Installing The Thru-Hull Transducer; Tools And Material Needed; Preparation - Raymarine E66008 Owner's Handbook Manual

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Chapter 2: Installation

2.2 Installing the Thru-hull Transducer

Tools and Material Needed

Water-based antifouling paint (mandatory for boats kept in salt
water)
Safety goggles
Dust mask
Electric drill
Drill bit: 1/8" (3 mm)
Hole saw:
Sandpaper
File (for installation in a metal hull)
Mild household detergent or weak solvent (alcohol)
Marine sealant
Slip-joint pliers
Silicone grease or petroleum jelly
Tie-wraps
Cored fiberglass hull installation:
Fairing (required with E66020, E66029 and E66043 transducers;
Level and protractor (installation with a fairing)
Band saw or hand saw (installation with a fairing)
Rasp (installation with a fairing)

Preparation

Fairing
Most vessels have a deadrise angle at the transducer's mounting
location. If the transducer is mounted directly to the hull, the sonar
beam will be tilted off-vertical at the same angle as the deadrise. To
offset this deadrise angle, you can install a transducer fairing.
Different fairings are available to fit various transducers. Fairings are
required for installing the E66020, E66029 and E66043 thru-hull
transducers.
Drill
Fiberglass or wood 2" (51 mm)
Aluminium or steel hull 2-1/8" (54 mm)
Hole saw for hull interior 2-3/8" (60 mm)
Cylinder, wax, tape and casting epoxy
optional for E66024, E66033 and E66035
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