Service Bulletins - MTZ-920.4:
9-2016 921.4 Parts book correction due to PTO 920-4202010 modification
10-2016 920.4 952.4 Parts book correction due to PTO 90-4202010 introduction
24-2016 900.4 Series Operator's manuals correction due to PTO 90-4202010 introduction
28-2016 900.4 Series Operator's manuals correction due to PTO 90-4202010 introduction
21-2015 920.4 952.4 Gearbox Control Modification Parts book
13-2014 920.4 952.4 Steering system changes Parts book
50-2013 920.4 952.4 Fire safety requirements Operator's Manual
38-2012 920.4 952.4 Changes in gearbox design. Parts book.