🏷️ Basic Information Identification Make: Stihl Model: 070-090 / 090G Year: N/A (Covers multiple models) Generation: Vintage/Classic 📋 Manual Details Document Manual Type: Workshop Service Repair Manual Language: English Page Count: Comprehensive (exact number not specified in product description) Format: PDF Download Coverage Coverage: Service, repair, parts breakdown, troubleshooting ⚙️ Engine Specifications Engine Engine Type: 2-stroke gasoline engine Displacement: 70.7 cc (070), 90 cc (090) Power: Approx. 5.6 HP (070), Approx. 7.0 HP (090) Cooling: Air-cooled Ignition System: Electronic Fuel Mixture: Gasoline and 2-stroke oil (e.g., 50:1) Carburetor: Advanced engine management (refer to manual for specific models) 🔧 Transmission Drive Type: Direct Drive Clutch: Centrifugal clutch 📐 Dimensions Physical Length: Variable (depending on bar length) Width: Variable (depending on bar length) Height: Variable (depending on bar length) Weight: Approx. 10.4 kg (070, without bar and chain) Weight 090: Approx. 12.6 kg (090, without bar and chain) 🔧 Maintenance Service Recommended Oil Type: Stihl 2-stroke engine oil Spark Plug Gap: Refer to manual (typically around 0.025 inches) Carburetor Adjustment: Detailed in manual Air Filter Cleaning: Refer to manual Chain Sharpening: Specifications provided in manual