Honda BF135A, BF150A Outboard Motors Shop Manual., Page 402Get this manual

Honda BF135A, BF150A Outboard Motors Shop Manual., Page 402

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BF135ABF150A VALVE SEAT WIDTH
5) Make light pass with the 45 cutter to remove any possible burrs at the edges of the seat6) After resurfacing the seats, inspect for even valve seatingApply Pruss