Garmin 90-140 Manuale Utente

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Fishfinder 90/140 Owner’s Manual 
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To mount the transducer on a transom:
1.   Position the transducer mount at the selected 
transom location. Make sure the transducer is 
parallel with the water line. Mark the center locations 
of each hole on the transducer mount. (See the 
figures on the next page.)
2.   Using a 5/32" bit, drill the pilot holes approximately 
1" (25 mm) deep at the marked locations. To avoid 
drilling the holes too deep, wrap a piece of tape 
around the bit at 1" from the point of the bit. 
3.   Apply marine sealant to the 5 x 30 mm screws. 
Attach the transducer assembly to the transom 
using the 5 x 30 mm screws. Adjust the transducer 
assembly to extend beyond the bottom of the 
transom approximately 1/8" (3 mm) on fiberglass 
hulls or 3/8" (10 mm) on aluminum hulls. Adjust the 
transducer assembly to be aligned parallel with the 
water.
4.   Tighten the 10-32 locking nut until it touches the 
mounting bracket, and then tighten 1/4 turn more. 
(Do not overtighten.)
5.   Place the first cable clamp on the transducer cable 
approximately one third of the distance between 
the transducer and the top of the transom. Mark 
the location. Using a 1/8" bit, drill a pilot hole 
approximately 3/8" (10 mm) deep.
6.   Attach the cable clamp using a 4 x 12 mm screw. 
Coat the screw with marine sealant before 
installation. Repeat steps 5 and 6 using the other 
cable clamp. 
7.  Route the transducer cable, as needed, to the 
Fishfinder. DO NOT CUT THE CABLE. Avoid routing 
the cable with electrical wires or other sources of 
electrical interference.