Honda BF115A, BF130A Outboard Motors Shop Manual., Page 242Get this manual

Honda BF115A, BF130A Outboard Motors Shop Manual., Page 242

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PISTON RING GROOVE WIDTH STANDARD
Measure the piston ring end gap 1520 mm (0.6- in) from the cylinder bottomBefore measurement, be sure to set the ring on the cylinder securely using the piston<