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b) First run your boat at a low speed. See the sonar information on the screen. If the sonar
display comes out normal, then speed up your boat. Always observe the sonar display
during the course. If signal losing or abnormal sonar display happens when the boat
run at a certain speed, note the speed of your boat.
c) Adjust the transducer in a small scope and run the boat at the noted speed (step 2).
Then observe the sonar display. If the sonar display is normal, go to the next step. If not,
please adjust the transducer until it comes out normal. If by any means a normal sonar
display can not be obtained, then it is necessary for you to relocate the position of the
transducer.
6. The final installation
a) Make sure the transducer could be completely immersed into water, and then adjust
the location of template on the transom to make the transducer immersed into water as
low as possible. This will make the transducer’s transmission / reception being affected
by the whirlpool at the smallest extent when the boat runs at a high speed.
b) As soon as you believe having found the best mounting location of the transducer,
release the pivot from the template, then mark the third hold with a pencil (see
figure-8).
c) Using a 5/32” bit, drill a hole appreciated 1” (25mm)
deep at the marked position.
d) Apply some marine sealant in three holes and hold the template against the transom.
After you are certain the installation is completely in line with the mounting location
which you got at step 4, then tighten the three screws with Allen wrench.
e) Press the pivot into the template.
Shoot-through-hull transducer installation
Transom installation is the most widely used method to install the transducer. However in
some situation you also could use Shoot-thru-hull transducer installation. Which,
compared with Transom installation, is more convenient and fast. However, considering of
the material of boat and any possible trapped air bubbles in the material, sonar signals will
be slightly reduced when passing through the boat hull.
1. Preparation
The boat hull should be single layer construction, since the sonar signal could not pass
through air.
Figure-8
