Bob McCarty wrote:If the sections (knives) need to be replaced, there is a tool call a Johnson Sickle Servicer. It will shear off the old sections, pop out the rivet stubs and then set the new rivets in the new sections. There are probably at least a dozen forum members that have them and one may available close to you or at a Cubfest. You can remove and replace the sections by hand but it is a lot more work. Above the section is a ledger plate attached to the rock guard. They are serrated. The section slides past the ledger plate and whatever is in the way gets cut. If the sections are too worn to sharpen, the serrated ledger plate is worn out, or the 5 hold downs are loose (not keeping the blade tight against the ledger plates), you won't get a good cut. As Bulldawg suggested, read through the manual and make sure your sickle mower is set up correctly. If you see a possible problem area, post some close up pictures for us to see.
Do they sell the Johnson Sickle Servicer as NOS or do you have to find one on eBay or craigslist. I have a set of knives that are NOS in the original box and I would like to install them.