Farmall International 544,656, 666, & Hydro 70 and Hydro 86 Hydrostatic Drive Service GSS-1397 Service / Shop Reproduction Manual.  This is a Reproduction of the same manual that the factory issued to the Farmall tractor dealers service department. This manual covers these topics:

• Special Service Tools Required
• Standard Torque Data
• Specifications
• Principles of Hydrostatics
• Operating Principles
• Familiarization and Component Indentification
• Controling The Tractor Hand Controlled Models
• Controling The Tractor Foot Controlled Models
• Unit Service
• Servicing Components
• Range Transmission and MPH Drive
• Hydraulic and Differential Lubrication Charts
• Adjustments
• Testing and Troubleshooting
• Saftey Starting Procedure

It is written in the language that a mechanic understands. Providing information such as.

 The service manual will show shortcuts and save you time and money.

Also consider purchasing the operators, parts catalog and service manuals for your tractor, if available. The operator’s manual adds all the basic information meant for the end user of the machine, while The parts manual will make it much easier to find the right parts for the job and show in detail how the components are put together.