1985 OMC 65, 100 and 155 HP Models Commercial Service Repair manual, PN 507450-D, Page 226Get this manual

1985 OMC 65, 100 and 155 HP Models Commercial Service Repair manual, PN 507450-D, Page 226

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1 Throughly clean the cover and cylinder head gasket surfaces to remove traces of sealer and gasket material2 Clean and inspect pressure release valve, spring and thermostat