Humminbird 997c SI Combo, Installation And Operation Manual

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1. Place the control head into the gimbal bracket. Make sure that the
straight side of the gimbal arm is against the back side of the control
head.
2. Place a 1" (25 mm) diameter black washer on the gimbal knob and
then thread the knob and washer into the housing. Tighten the
gimbal knob to secure the 900 Series™ control head to the mount.
Repeat step 2 for the other side.
You can now place the control head in various locations to decide which is
best for mounting. Rotating the mounting bracket to the top of the control
head will allow for overhead mounting. The chosen mounting area should
allow for sufficient room so the control head can pivot through the full tilt
range and allow for easy removal and installation.
NOTE: You can drill the cable pass hole underneath the gimbal bracket, allowing
you to thread the cables through the knock-out holes in the mount; however, if
you cannot drill the hole directly under the mounting bracket, then you will need
to drill the cable pass hole behind the bracket, and will need to mount the hole
cover there instead.
NOTE: When drilling holes in fiberglass hulls, it is best to start with a smaller bit
and use progressively larger drill bits to reduce the chance of chipping or flaking
the outer coating. Fill all holes with marine grade silicone sealant.
NOTE: You must have underside access to the mounting location to pass the
cables through to the surface. Also, make sure that the mounting surface is
adequately supported to protect the control head from excessive wave shock and
vibration and provide visibility while in operation.
3. After the mounting location has been determined, loosen the gimbal
knobs and remove the control head from the gimbal bracket.
NOTE: Alternate hole patterns are available on the gimbal mounting bracket, and
may match existing holes on the boat. You may choose to use one of these
alternate hole patterns.
4. Place the gimbal bracket in the chosen position on the mounting
surface and mark the four mounting screw locations using a pencil
or center punch.
NOTE: Go to the installation instructions applicable to your transducer, GPS
Receiver and accessories. Make the required installations and then run the
cables to your control head mounting location. Do not cut any cabling (except the
power cable). If your cables are too short, extensions are available from your local
dealer or online from
www.humminbird.com .
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