Garmin Fishfinder 340C Owner's Manual page 18

I F 340C >
NSTALLING THE ISHFINDER
Tool List (not included)—drill, 3/8" wrench or socket, 5/32" and
1/8" drill bits, masking tape, #2 Phillips screwdriver, and marine
sealant.
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.
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.
12
M T
OUNTING THE RANSDUCER
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.
Drill pilot holes here.
Level
Align with the transom
bottom. The transducer
should extend 1/8"
below fiberglass hulls
or 3/8" below aluminum
hulls.
Keep it parallel with the water line.
OK
Fishfinder 340C Owner's Manual