MANUALS ARE LOADED AS PDF’S ON A USB FLASH DRIVE. Illustrated Factory Diagnostic, Operation and Test Service Manual for John Deere Compact Excavators Models 50G This manual contains high quality images, diagrams, instructions to help you to operate, maintenance, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation. Language: English Format: PDF, 570 pages Covered models: 50G (PIN: 1FF050GXH280001-) Contents. Technical Information Feedback Form. Engine Control Unit (ECU) Diagnostic Trouble Codes. Monitor Controller (DSZ) Diagnostic Trouble Codes. Heating and Air Conditioning.