Raymarine AXIOM XL 16 Installation Instructions Manual page 25

4. Using a 4 mm Hex (Allen) key, tighten the mounting bar bolts so that the feet are tight against the
rear of the mounting surface.
5. Using a 8 mm wrench or adjustable wrench, tighten the nut against the washer and the mounting
bar to lock in position.
The nut should be tightened sufficiently to securely hold the MFD in position.
Important:
In above decks, flush mount installations, marine-grade silicone should be used to seal the gap
between the edge of the mounting surface and the edge of the MFD.
Installation 25