Honda BF135A, BF150A Outboard Motors Shop Manual., Page 443Get this manual
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BF135ABF150A
Remove the following parts- Engine cover (P4-2)L.lRengine under covers (P4-9)Cylinder head assembly (P10-19)Engine assembly (P7-2)Oil pump (P11-6)Flywheel (P11-12)Crankcasebalancer