Raymarine A50 Installation Instructions Manual page 33

To prepare the mounting bracket:
1. Remove the four screws (1) from the cover (2) and retain for
later use.
2. Remove the cover (2) by lifting it away from the bracket (6).
3. Remove the cable seal (3) from the bracket, taking care not to
damage the attached blanking plugs.
4. Remove the small securing screws (4) from the locking ring (5)
and retain for later use.
5. Turn the locking ring counter-clockwise to unlock it from the
bracket and remove.
6. Push the base plate (7) and O-ring (10) away from the bracket.
Installing the base plate
Note: Careful installation of the base plate is required to preserve
watertight integrity.
To install the base plate:
1. Use adhesive tape to attach the mounting template in the
required position.
Chapter 4: Location and mounting
2. Mark the position of the four securing screws (8) and the cable
hole.
3. Ensure that there are no cables or equipment behind the
mounting surface that can be damaged, then use the hole saw
to remove the material from the cable hole.
4. Use the file to remove any burrs from around the cable hole
5. Drill a 9/16" (3 mm) pilot hole at each of the marked screw
positions.
6. Carefully place the O-ring (10) in the groove on the underside of
the base plate.
7. Pass the power cable and if applicable, the sonar and SeaTalk
cables through the centre hole of the base plate.
8. Secure the base plate into position using the supplied screws,
ensuring that the O-ring remains in position.
Note: For fiberglass mountings, countersink each of the pilot holes
to prevent damage to the gelcoat when driving in the screws.
D11237-1
Re-assembling the bracket
The mounting bracket can now be re-assembled to the base plate.
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