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by rotating up out of the metal spring bracket without harming the transducer, or your boat. 
The transducer can be re-engaged by simply rotating the transducer down and snapping it 
back in place. (See Figure A) 

 

 

 
B.  Inside Hull Mount- The high speed transducer can be mounted inside the hull (without pivot 

assembly) using the proper two-part epoxy, such as Humminbird’s epoxy kit. Even though 
there is some loss of signal in shooting through the hull, your LCR will perform well with this 
type of installation. You cannot shoot through the hull of an aluminum boat. 

C.  Trolling motor Mount- This type of transducer is not supplied with your LCR. It  is designed to 

mount on the foot of a trolling motor. You may exchange your un-used high speed  
transducer for a trolling motor transducer. Call the Humminbird Customer Service 
Department. 

D.  Bronz Thru-Hull Mount- This transducer is not supplied with your LCR but for an additional 

cost you may exchange your un-used high speed transducer for a bronz thru-hull. The bronz 
thru-hull transducer has a threaded stem which installs through a hole drilled in the boat hull, 
leaving the housing exposed under the boat. This type of  installation must be used for many 
boats with in-board engines, because there is no suitable location on the transom away from 
the noise and turbulence created by the prop. A bronz thru-hull transducer should be installed 
by qualified personnel only. 
The LCR will operate well at high speeds with a properly mounted transducer. Remember, a 
transducer will not work transmitting through air or through air bubbles. 
 
 
 
1.  TRANSOM MOUNTING PROCEDURE 

 
Step 1. 
MOUNTING LOCATION- It is important that the transducer be mounted on the transom where 
water flow is in constant contact with the transducer. You may wish to observe the rear of the 
boat while it is moving through the water to determine the best mounting location. 
 
Step 2. 
BRACKET  INSTALLATION (Aluminum Boats)- To install the metal bracket on an aluminum  boat 
locate the template on the transom between rows of rivets, or ribs that are on the bottom of the 
boat. Align the template so that  the bottom corner of the template nearest the center of the 
transom is on the bottom edge of the transom. 
 

Summary of Contents for Piranha 3

Page 1: ......

Page 2: ...uding aluminum Please carefully consider the following before installing your transducer TRANSDUCER MOUNTING OPTIONS A Transom Mount The Humminbird high speed transducer allows the transducer element...

Page 3: ...bronz thru hull transducer has a threaded stem which installs through a hole drilled in the boat hull leaving the housing exposed under the boat This type of installation must be used for many boats...

Page 4: ...use a silicone sealant between the screwhead and bracket in order to prevent leaking See Figure C Step 2 BRACKET INSTALLATION Fiberglass Boats If your boat has a stepped transom located below and und...

Page 5: ...cally 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 pivo...

Page 6: ...the bracket Slide the O ring on to the headed pin and insert it through the two parts Assemble by screwing the x3 8 allen head screw into the end of the pin and tighten See Figure G Step 5 ANGLE ALLIG...

Page 7: ...h this type installation it is important that the transducer be mounted by someone familiar with the use of two part epoxy adhesives For this reason Techsonic Industries Inc will not be responsible fo...

Page 8: ...ye of the transducer The bubbles will disappear in a short time or can be removed by rubbing the transducer eye with your fingers while the transducer is in the water 4 If your instrument should fail...

Page 9: ...Install the mounting knobs and tighten snugly The unit can now be swiveled and tilted to any desired position...

Page 10: ...cket can also be mounted directly to the dash without the swivel mount however this method is not recommended since the unit cannot be rotated INSTALLING THE CABLES Your LCR comes equipped with Hummin...

Page 11: ...ole cover after determining the necessary wire length from the hole The power cable has a red lead to the positive post and the black lead to the negative post Install a 1 amp fuse between the red cab...

Page 12: ...l mount aside and drill the holes as marked 5 Mount the bracket using the mounting hardware supplied with your Dimension 3 Note Twist the bracket 90 degrees on the swivel base to access the mounting s...

Page 13: ...ater images on the Dimension 3 screen You should read this section and Section S Selecting Dimension 3 Functions as you first learn to use the Dimension 3 Doing so will ensure you make the most of its...

Page 14: ...utton controls the 2 position backlight Press LIGHT once to turn the backlight on dim pressing a second time will turn the backlight to bright Pressing a third time will turn the light off In either a...

Page 15: ...verse angle as shown below is as if you were forward and to the right of your boat looking back on the area you have covered Normal view is the reverse of this so objects to the right of your boat app...

Page 16: ...Screen with Reverse Angle activated shows the bottom that would normally be blocked...

Page 17: ...he SCREEN button once displays a front view much like using a rearview mirror Press it a second time for a side view like conventional 2dimensional sonar products display Press it again to return to t...

Page 18: ...d off by simply pressing ON OFF The menu Select System works in all three views although the following descriptions arc illustrated in the 3 4 view unless there are significant differences in operatio...

Page 19: ...he depth you have set DEPTH LIMIT MESSAGE As the bottom depth approaches the depth limit 240 a depth limit message appears in front and 3 4 views or when a menu item such as zoom or depth range is adj...

Page 20: ...ted for depth so shallow fish don t appear linger than deeper fish 5 Using Zoom Factory setting OFF Zoom provides an up close view To activate it select ZOOM Press the Up and Down arrows to move the Z...

Page 21: ...and the same view after zoom is activated Vertical bars also indicate zoomarea in the straight on view Horizontal lines indicate zoom area in the side view...

Page 22: ...rter vertical bar To use this feature select BOTTOM HARDNESS and press ON OFF NOTE Bottom Hardness is factory set for average bottom hardness You can adjust the scale so a known bottom will read as ha...

Page 23: ...hour or knots and whether temperatures are displayed in fahrenheit or centigrade 3 You can adjust screen contrast to optimize viewability for your mounting location To do any of these press the SCREE...

Page 24: ...ON OFF until the unit you want is displayed To adjust the contrast of the Dimension 3 display press the SELECT button until the box before CONTRAST is blacked in Then press the Up or Down arrow until...

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