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INSTALLATION PREPARATION 

INSTALLATION OVERVIEW 

 

Determining How to Mount the Transducer 

 

Your Humminbird fishfinder includes a standard 
transducer. This transducer can be mounted on the 
transom of the boat or bonded to the inside of a fiberglass 
hull boat. 

 

The transom installation, which is the most widely used, 
places the transducer on the outside of the boat hull. This 
technique produces the least signal loss, and provides a 
way to adjust the transducer after installation. The 
mounting hardware included is designed to protect both 
the boat and the transducer 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. Since fiberglass has similar 
sonar characteristics as water, the sonar signal can 
pass through the boat hull with minimal loss. The hull 
of the boat must be single layer construction (not 
double-hulled) Also, any air trapped in the lamination 
of the fiberglass would prevent the sonar signal from 
passing through. 
 
Inside the hull installations require no holes be drilled 
into the boat and through experimentation, high-speed 

operation comparable to transom mounting can be achieved. Two-part slow cure 
epoxy (not included) is required to glue the transducer in place. 

Summary of Contents for LCR W

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: ...a cable as far away from each other as possible for example on opposite sides of the boat After you have determined the best location for your LCR W proceed with the following instructions Drill a 3 5...

Page 22: ...nder your boat If your boat is moving an accurate depiction of the terrain you have just covered is created on screen Increase your boat speed to ensure that the transducer remains in contact with tur...

Page 23: ...display to satisfy any sonar need SIMULATOR OPERATION The LCR W contains a simulator which allows you to use the unit as if you were on the water This simulator is invaluable for learning how to opera...

Page 24: ...t the top of the display is the Zero line This represents the surface of the water The Zero line will always have a gap which moves as the screen updates This gap lets you know that the display is upd...

Page 25: ...d return is shown in the figure below Some users use this second return as an indicator when setting the sensitivity bias If a target is detected between the surface and the bottom it is displayed as...

Page 26: ...next smaller adjustment within the menu All menus use the same general layout as shown in the sample menu The heading of the menu is at the top The area at the bottom is controlled by the UP and DOWN...

Page 27: ...may choose to control this range adjustment manually By pressing the UP and DOWN arrow buttons you can select manual operation meaning the unit will no longer adjust the depth range automatically The...

Page 28: ...n use the zoom range will be 60 Pressing the UP or DOWN arrow button enables zoom and adjusts the zoom window to the desired depth The upper and lower limits are shown on screen and the and the digita...

Page 29: ...object or suspended debris Any object not connected to the bottom is normally a fish and is portrayed as a fish symbol The strength of the reflected sonar signal from a target is a good indicator of...

Page 30: ...g provides a time distance calculation based on input from the optional speed accessory The timer is started when the unit is first powered and distance information is collected to provide elapsed dis...

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