Categories JOHN DEERE John Deere 4400 and 4420 Combines Service Repair Manual Post author By TQ3yS Post date Full manual link. Please click. → https://www.aservicemanualpdf.com/tm1237-John Deere 4400 and 4420 Combines Service Repair Manual ← John Deere Walk-Behind Tillers and 5B Sprayer Service Repair Manual (tm1233) → John Deere 2600, 2700 and 2800 Semi-Integral; 3600 and 3700 Moldboard Plows Service Repair Manual (tm1240)