Just got mine apart after a feed chain let go. Removed the rollers (4
screws each) to relube the bushings. As in prior post they are spring
loaded. Fairly simple and straight forward to do. I wound the head
up, loosened the screws, cut a small block of wood to prop under the
roller, wound the head down a bit to get the screws out, wound it back
up to release the roller.
Pete