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    Thickness of Cylinder Head for 2004 F225 4-Stroke

    I have experienced head gasket failure due to corrsion on one of my 2004 225 Yamaha 4-strokes. I see from all the articles/posts that I am not the first. In trying to weld up & surface the heads, does anyone know what the allowable minimum head thickness is supposed to be for these heads? I...
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