Humminbird Essential Guide for Setting Up Your Fish Finder: HDR 650 Transom Angle and Bead Alignment

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Bead Alignment

Number

Transom Angle (°)

Measured Distance (x)

1

4

2

5

3

1

4

2

5

3

1

-2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

0.0 cm

1.1cm

2.5 cm

4.3 cm

5.9 cm

7.6 cm

9.3cm

11.1cm

12.9cm

14.9cm

16.9cm

0“

1/2“

1“

1 5/8“

2 3/8“

3“

3 5/8“

4 3/8“

5“

5 7/8“

6 5/8“

Measuring the Transom Angle

Plumb line

Transom Angle in degrees

(°)

MeasuredWeight Distance (X)

1b. If you do not know your transom angle, measure it using a plumb line (weighted nylon string or monofilament line) exactly 12 inches long. Hold the top of the plumb line against the top of the transom with your finger, and wait until the line hangs straight down. Using a ruler, measure the distance from the bottom of the plumb line to the back of the transom, then use the chart.

NOTE: It is important to take your measurement in the location shown in the illustration Measuring the Transom Angle, from exactly 12 inches down from the top of the transom.

2.Place the two ratchets, one on either side of the transducer knuckle, so that the beads on each ratchet line up with the desired position number on the knuckle (see the illustration Transducer Knuckle Positions). If you are setting the ratchets at position 1, the beads on each ratchet will line up with the rib on the transducer knuckle to form one continuous line on the assembly (see the illustration Ratchets Placed in Position 1).

NOTE: The ratchets are keyed; make sure that the square teeth on each ratchet face the square teeth on the transducer knuckle, and the triangular teeth face outward.

Hold the ratchets on the transducerknucklewith one hand and fit the pivot arm over them until it snaps into place with the other hand. Refer to the illustration Fitting the Mounting Bracket Over the Ratchet.

Transom 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 Locating the HDR 650 Mounting Position Cutting the Mounting HoleCustomizing and Assembling the HDR HDR Face Plate Trim Ring TabsInstalling the HDR Collar Gasket DashboardViewHDR 650 Control Head Installing the Buzzer Connecting to the Power SupplyBuzzer Installing the Transducer Inline Fuse HolderTransducer Installation Overview Rivets Strakes TransomHull Transom Transducer InstallationLocating the Transducer Mounting Position StepRibLevel Deadrise AnglePreparing the Mounting Location Assembling the Transducer and Initial Mounting 4th hole Mark InitialDrill Holes Transom Angle in degrees MeasuredWeight Distance Bead Alignment Number Transom Angle Measured DistanceKnuckle Beads Ratchet RibBead Ratchet Snap the pivot arm down into place One click too high Trailingedge One click too low Leading edgeRouting the Cable Transom Mount Transducer Installation Storing Excess Cable Gathered at one location as shown Connecting the CableTest and Finish the Installation See the illustration Storing Excess CableLevel Seam aligned with boat hull Bead Rib RatchetTransom Mount Transducer Installation Locking Down the Transducer Optional Inside the Hull Transducer Installation Trial Installation Positioning the Transducer and Preferred Mounting AreaRouting the Cable Permanently Mounting the Transducer Make sure the position of the transducer is markedTrolling Motor Transducer Installation Trolling Motor Transducer OptionsHDR 650 Control Head Units Shallow Alarm Icon IndicatesOperating the HDR DepthPower On/Off Key Functions OverviewUnits Set UnitsShallow Alarm Set Shallow Alarm IconDeep Alarm Set Deep Alarm IconNegativeOffset NumberIcon PostiveOffset NumberIconMaintenance HDR 650 MaintenanceTransducer Maintenance Troubleshooting HDR 650 Doesnt Power UpScreen Fades, Images are not Sharp No Bottom Reading on the DisplayNo Continuous Depth Display in Very Shallow Water Bottom Reading Disappears During a Hard TurnYear Limited Warranty Humminbird Service Policy Returning Your Unit for Service Specifications Specifications Contact Humminbird