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Lowrance electronic X51 - page 1
Pub. 988-0151-59A X51 Pro Fish-finding & Depth Sounding Sonar Installation and Operation Instructions ...
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Lowrance electronic X51 - page 2
Copyright © 2008 Navico, Inc. All rights reserved. Lowrance ® is a registered tradem ark of Navico, Inc. Marine-Tex ™ is a trademark of I llinois Tool Works Inc. Lowrance Electron ics may find it necessary to chang e or end our policies, regulat ions, and special offers at an y time. We reserve th e right to do so with out notice. All features ...
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Lowrance electronic X51 - page 3
1 Table of Contents Capabilities and Specif ications: X51 Pro ..................................... 2 Section1: Installation ................................................................ 3 Installation Preparations .............................................................. 3 Transducer Installation ........................................... ...
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Lowrance electronic X51 - page 4
2 Capabilities and Specifications: X51 Pro General Case size: ........................... 5.8" H x 4.3" W x 2.5" D (14.7 cm H x 10.8 cm W x 6.6 cm D). Sealed, waterproof; suita ble for saltwater use. Display: ............................ High-contras t Film SuperTwist LCD. Diagonal viewing area: 4.0" (10.2 cm). Resolution: ..... ...
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Lowrance electronic X51 - page 5
3 Section 1: Installation Thank you for buying a Lowranc e ® sonar! Your unit is a high quality sonar designed for both professi onal and novice fishermen. All Lowrance sonars have an autom atic mode that finds and disp lays the bottom, fish, underwater structure and more – right out of the box. All you have to do is press the on ( PWR ) key. NO ...
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Lowrance electronic X51 - page 6
4 installation m ethods is right for your boat. Us e extreme care i f mounting the transducer inside the hull, b ecause once it is ep oxied into position, the transduc er usually cannot be rem oved. Remember, the transducer installati on is the most critical part of a sonar installation! Your Skimmer transducer typically comes packaged with a o ne- ...
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Lowrance electronic X51 - page 7
5 NOTE: Some aluminum boats with strak es or ribs on the outsid e of the hull create l arge amounts of tur bulence at high s peed. These b oats typically hav e large outboard m otors capable of propel ling the boat at speeds faster than 35 mph. Typically, a good transom loc ation on aluminum boats is between the ribs closest to the engine. 3. The t ...
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Lowrance electronic X51 - page 8
6 How low should you go? For most situations, yo u should install your Skimm er transducer so that its centerline is level with the bott om of the boat hull. This wil l usually give you the best c ombination of smooth water flow an d protection fr om bangs and bumps. Align transducer centerline with hull bottom. However, there are t imes when you m ...
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Lowrance electronic X51 - page 9
7 However, the shoot-thru -hull installation does have its drawbacks. First, some loss of s ensitivity does occ ur, even on the best hulls. This varies from hull to hull, even from different i nstallations on t he same hull. This is caused by differenc es in hull lay-up and construction. Second, the transducer an gle cannot be adj usted for the bes ...
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Lowrance electronic X51 - page 10
8 If the transducer's face isn't parallel with th e ground, remove th e transducer and ratc hets from the bracket. P lace the ratchets into t he holes in the bracket with the let ter "B" aligned with the dot stam ped in the bracket. Reassemble the transducer and bracket and place them against the transom. Again, check to see if ...
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Lowrance electronic X51 - page 11
9 Mark the center of each slot f or the mounting screw pilot ho les. You will drill one hol e in the center of each slot. Drill the holes using the #29 bit (for the #10 screws). Position transducer mount on tr ansom and mark mounting holes. Side view shown at left and seen from above at right. 5. Attaching transducer to transom. Rem ove the transdu ...
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10 Align transducer centerline with hull bottom and attach to t ransom. 6. Route the transducer cab le through or over the transom t o the sonar unit. Mak e sure to leave some slack in the cable at the tra nsd ucer . If possible, route the transducer cable away from other wiring on the boat. Electrical noise fr om the engine's wiring, bilge pu ...
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Lowrance electronic X51 - page 13
11 Attach motor mounting bracket to transducer. 2. Slide the adjustable strap sup pli ed with the T MB-S through the slot in the transducer brack et and wrap it ar ound the trolling motor. Position the transduc er to aim straight down when the m otor is in the water. Tighten the strap securely. 3. Route the transducer cable alon gside the trolling ...
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Lowrance electronic X51 - page 14
12 Transducer Orientation and Fish Arches If you do not get good fish arches on your display, it could be beca use the transducer is n ot parallel with the ground when the boat is at r est in the water or at slow trolling spee ds. If the arch slopes up – but not ba ck down – then the front of the transducer is to o high and needs to be lowered. ...
