• Renew the diameter and replace a new oil drain plug.
• Six popular sizes fit nearly all applications.
• Disassemble the damaged oil drain screw.
• Choose a tap. For example, if the original diameter of oil
drain hole is M14, then operator needs a M15 tap.
• Use a tool operating the tap to enlarge the diameter of
oil drain hole.
• Take a washer through the new oil drain plug, and then
insert a new oil drain plug.