Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 47Get this manual
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HONDA BF80ASSA
0.29 (0.307 US qt, 0.255 Imp qt MARINE SEA 90 Hypoid gear oil API Service Classification (GL-4 or GL-5)
Recommended gear oil
4SPARK PLUGS
Re