22 Transducers for Fishfinders
Installation
Note: To install the thru-hull transducer in a cored fiberglass hull,
follow the instructions in Installation in a Cored Fiberglass Hull on
page 29.
Drilling Holes
WARNING:
Alwayswear safety goggles anda dust maskwhen drilling.
1. Drilla1/8"(3mm) pilotholeperpendiculartothewaterlinefrom
insidethe hull (see Figure 2-3 ).
If there is a rib or strut near the mounting location, drill from the
outside.
Ifthepilothole isdrilled in thewrong location,drillasecond hole
in a better location. Apply masking tape to the outside of the hull
over the incorrect hole and fill it withepoxy.
2. Cut a hole from outsidethe hull:
Fiberglassor wood hull – Use a 2" (51 mm) hole saw.
Aluminium or steel hull – Usea 2 1/8" (54 mm) hole saw to
accommodate the isolation sleeve used to prevent contact
between the stainless steel housing and the metal hull.
3. Sand and clean the area around the hole, inside and outside, to
ensure that the sealant will adhere properly to the hull. If there is
anypetroleumresidueinsidethehull,removeitwitheitheramild
householddetergent or a weak solvent (alcohol) before sanding.
4. Removeonesafetyring,theretainingpin,thecapnut,andthehull
nut from the transducer (see Figure 2-7 ).
To Next Page
Loading...
Need help?
General