Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 276Get this manual
5FUEL SYSTEM 1CARBURETOR ASSEMBLY REMOVAL 2SILENCER COVER
3MANIFOLDICARBURETOR 4CARBURETOR ASSEMBLY INSTALLATION
1CARBURETOR ASSEMBLY REMOVAL
Gasoline is highly flammable and explosiveYou can be burned or seriously injured when handling fuelKeep heat, sparks, and flame awayHandle fuel only outdoorsWipe up spills immediatelyLoosen the drain screw of each cylinder and drain the engine before removing the carburetor assembly
[BREATHER TUBE
[2] SILENCER COVER
1) Remove the engine cover (P3-4 of the base shop manual)2) Remove the 12 mm flange bolt and pull off the breather tube from the silencer cover