🏷️ Basic Information Identification Make: Stihl Model: 029/039 Year: N/A (Covers multiple model years) Generation: N/A 📋 Manual Details Publication Manual Type: Workshop Service Repair Manual Language: English Page Count: Comprehensive (Exact page count not specified in product description) Format: Download PDF ⚙️ Engine Specifications Engine Engine Type: 2-stroke gasoline engine Displacement: 56.5 cm³ (029) / 64.1 cm³ (039) Power: 3.0 kW / 4.0 hp (029) / 3.4 kW / 4.6 hp (039) (Approximate) Fuel Fuel Type: Gasoline/Oil Mixture Fuel Mix Ratio: 50:1 (or as specified by Stihl for the era) Ignition Ignition System: Electronic 🔧 Transmission Drivetrain Type: Direct drive Clutch: Centrifugal clutch 📐 Dimensions Physical Bar Length Options: Various (e.g., 16", 18", 20", 25") Weight Without Bar And Chain: Approx. 6.5 kg (14.3 lbs) (029) / 6.8 kg (15.0 lbs) (039) 🔧 Maintenance Servicing Recommended Oil Type: Stihl 2-stroke engine oil Spark Plug Gap: 0.5 mm (0.020 in) (Typical) Air Filter Cleaning Interval: As needed, depending on operating conditions Chain Tensioning: Manual adjustment 📄 Features Operating Anti Vibration System: Yes Carburetor Adjustment: Adjustable (H/L screws) Safety Chain Brake: Inertia-activated chain brake 📄 Parts Information Availability Parts Covered: Engine, carburetor, clutch, ignition, lubrication system, chain brake, handles, etc. 📄 Technical Data Performance Idle Speed: Approx. 2,800 RPM (Refer to manual for exact spec)