Furuno Felcom 50 Operator's Manual page 57

Changing owner level password
3 Open the Set access level window again, and click Edit to modify the owner
password. Key in:
Current password
New password (10 - 12 digits)
Retype to confirm
3
4 Click Ok for each entry and store new password.
To revert to User level, open the "Set access level" window and click User.
43C
SBS COM1
5. CONFIGURATION FROM PC
33C
5-5