Humminbird HDR 650 manual One click too high, Trailingedge One click too low Leading edge

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6.Adjust the initial angle of the transducer from back to front by rotatingthe transducer until the side seam on the transduceris almost parallelwith the bottom of the boat, one click at a time in either direction (see the illustration Adjusting the Initial Transducer Angle).

Adjusting the Initial Transducer Angle

One click too high

Correctlyaligned (transducerside seam aligned with boat bottom)

Trailingedge

One click too low

Leading edge

7.Adjust the transducer assemblyvertically,untilthe seamon the leading edge of the transducer (the edge closestto the transom of the boat) is level and just slightly below the hull (see the illustration Adjusting the Transducer Mounting Position).

NOTE: The transducer has a natural downwardslant of 4-5 degrees from leading edge (closest to the boat transom) to trailing edge (farthest away from the boat). Looking at the back of the transducer, the seam should be slightly below the bottom of the hull.

8.Continue to adjust until the bracket is also level from port to starboard (horizontally level as you look at the transducer from behind the boat (see the illustration Leveling the Mounting Assembly Horizontally).

17Transom Mount Transducer Installation

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Contents HDR 650 Installation Operations Manual Thank You Table of Contents Maintenance How Sonar Works Installation Overview Installing the HDR Cutting the Mounting Hole Locating the HDR 650 Mounting PositionHDR Face Plate Trim Ring Tabs Customizing and Assembling the HDRInstalling the HDR Collar Gasket DashboardViewHDR 650 Control Head Installing the Buzzer Connecting to the Power SupplyBuzzer Inline Fuse Holder Installing the TransducerTransducer Installation Overview Locating the Transducer Mounting Position Transom Transducer InstallationRivets Strakes TransomHull StepRibDeadrise Angle LevelPreparing the Mounting Location Assembling the Transducer and Initial Mounting 4th hole Mark InitialDrill Holes Bead Alignment Number Transom Angle Measured Distance Transom Angle in degrees MeasuredWeight DistanceKnuckle Beads Ratchet RibBead Ratchet Snap the pivot arm down into place Trailingedge One click too low Leading edge One click too highRouting the Cable Transom Mount Transducer Installation Test and Finish the Installation Connecting the CableStoring Excess Cable Gathered at one location as shown See the illustration Storing Excess CableLevel Seam aligned with boat hull Rib Ratchet BeadTransom Mount Transducer Installation Locking Down the Transducer Optional Inside the Hull Transducer Installation Positioning the Transducer and Preferred Mounting Area Trial InstallationRouting the Cable Make sure the position of the transducer is marked Permanently Mounting the TransducerTrolling Motor Transducer Options Trolling Motor Transducer InstallationOperating the HDR Units Shallow Alarm Icon IndicatesHDR 650 Control Head DepthKey Functions Overview Power On/OffSet Units UnitsSet Shallow Alarm Icon Shallow AlarmSet Deep Alarm Icon Deep AlarmPostiveOffset NumberIcon NegativeOffset NumberIconMaintenance HDR 650 MaintenanceTransducer Maintenance HDR 650 Doesnt Power Up TroubleshootingNo Continuous Depth Display in Very Shallow Water No Bottom Reading on the DisplayScreen Fades, Images are not Sharp Bottom Reading Disappears During a Hard TurnYear Limited Warranty Humminbird Service Policy Returning Your Unit for Service Specifications Specifications Contact Humminbird