28: ...wn to stay on the bottom To use this feature select BOTTOM LOCK and press ON OFF The range of the display is shown when Bottom Lock is on This is an ideal feature for finding structure or locating fis...

Page 29: ...adjust it select DISPLAY SPEED and press the Up arrow button for a faster setting or the Down arrow for a slower setting In general higher Display Speed settings provide faster updates while slower D...

Page 30: ...bottom is not blacked in This lets you see a second return which is preferred by some fisherman because the width of the second echo can indicate bottom hardness Trip Log 10 Trip Log Factory Setting...

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