This is an original OEM CAT Manual on CD for 304C CR and 305C CR Mini Hydraulic Excavators. This is the exact same service manual that Caterpillar dealer technicians refer to. It contains information on Specifications, Systems Operation, Disassembly and Assembly, Testing & Adjusting, Troubleshooting, Schematics, and Operation and Maintenance Information. The files on CD are in pdf format, Adobe Acrobat is required to view the information. Information may be viewed on computers or tablets, and pages can be printed as-needed.