Furuno DFF-3D Operator's Manual page 26

2. WIRING
5. Fasten the sealing nut to fasten the LAN cable. The clearance between the seal-
ing nut and the super gland shall be 3 mm. The fastening torque for the sealing
nut is 1.8 - 2.0 Nm.
How to disconnect the LAN cable
Loosen the two screws on the gland to access the cable's connector. A lock washer
is fitted to the gland, so the screws cannot be unfastened completely.
2-10
Gland
3 mm
Screw (2 pcs.)