This service manual covers Stihl brushcutters, specifically models FS490c, FS510c, and FS560c. These machines are engineered with robust 2-stroke gasoline engines, featuring single-cylinder configurations and electronic ignition for reliable performance. The FS490c boasts a displacement of 47.1 cm³ and delivers 2.4 kW (3.2 bhp), while the FS510c offers 51.6 cm³ and 2.7 kW (3.6 bhp). The most powerful, the FS560c, has a 55.3 cm³ displacement and produces 3.0 kW (4.0 bhp). All models utilize a carburetor fuel system and direct drive transmission, designed for demanding professional use.

The purpose of this English-language service manual is to provide comprehensive technical information for the maintenance and repair of these Stihl brushcutters. It details essential procedures, including the recommended 1:50 fuel mixture with STIHL HP Ultra oil, spark plug specifications (NGK CMR6H with a 0.6 mm gap), and air filter cleaning intervals. This guide is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safe operation of their Stihl FS490c, FS510c, and FS560c equipment.

This service manual covers Stihl brushcutters, specifically models FS490c, FS510c, and FS560c. These machines are engineered with robust 2-stroke gasoline engines, featuring single-cylinder configurations and electronic ignition for reliable performance. The FS490c boasts a displacement of 47.1 cm³ and delivers 2.4 kW (3.2 bhp), while the FS510c offers 51.6 cm³ and 2.7 kW (3.6 bhp). The most powerful, the FS560c, has a 55.3 cm³ displacement and produces 3.0 kW (4.0 bhp). All models utilize a carburetor fuel system and direct drive transmission, designed for demanding professional use.

The purpose of this English-language service manual is to provide comprehensive technical information for the maintenance and repair of these Stihl brushcutters. It details essential procedures, including the recommended 1:50 fuel mixture with STIHL HP Ultra oil, spark plug specifications (NGK CMR6H with a 0.6 mm gap), and air filter cleaning intervals. This guide is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safe operation of their Stihl FS490c, FS510c, and FS560c equipment.