2001-2014 Honda BF/BFP8D, BF/BFP9.9D Outboards Shop Manual, Page 249Get this manual
BFBCeBFS.SC EMERGENCY STOP SWITCH
Check for continuity between the terminals according to the table belowClip engagedClip disengagedClip engaged and button pushed There should be no continuityThere should be continuity There should be continuity
EMERGENCY STOP SWITCH REPLACEMENT
1) Remove the 16 mm lock nut and remove the emergency stop switchReplace if necessary2) Install new emergency stop switch and tighten the 16 mm lock nut to the specified torque