This service manual covers the Engine Control System for FENDT Agricultural Tractors, including models such as the Farmer 200 V/F/P/S, Farmer 300 Ci, Farmer 400 Vario, FENDT 700 Vario, FENDT 800 Vario, and FENDT 900 Vario. These tractors are engineered for demanding agricultural field operations, transport, and Power Take-Off (PTO) work, featuring advanced Vario continuously variable transmissions and sophisticated internal combustion diesel engines. The engine control system, managed by an Electronic Control Unit (ECU) with associated sensors and actuators, is crucial for optimizing fuel injection timing, ignition timing, emissions control, idle speed, and torque management, ensuring reliable and efficient operation under various conditions.

The purpose of this German-language Service Manual is to provide comprehensive technical information and guidance for the maintenance and repair of the FENDT tractor engine control systems. It details essential procedures, including recommended maintenance schedules and the use of high-quality engine oil meeting FENDT/OEM standards. Furthermore, the manual offers extensive troubleshooting guidance, covering fault code diagnosis and repair procedures, and outlines the use of OBD-compatible diagnostic tools. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining the performance and longevity of their FENDT agricultural machinery.