Briar Hill Brittanys
Gold Member
My 2 row JD #246 has the extra gears and I believe you are right. My manual has a chart for the selection of the gears to determine spacing, the gears slide on the Jackshaft.
That's how my A/C 600, and 2 row #6 Lister work, too. After looking a little, this one looks pretty close with the disc cover wheels and planting depth levers. http://jdpc.deere.com/jdpc/pdfs/PC0428.PDF Could have been "farmerized" from the original unit. I like those old planters, way cool! Mark