Basic Information Identification Make: Yamaha Model: YFB 250 Timberwolf Year: 1997 Vehicle Type: All-Terrain Vehicle (ATV) Codes Engine Code: Not explicitly stated, but likely a 250cc class engine Chassis Code: YFB250FW Introduction Market Position Target User: Yamaha ATV owners and independent repair shops Competitive Analysis Value Proposition: Provides official dealer-level repair information for DIY mechanics and shops Key Features Completeness: Covers every part of the vehicle with detailed instructions and diagrams Usability: Simple to use with clear, step-by-step guidance Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English Format: PDF Manual Scope: Comprehensive workshop procedures Manual Coverage Systems Covered Engine: Full overhaul, component inspection, timing, lubrication Carburation: Adjustment, cleaning, rebuilding, jetting Electrical: Wiring diagrams, component testing, ignition system, lighting, starting system Chassis: Frame, suspension (front and rear), steering, braking system Drive Train: Clutch, transmission, drive shafts, final drive Procedures Included Maintenance: Periodic inspections, lubrication, adjustments, fluid changes Repair: Component replacement, internal engine repairs, brake system overhauls Troubleshooting: Diagnostic procedures for common and complex issues Specifications: Torque settings, fluid capacities, clearances, electrical values Technical Depth Depth: From basic maintenance to full engine and transmission rebuilds Diagnostics: Detailed troubleshooting guides with step-by-step instructions Diagrams: Step-by-step diagrams for all workshop procedures Manual Specifications File Format File Type: PDF Compatibility: All versions of Windows & Mac Interactivity: Zoom In/Out capability Requirements: Adobe PDF Reader & WinZip Print Quality Printability: Printable pages (assumed based on professional format) Binding Type Binding: Digital (PDF) - No physical binding Paper Type Paper Type: Not Applicable (Digital Format) Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, air-cooled Displacement: 230cc to 250cc (approximate, based on model name) Performance Horsepower: Estimated 15-20 HP (typical for this class, actual data in manual) Torque: Specific torque figures available in manual Fuel System Fuel Delivery: Carburetor Carburetor Model: Specific model and specifications provided in manual Lubrication Oil Type: Yamalube or equivalent API SG, SAE 10W-30 or 20W-40 (refer to manual for exact spec) Oil Capacity: Specific capacity listed in manual (typically around 1.5-2.0 liters) Ignition Ignition System: CDI (Capacitor Discharge Ignition) Cooling Cooling System: Air-cooled Transmission Standard Transmission Type: Automatic (likely CV-type transmission) Gear Selection: Forward, Neutral, Reverse Features Drive Type: Shaft Drive (likely) Transmission Fluid: Specific fluid type and capacity listed in manual (often gear oil or proprietary blend) Dimensions Exterior Length: Approx. 71.5 inches (1815 mm) - typical for model range Width: Approx. 42.1 inches (1070 mm) - typical for model range Height: Approx. 42.3 inches (1075 mm) - typical for model range Weights Dry Weight: Approx. 463 lbs (210 kg) - typical for model range Ground Clearance: Approx. 7.1 inches (180 mm) - typical for model range Cargo Front Rack Capacity: Specific capacity listed in manual (typically 20-30 lbs) Rear Rack Capacity: Specific capacity listed in manual (typically 40-60 lbs) Towing Towing Capacity: Specific capacity listed in manual (often around 1000-1500 lbs) Safety Features Ratings Safety Certification: Compliant with EPA and state requirements for off-road use Active Features Brakes Front: Hydraulic disc brakes (details in manual) Brakes Rear: Drum brake (likely, often sealed unit) Passive Features Lighting: Headlights, taillight, brake light (detailed in electrical section) Tires: ATV-specific knobby tires (sizes in manual) Technology Features Infotainment Dashboard Features: Speedometer, odometer, indicator lights (e.g., neutral, reverse) Driver Assistance Suspension System: Independent front suspension, swingarm rear suspension (details on adjustments in manual) Connectivity Accessories: Provisions for accessory lighting, winches, etc. (wiring diagrams in manual) Maintenance Service Intervals Oil Change Interval: Typically every 100 hours or annually, consult manual for exact schedule Spark Plug Replacement: Refer to manual for specific interval Air Filter Cleaning: Frequent cleaning recommended, especially in dusty conditions (details in manual) Valve Adjustment: Specific interval and procedure detailed in manual Fluid Specifications Engine Oil Spec: API SG, SAE 10W-30 or 20W-40 (confirm with manual) Brake Fluid Spec: DOT 3 or DOT 4 (confirm with manual) Gear Oil Spec: Specific gear oil or Yamaha's recommended lubricant (check manual) Known Issues Carburetor Clogging: Common with older carbureted engines due to fuel varnish Cvt Belt Wear: Periodic inspection and replacement required based on usage Electrical Connector Corrosion: Can occur in wet environments, requires cleaning and dielectric grease Vehicle History Brand Heritage Manufacturer: Yamaha Motor Corporation Brand Focus: Reputation for reliable engines and innovative ATV designs Model Evolution Timberwolf Line: The Timberwolf line was known for its utility and off-road capability in the mid-size ATV segment Production Production Period: The YFB 250 Timberwolf was produced in the mid-to-late 1990s