John Deere 637 Disk Harrow Operator's Manual This large 216-page operator's manual covers the John Deere 637 disk harrow, RockDisk harrow, and WheatLand disk harrows. Manual includes instructions for operating, lubrication, maintenance, troubleshooting, and adjustments as well as specifications and information on attachments. This manual has no rips, tears or stains. Has some extremely minor wear marks on the covers. Still perfectly usable and readable. Near new! Number of pages stated includes front and back covers. All items are original unless stated otherwise. SHIPPING and PAYMENT: We ship via the US Postal Service Monday thru Friday, WORLDWIDE, after receiving cleared payment. Personal check orders are held 10 business days after receipt of check before shipping; use Paypal or money order and your package is shipped next business day. INTERNATIONAL BUYERS PLEASE NOTE: Shipping prices shown are for U.S. shipments ONLY!! Please request total before paying. No personal checks from outside the U.S. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. International shipping charges are determined on an individual basis, by buyer location and item weight.