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Lowrance electronic X51 - page 15
13 hours, fill the rem aining space wit h polyester res in. When the j ob is finished, the hull is watertigh t and structurally sound. Remember, the sonar signal must pass through solid fiberglass. Any air bub bles in the fiberglass or the epo xy will reduce or eliminat e the sonar signals. Shoot-thru-hull transducer locations for high speed or tro ...
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14 If you can't get a n acceptable bo ttom signal, try turn ing up the sensitivity by three or five keystr okes and then move the transducer aro und o nce m ore. I f you fin d a s pot t hat w orks , mar k it a nd move on to step 4. If you have to turn up sensitivity by more than five keystrokes to get a good signal, the transducer should be mo ...
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Lowrance electronic X51 - page 17
15 100 grit sandpaper. The sanded hull area should b e about 1-1/2 times the diameter of the transducer. The s urface of the hull must b e flat so the entire transducer face is in c ontact with the hull prior to bonding. After sanding, c lean the hull and transducer with rub bing alcohol to remove any sandin g debris. Epoxy transducer to hull . WAR ...
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Lowrance electronic X51 - page 18
16 the transducer should b e parallel with the hu ll, with a minim um amount of epox y between the hull an d transducer. 4. Apply a weight, such as a brick, to hold the transducer in place while the epoxy cures. Be carefu l not to bump the transducer while the epoxy is wet. Leave the weight in place for a minimum of three hours. Allow the epoxy to ...
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Lowrance electronic X51 - page 19
17 Power and transducer connections for the X51 Pro sonar unit (direct battery connection shown). CAUTION: Do not use this pr oduct without a 3 -amp fuse wired into the power cable! Failure to use a 3 -amp fuse will void your warranty. This unit has reverse polarity protec tion. No damage wi ll occur if the power wires are reversed . However, the u ...
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Lowrance electronic X51 - page 20
18 Bracket Installation Mount the unit in any conve nient location, provid ed there is clearance when it’s tilted for th e best viewing angle. You should also ma ke sure there is eno ugh room behind the unit to attac h the power/tra nsducer cable. (See t he following draw ings, which show the dimensions of a mounted X5 1 Pr o.) Holes in the brack ...
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Lowrance electronic X51 - page 21
19 slack for tilting and turning the unit and attach ing the connector. (The snug fit of the push-on waterpr oof connector requires some force to attach.) Align the bracket over the cable hol e with the cable sl ots facing away from you and fit the cable through th e slots. Fasten the bracket to the dash using the two screw holes. Attach the unit t ...
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Lowrance electronic X51 - page 22
20 Installing the Batterie s Release the latch on the front of the case. Open the case a nd install eight AA batteries in the battery compartment. Aft er installing the batteries, plug the sonar unit's power cable into the battery compartment socket. Route the other end o f the cable through the opening under the m ounting bracket and clos e t ...
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Lowrance electronic X51 - page 23
21 Section 2: Operation Keyboard Numbers in the follow ing photo correspond to the following key explanations: X51 Pro 1. PWR/CLEAR This key appears in the manual text simply as PWR . Press this key to t u r n t h e u n i t o n a n d o f f . I t a l s o clears menu selections and the menus from the screen. To clear a menu from the screen, press PWR ...
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Lowrance electronic X51 - page 24
22 Menus The menu keys acc ess these featur es, allowing yo u to customize t he unit to your par ticular needs a nd water co nditions. All you have to do to leave o ne menu and enter an other is press MENU repeat edly. If you ever get lost in the menus, simply pr ess the PWR key. This clears the menus from the screen. Menus change dependi ng on the ...
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Lowrance electronic X51 - page 25
23 Chart Scroll In normal operation, the sonar chart wi ll scroll from ri ght to left across the screen. You can st op the chart fro m scrolling across the scree n. This is useful when you w ant to "freeze" the picture to study it more c losely. To stop the chart, press MENU until the S CROLL S PEED menu appears. Use the DOWN ARROW to s e ...
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Lowrance electronic X51 - page 26
24 Depth Range Zoom When turned on, the unit automat ically adjusts the depth range a ccording t o water con ditions. Whe n in auto ra nge mode, it always keeps the bottom displayed in the lower portion of the screen. You can over-ride the automatic depth range control and manually select a depth range. To do this, press MENU until the R ANG E Z OO ...
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Lowrance electronic X51 - page 27
25 When you Zoom wh ile the unit is in manual depth Range Zoom mode, you can select one of 13 pre-set Zoom Sizes. This lets you enlarge some other p articular segment of the water column. Zoom Size menu with the 5-15 foot zoom selected. The boat is in 28 feet of water, but the screen has zoomed in on the water column from 5 to 15 feet below the sur ...
