1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 112Get this manual
2If leakage persists, drill mm (18") hole through the center of the core plug to depth of not more than 1,5 mm (116") below its surfaceWith punchcarefully pry out the core plug3Inspect and clean the casting contact area If nicks, scratches, or an out-of-round condition exist, the casting will have to be replacedIf casting opening is normal, apply bead of OMC Adhesive "M" to the outer edge of new core plugPlace the new core plug in the casting opening, convex side upFlatten to tight fit with flat end punch and hammerCheck for leakage with oil covering core plug while blowing with compressed air ill
Lead ShotsAll Models
If leakage occurs at lead shot area, follow these corrective measures: 1If leakage is slight, smart tap with hammer in the center of the lead shot will normally correct this condition2If leakage still exists, remove the lead shot with an appropriate sharp tool3Clean and inspect casting openingIf the casting opening is normal, install new lead shot in casting opening and flatten out with light hammer tapsCheck for leakage&