Plastimo ECHOFISH 820 Manual De Instalación Y Funcionamiento página 14

2.3 Permanent Shoot-Thru-Hull installation
a- Make sure the surface of the chosen location is clear, dry
and free of any oil. Sand the mounting surface of the trans-
ducer with 100 grit sandpaper until it looks very clean and
flat.
b- Wipe off the sand debris on mounting surface with a
piece of cloth. Clean the mounting surface of hull and
transducer with rubbing alcohol.
c- Get a quantity of epoxy and hardener and mix them as
described in the epoxy manual
d- When the epoxy looks unworkable (about 20 minutes are
needed from the beginning you mixing them), make sure
there are no air bubbles in the epoxy layer, then spread a
thin layer of epoxy on the surface of transducer, a compa-
rably thick layer to the surface of sand area on the hull.
e- Press the transducer into the epoxy of the sanding area
on the hull with a slight twisting motion, forcing any air
bubbles out from underneath. Make sure the face of the
transducer will be parallel with the hull after you finish the
entire above job.
Warning: do not bump the transducer while the epoxy is wet. It will
take about 24hours for the epoxy to cure completely.
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Echofish 820 – Installation & Operation manual