Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 319Get this manual
Ignition SwitctdEmergency Stop SwitcMndicator 1) Remove the under cover, then remove the throttle cable and shift cable (P15-3)
2) Disconnect the tiller handle wire harness (P15-4)1Except mechanical tilt type [I] EMERGENCY STOP SWITCH
INSPECTION: P15-12 ASSEMBLY: Install the emergency stop switch by aligning the cutout in the switch with the flat part of the handle installation section