How do I remove the tine shaft oil seals on a Troy-Bilt Junior V (Mod # 15006, S/N M0104189)? The outside of the tine drive housing has a silver-colored disc about 45 mm in diameter. Does this disc come off to allow access to the seals? If so, what tool should be used to remove the disc? If not, how are the seals accessed?

Thanks

Garden - Troy-Bilt