I bought a used brush hog recently in good structural shape, 5 1/2' wide. Got it home on trailer, filled w/ oil up to plug port on gear box. Next day found oil on trailer where it still sat. Refilled and brush-hogged about an acre. Good results. Lifted implement w/ 3 point hitch to look underneath. Fast drip. Machine is Sunshine by Modern (Beaumont, Tex.). Another sticker says Dragon Products. Found an owner's manual online. Seems there is an input seal and output seal. Any suggestions before we tear into it? Do we disassemble from above (take off gear box) or below (at blade hub)?