Categories JOHN DEERE John Deere 686 and 688 Rotary Harvesting Units Service Repair Manual (tm4585) Post author By TQ3yS Post date Full manual link. Please click. → https://www.aservicemanualpdf.com/tm4585-John Deere 686 and 688 Rotary Harvesting Unit ← John Deere 680, 690, 680 MultiCut and 690 Multicut Large Square Balers Service Repair Manual (tm4581) → John Deere 5300N, 5400N and 5500N Tractor Service Repair Manual (tm4598)