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Lowrance electronic X51 - page 28
26 To adjust Sensitivity, pr ess MENU until the S ENSITIVITY A DJU STMENT menu appears. Press UP A RROW to increase the sensitivity , DOWN ARROW t o d e c r e a s e i t . W h e n i t ' s s e t a t t h e d e s i r e d l e v e l , press PWR to clear the menu. NOTE: If you want to change the sens itivity in Manual Mode, first turn off Auto Sensit ...
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Lowrance electronic X51 - page 29
27 Fish I.D . ™ The Fish I.D. feature displays fish symbols in pla ce of the actual fish echoes. There are thr ee symbol sizes: small, medium and large. At left, underwater scene in normal fish arch mode. Right, F ish I.D. menu with the feature turned on. F i s h I . D . i s a n e a s i e r w a y f o r a s o n a r novice to recogn ize a fishy sig ...
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28 To turn it on, press MENU until the F ISH ID menu appears. Press UP ARROW to s elect T RACK O N , then press PWR . T o t u r n i t o f f , r e p e a t t h e above steps, but press DOWN A RROW to select O FF . (If you want to turn off FishTrack depths but leav e Fish I.D. on, press DOWN A RROW to select O N , then pr ess PWR . ) R e me m b er , F ...
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Lowrance electronic X51 - page 31
29 To turn off the fish alarm without tu rning off fish symbols, press MENU DOWN until F ISH A LA RM appears. Press DOWN ARROW to select O FF , then press PWR to clear the menu. Repeat the above steps to turn the alarm back on, but press UP ARROW to select O N before c learing the menu. Depth Alarms The depth alarm s are trigger ed only by the b ot ...
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30 Backlight The display is backlit for night use. To turn the bac klight on or off, press MENU repeatedly until the B A CK L IGHT menu appears. Press UP ARROW to turn the light on or the DOWN ARROW to turn it off. Display Contrast To adjust the contrast, press MENU DOWN until th e D ISPLAY C ONTRAST menu appears. To decrease screen contrast, press ...
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Lowrance electronic X51 - page 33
31 Simulator This unit has a built-in simula tor tha t shows a simulated bottom signal with fi sh signals. This lets you practice with the unit as if you were on the water; all fea tures and func tions of th e unit ar e usable. To use the simulator, press MENU DOWN repeated ly until the S IMULATOR menu appears. Press UP A RROW to turn it on, and pr ...
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Lowrance electronic X51 - page 34
32 Index A Accessories, 18 Alarms, 28 Fish Alarm, 28, 29 Antenna, 35 ASP (Advance d Signal Proce ssing), 13, 28 B Backlights / Lighting, 2, 30 Batteries, 3, 16, 17, 19, 20, 30, 33 , 34, 35 C Contrast, 2, 3 0 D Depth Alarm s, 29 Depth Range, 3, 13, 14, 24, 25, 34 F Fish Alarm, 28, 29 Fish Depths, 27 FishTrack ™ , 27 Frequency, 2 G Grayline ® , 26 ...
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Lowrance electronic X51 - page 35
33 Troubleshooting Unit won't turn on: 1. Check the power cable's con nection at the unit. Als o check the wiring. 2. Make certain the power cab le is wired properly. The red wir e connects to the positive b attery term inal, black to negative or ground. 3. Check the fuse. 4. Measure the battery volt age at the unit's power connector ...
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Lowrance electronic X51 - page 36
34 Bottom echo disapp ears at high sp eeds or erratic dig ital reading or weak bottom echo while boat is moving 1. The transducer may be in turbu lent water. It must be mounted in a smooth flow of w ater for the sonar to work at a ll boat speeds. 2. Electrical noise from the boat's motor can interfere with th e sonar. This causes the sonar to ...
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35 NAVICO FULL ONE- YEAR WARRANTY "We," "our," or "us" refers to NAVICO, INC., the manufacturer of th is product. "You" or "your" refers to the first person who purc hases this product as a consumer ite m for personal, family or household use. We warrant this product against defects or malfunctions ...
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36 How to Obtain Service… …in the USA: We back your in vestment in qua lity products with quick, expert service a n d g e n u i n e L o w r a n c e p a r t s . I f y o u ' r e i n t h e U n i t e d S t a t e s a n d y o u have technical, return or repair questions, please contact th e Factory Customer Service De partment. Before any prod u ...
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Lowrance electronic X51 - page 39
Accessory Ordering Information for all countries To order Lowrance accessories such as power cables or tra nsducers, please contact: 1) Your local marin e dealer or consumer electronics store. M ost quality dealers that handle m arine electron ic equipment or oth er consumer electronics shou ld be able to assist you with th ese items. To locate a L ...
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Lowrance electronic X51 - page 40
Visit our web site: Lowrance Pub. 988-0151- 59A © Copyright 2008 All Rights Rese rved Printed in USA 04 29 08 Navico ...
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