Installation; Drilling Holes - Raymarine DSM300 Install Manual

Digital sounder module
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Chapter 2: Transducer Installation
Figure 2-12: Applying Antifouling Paint

Installation

To install the thru-hull transducer in a cored fiberglass hull, follow the instructions
Note:
in Installation in a Cored Fiberglass Hull on page 48.

Drilling Holes

CAUTION:
Always wear safety goggles and a dust mask when drilling.
1. Drill a 1/8" (3 mm) pilot hole perpendicular to the water line from inside the
hull (see Figure 2-9 ).
If there is a rib or strut near the mounting location, drill from the outside.
If the pilot hole is drilled in the wrong location, drill a second hole in a better
location. Apply masking tape to the outside of the hull over the incorrect hole
and fill it with epoxy.
41

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