Datamarine instrument removal

Oct 21, 2011
1
Pearson 31-2 Davis Wharf, VA
how do I remove the knot meter from the bulkhead? Pearson 31-2 hull #174.
 
Feb 26, 2004
23,049
Catalina 34 224 Maple Bay, BC, Canada
Inside the back of the unit is a silver ring, remove it. DMImarine has instructions on their website IIRC.