2003 Mercury 15hp 4-stroke, #OT618616

by Kevin Macdonald
(Belgrade Lakes, Maine)

2003 Mercury 15hp 4-stroke

2003 Mercury 15hp 4-stroke

Unable to seat socket onto lower spark plug in order to replace it. I had been advised to get a ‘wobble head’ socket (similar to a universal socket but with 360’ of rotation) , but am still unable to seat the socket onto the spark plug.

Has anyone else had this problem? Any advice?

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