This service and repair manual covers the Stihl 070/090, a powerful and reliable 2-stroke gasoline engine designed for demanding tasks. Featuring a robust construction and air-cooled operation, these models are engineered for exceptional performance and durability. The engine displacement is 103 cc for the 070 and 106 cc for the 090, both utilizing an electronic ignition system and a centrifugal clutch for efficient power transfer. With a weight of approximately 11.0 kg for the 070 and 11.7 kg for the 090 (without bar and chain), these units offer a balance of power and manageability for professional use.

This comprehensive manual provides essential information for the maintenance, repair, and operation of your Stihl 070/090. It details routine procedures such as air filter cleaning, chain tensioning, and bar lubrication, alongside scheduled maintenance tasks like carburetor adjustment. Technical specifications, including fuel mix recommendations and ignition system details, are covered to ensure optimal performance. Safety guidelines and troubleshooting tips are also included, empowering owners and technicians to keep the equipment in peak condition and ensure safe operation.