Operator’s Manual Serial number range
GTH-4518 ER GTH-4020 ER
From s/n: 19127 To s/n: 20117
GTH-6025 ER
From s/n: 13309 To s/n: 19308
From s/n: 18004 To s/n: 20111
With Maintenance Information
First Edition Third Printing Part No. 57.0009.0404
Operator’s Manual Serial number range
GTH-4518 ER GTH-4020 ER
From s/n: 19127 To s/n: 20117
GTH-6025 ER
From s/n: 13309 To s/n: 19308
From s/n: 18004 To s/n: 20111
With Maintenance Information
First Edition Third Printing Part No. 57.0009.0404