Garmin 400C Owner's Manual page 9

To mount the bracket assembly:
1. Using the swivel base as a template, mark the location of the
three holes that secure the bracket to the mounting surface.
2. Drill the mounting holes.
• If you secure the base with machine bolts, drill three
5/32" (5 mm) holes at the locations you marked.
OR
• If you secure the base with self-tapping screws, drill
starter holes at the locations you marked. Do not make
the starter holes deeper than half the screw length.
3. Secure the swivel base with three bolts or screws. DO NOT
OVERTIGHTEN.
4. Place the swivel mount bracket over the swivel base and
secure it with the short knob.
Fishfinder 400C Owner's Manual
Installing the Fishfinder 400C on the Mounting Bracket
To install the unit on the mounting bracket:
1. Align the slot on the back of the fishfinder with the long
mounting knob, and slide the fishfinder into place. If
necessary, adjust the long knob to spread the bracket arms
apart. (Turn counter-clockwise to widen the bracket arms and
clockwise to tighten.)
2. Adjust the fishfinder angle, and tighten the long mounting
knob until snug.
3. Rotate the swivel mount bracket by twisting it left or right.
The bracket clicks as you turn it. Select a good viewing
angle, and then tighten all knobs.
4. Connect the power/data and transducer cables to the back
of the fishfinder, making sure the locking rings are fully
tightened on both connectors.
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