Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 341Get this manual
PILOT SCREW REPLACEMENT Leave the pilot screw and limiter cap in place during carburetor cleaningRemove only if necessary for carburetor repairRemoval of the limiter cap requires breaking the pilot screwA new pilot screw and limiter cap must be installed1) When the limiter cap has been broken off, remove the broken pilot screw2) Place new O-ring on the replacement pilot screw, and install it on the carburetor
3) Turn the pilot screw in until it is fully seated, then turn the screw out the required number of turns