Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 284Get this manual
6 mm Tom Bit Bolt Remove and install the 16 mm tom bit bolts with commercially available tom bit screw (T30H)111 TORX BIT SCREW (T30H) (Commercially available)
6xl6mm TORX BIT BOLT (2)
Carburetor Gasketlnsulator
Install the carburetor gaskets and insulator as shownNote the installation direction