Humminbird LCR4 ID manual

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To install the metal bracket on a fiberglass boat, locate the template on the transom in the same manner as for an aluminum boat. (See Figure C)

NOTE: On boats with more than 15 degree deadrise angle it may be necessary to mount the transducer slightly off parallel with the water level. (See Figure E)

Mark and drill the three 9/64” dia. holes as shown on the template. Attach the metal bracket using the three #10 self threading screws supplied. Be sure to align the holes so that they are centered vertically in the three slots found in the bracket. It is important to use a silicone sealant between the screwhead and bracket in order to prevent leaking.

Step 3.

TRANSDUCER PIVOT ASSEMBLY- Assemble the pivot to the transducer main body using the two ¼”x5/8” allen head screws, two 3/8” tooth washers and two, ¼” square nuts. Make sure the tooth washers are sandwiched between the transducer main body and the pivot. The square nuts are trapped inside the pivot and will not rotate as the allen head screws are tightened. HOWEVER, DO NOT TIGHTEN AT THIS POINT. (See Figure F)

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Contents Page Table of Contents Transducer Mounting Procedure Transducer Mounting OptionsTransom Mounting Procedure Page Page Page Inside Hull Mounting Procedure Page Installing the LCR Installing the Cables Other Mounting OptionsPage Installation Test the InstallationIntroduction Theory of OperationUsing the LCR Using the LCR How Does Total Screen Update Work? Total Screen UpdateWhat is Total Screen Update? How To Use Total Screen UpdateOperational Instructions LCRUsing the LCR Automatic or Manual Mode How To Use Zoom What Zoom DoesSome Additional Things You Should Know About Zoom Bottom LockFish Alarm Bottom AlarmUsing the LCR Reading will not be seen while in the manual mode Additional Information Some additional things you should know about the LCRCaring for Your LCR Learning to USE Your LCR StepUsing the LCR Using the LCR Learning to Read the Display Using the LCR Maintenance and Warranty MaintenanceTroubleshooting Nothing happens when I turn the unit onThere is no bottom reading visible on the display Unit comes on before I press POWER, and wont turn off Humminbird ONE Year Full Warranty Service Policy Customer Support