Humminbird 981 Fish Finder User Manual


 
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2. If you will be routing the cable through a hole in the transom, drill a 5/8"
diameter (16 mm) hole above the waterline. Route the cable through this hole,
then fill the hole with marine-grade silicone sealant and proceed to the next
step immediately.
3. Place the escutcheon plate over the cable hole and use it as
a guide to mark the two escutcheon plate mounting holes.
Remove the plate, drill two 9/64" (3.5 mm) holes, then fill both
holes with marine-grade silicone sealant. Place the
escutcheon plate over the cable hole and attach with two
#8 x 5/8" (16 mm) wood screws.
4. Route and secure the cable by attaching the cable clamp to
the transom; drill one 9/64" dia. (3.5 mm) x 5/8" deep (16 mm)
hole, then fill hole with marine-grade silicone sealant, then
attach the cable clamp using a #8 x 5/8" (16 mm) screw.
5. Plug the other end of the transducer cable back into the
control head connection holder.
To perform a final test of the transom transducer installation:
After transom transducer installation, please perform the final testing and then
finalize the installation (see Test and Finish the Transducer Installation).
TROLLING MOTOR TRANSDUCER INSTALLATION
If you want to install the transducer on a trolling motor, use this procedure. Several
styles of the transducer are compatible with trolling motor mounting. If you have a
trolling motor bracket, refer to the separate installation instructions that are included
with the bracket.
NOTE: After trolling motor transducer installation, please perform the final testing and then
finalize the installation (see Test and Finish the Transducer Installation).
If you don’t have a trolling motor transducer, there are
several options:
• You may purchase a Trolling Motor Adapter kit that
will allow you to mount the transducer on the trolling
motor.
• You may also exchange your NEW and UNASSEMBLED
transducer (with mounting hardware included) for a
trolling motor transducer.
There are also several transducer switches available that support the following
configurations:
Two control heads with one transducer
Two transducers with one control head.
NOTE: Call the Humminbird® Customer Resource Center (1-800-633-1468) for details and
pricing, or visit www.humminbird.com for more information.
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