Categories JOHN DEERE JOHN DEERE JD644, JD644A LOADER Service Repair Manual Post author By TQ3yS Post date Full manual link. Please click. → https://www.aservicemanualpdf.com/tm1011-JOHN DEERE JD644, JD644A LOADER ← John Deere 400 and 425 Hay Cubers Service Repair Manual (tm1010) → John Deere 1520 Tractor Service Repair Manual (tm1012)