I've got a trimmer attachment that doesn't have a grease fitting on the end. I found it strange since my other one has a fitting for greasing. I checked the manual and it says that it is maintenance free if there isn't any fitting. Is there a way around this so that I can grease it? I can't believe that this trimmer head will survive years of trimming without and add of grease. It's the Stihl FS-KM attachment.
