🏷️ Basic Information Identification Make: Yamaha Model: YFB250 Timberwolf 2X4 Model Designation: Timberwolf Drivetrain: 2WD (2X4) Generation Generation Code: First Generation 👋 Introduction Market Position Positioning: The Yamaha YFB250 Timberwolf was positioned as an entry-level to mid-range utility ATV, known for its reliability, ease of use, and versatility for recreational riding and light farm work. It appealed to a broad audience seeking a capable and dependable 2WD machine. Competitive Analysis Competitors: Competed with models like the Honda TRX300FW (though the Timberwolf is 2WD), Kawasaki Bayou 220/300, and Suzuki QuadRunner 250/300, offering a more accessible price point and simpler operation for many users. Key Features Features: Durable and torquey 230cc air-cooled engine, reliable 2WD system, comfortable seating, easy-to-use controls, and Yamaha's reputation for build quality. 📋 Manual Details Coverage Areas Years Covered: 1992, 1993, 1994, 1995, 1996, 1997, 1998 Page Count Estimated Page Count: Approx. 300-400 pages (typical for OEM service manuals of this era) Manual Type Type: OEM Service/Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, inspection, and repair, including top-end and bottom-end components. Fuel System: Carburetor tuning, cleaning, overhaul, fuel pump operation, fuel tank and lines. Lubrication Cooling: Oil pump, oil passages, lubrication points, cooling system operation (air-cooled engine specific). Transmission Drivetrain: Clutch operation, transmission disassembly and assembly, final drive, drive chain maintenance and adjustment. Electrical System: Ignition system, charging system (stator, rectifier/regulator), starter motor, lighting, wiring diagrams. Suspension Steering: Front and rear suspension components, shocks, steering system geometry, tie rods, wheel bearings. Brakes: Drum brake system (front and rear), brake cable adjustment, brake shoe replacement. Bodywork Chassis: Frame inspection, plastic body panel removal and installation, seat, fenders. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain lubrication and adjustment, tire pressure checks, spark plug service. Troubleshooting: Diagnostic procedures for common issues, symptom-based troubleshooting guides. Engine Overhaul: Detailed steps for engine teardown, inspection of internal components (piston, cylinder, crankshaft, valves), and reassembly. Carburetor Rebuild: Step-by-step instructions for carburetor disassembly, cleaning, replacement of jets and seals, and reassembly. Electrical Diagnostics: Testing ignition coil, stator output, battery condition, starter solenoid functionality using multimeters and specified test procedures. Suspension Adjustment: Front and rear shock adjustment procedures, if applicable. Technical Depth Depth: Comprehensive factory-level repair and maintenance information, suitable for both experienced mechanics and determined DIY enthusiasts. 📊 Manual Specifications File Format Format: PDF Print Quality Quality: High-resolution, searchable, and printable pages. Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, Air-Cooled Displacement: 230 cc (approx.) Bore X Stroke: Refer to manual for specific measurements (typically around 69mm x 62mm) Compression Ratio: Refer to manual for specific ratio (typically around 9.5:1) Performance Horsepower: Approx. 16-18 HP (estimated, actual may vary slightly) Torque: Refer to manual for specific torque figures. Fuel System Carburetor Type: Mikuni VM Series (specific model number will be in manual, e.g., VM26) Fuel Type: Unleaded gasoline Fuel Tank Capacity: Approx. 2.3 US gallons (8.7 L) Lubrication Cooling Cooling System: Air-Cooled Oil Type: API SE, SF, SG, SH or SJ service classification, SAE 10W-30 or 20W-40 (refer to manual for precise recommendation) Oil Capacity: Approx. 1.8 US qt (1.7 L) with oil filter change (refer to manual for exact capacity) 🔧 Transmission Standard Type: Constant Mesh, 5-speed with Automatic Clutch and Reverse Features Clutch Type: Automatic Wet Multi-Disc Final Drive: Chain Drive Drive Shaft Oil Type: Yamaha Super Universal Gear Oil (YUG) or equivalent SAE 80 API GL-4 (refer to manual for specific recommendation) 📐 Dimensions Exterior Length: Approx. 71.9 in (1825 mm) Width: Approx. 41.5 in (1055 mm) Height: Approx. 42.1 in (1070 mm) Wheelbase: Approx. 48.2 in (1225 mm) Weights Dry Weight: Approx. 463 lbs (210 kg) Curb Weight: Approx. 487 lbs (221 kg) (with fluids) Cargo Front Rack Capacity: Approx. 45 kg (99 lbs) Rear Rack Capacity: Approx. 65 kg (143 lbs) 🛡️ Safety Features Ratings Atv Safety Designations: Designed for recreational trail riding and utility use. Users must always wear appropriate safety gear including a helmet, eye protection, and protective clothing. Not intended for off-road racing or aggressive sport riding. Active Features Braking System: Front and rear internal expanding drum brakes, actuated by handlebar levers. Parking Brake: Hand-operated parking brake mechanism. 💡 Technology Features Infotainment Features: Basic instrumentation including speedometer, odometer, and indicator lights. No advanced infotainment systems. Driver Assistance Features: None. This ATV relies on rider skill and proper operation. Connectivity Features: No connectivity features. 🔧 Maintenance Service Intervals Engine Oil Change: Every 600 miles (1,000 km) or 6 months (refer to manual for definitive schedule). Air Filter Cleaning: Every 300 miles (500 km) or more frequently in dusty conditions. Spark Plug Inspection: Every 600 miles (1,000 km). Drive Chain Lubrication: Every 300 miles (500 km) or after riding in wet conditions. Fluid...