Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 122Get this manual
Cylinder Bores IMPORTANT: The cylinder bores are chrome and cannot be rebored or efficiently honed(Honing of chrome cylinder Is nol necessary or recommended
Cylinder Bores IMPORTANT: The cylinder bores are chrome and cannot be rebored or efficiently honed(Honing of chrome cylinder Is nol necessary or recommended