Humminbird 128 manual Step Four Mount the Transducer to the Transom

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INSTALLATION

TRANSOM INSTALLATION

Step Four - Mount the Transducer to the Transom

1.Apply silicone sealant to the mounting holes drilled into the transom.

2.Align the transducer assembly with the drilled holes in the transom (Figure 8).

3.Use either a flat head screwdriver, a 5/16" (8mm) hex driver, or a 5/16" (8mm) socket to mount the assembly. Using the two #10 – 1”

(25mm) long slotted hex head screws, mount the transducer assembly to the transom as shown. Do not fully tighten the mounting screws in order to vertically adjust the transducer. Snap the pivot down into place.

Step Five - Adjust the Running Position of the Transducer

The bracket allows height and tilt adjustment, the pivot screws allow angular adjustment. Initially, adjust the transducer as described in the following paragraphs. Further 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 boat. Then pivot the transducer down so the rear is about 1/4 inch (6mm) lower than the front (Figure 9).

2.Fully tighten the two pivot screws using the Allen wrenches. It may be necessary to retighten the pivot screws after the initial use as the plastics may still be seating to the lock washers.

3.Adjust the height of the assembly so the face of the transducer is 3/16" (4.5mm) beneath the lower edge of the transom (Figure 10). Mark the position of the mounting bracket on the transom with a pencil.

4.Force the pivot to the up position to gain access to the mounting screws. Assure the transducer location has not changed, then fully tighten the two mounting screws (Figure 11). Snap the pivot back down.

Confirm the pivot angle has not changed.

Note: A third screw location is provided for the

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

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Contents Page Parts Supplied AccessoriesInstallation Overview Determining How to Mount the Transducer Alternate Transducers and Mounting Methods Portable MountingTrolling Motor Mounting Thru-Hull MountingBeginning Installation Transducer ExchangeTransom Installation Step One Determine Where to Mount the TransducerStep Two Drill the Mounting Holes Step Three Assemble the TransducerStep Five Adjust the Running Position of the Transducer Step Four Mount the Transducer to the TransomStep Six Route the Cable Step Two Test the Mounting Location Inside the Hull InstallationStep One Determine the Mounting Location Step Three Permanently Mount the Transducer Step Two Connect the Power Cable to the Boat Control Head InstallationStep One Determine Where to Mount Step Three Drill the Mounting Holes Step Four Run the CablesStep Five Assembling the Connector Holder Your Humminbird is now ready for operationTest the Installation Testing the Installation Interpreting the ON-SCREEN Information Simulator OperationWhat YOU see ON-SCREEN Page Control Functions Menu Functions SenstivityDepth Range Zoom Depth Alarm Fish AlarmUsing Diagnostic Fish ID