🏷️ Basic Information Identification Make: Stihl Model: BT 120 / BT 121 Year: N/A Generation: N/A 📋 Manual Details Availability Manual Type: Workshop Service Repair Manual Format: PDF Language: English Delivery: Instant Download Technical Requirements Compatibility: All Versions of Windows & Mac Reader Requirement: Adobe PDF Reader Features Printability: All pages are printable Content Included Sections: Introduction, Specifications, Clutch, Chain Drive, Chain Brake And Chain Tensioner, Engine, Ignition System, Rewind Starter, AV Handle System, Master Control / Handle System, Chain Lubrication, Fuel System, Special Servicing Tools And Aids ⚙️ Engine Specifications General Engine Type: Gasoline Engine Displacement: Not Specified Power: Not Specified 🔧 Transmission Drive System Type: Chain Drive Gears: Not Applicable (likely direct drive or automatic clutch engagement) 🔧 Maintenance Scheduled Service Service Interval: Covered in manual Lubrication Oil Capacity: Not Specified 📄 Components Safety Chain Brake: Included Operation Chain Tensioner: Included Starting Rewind Starter: Included Handling Av Handle System: Included Master Control Handle System: Included Fuel Fuel System: Included Lubrication Chain Lubrication: Included 📄 Tools Special Equipment Special Servicing Tools And Aids: Included