Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 118Get this manual
HONDA BFBOASSA
bINSPECTION
8 83 mm FLANGE BOLT
Measure bolt lengthIf not within service limit, replace the boltSTANDARD
SERVICE LIMIT84.9 rnrn (3.34 in)
82.583.5 mrn (3.253.29 in)
CRANKCASE
ASSEMBLY: Before installation, apply Three Bond141C to the area shown in the drawingCAUTION Do not apply the liquid gasket to the crankshaft journals or the bolt holesAPPLY THE LIQUID GASKET