The Timberwolf 250 4x4, model code YFB250FWL, is a capable Sport/Utility All-Terrain Vehicle (ATV) produced around 1999. This model is engineered for recreational riders, hunters, and utility users who require reliable four-wheel-drive performance. Key features include a selectable 4x4 drivetrain for enhanced traction, a robust 230 cc air-cooled, 4-stroke engine delivering consistent torque, and a durable chassis designed to handle varied terrain. Its practical design is further complemented by front and rear racks, offering substantial cargo-hauling capabilities, making it a versatile choice for demanding tasks and adventurous outings. This manual serves as a comprehensive guide for the Timberwolf 250 4x4, covering essential operator information, basic maintenance, and troubleshooting. Within its pages, you will find detailed instructions on engine operation, drivetrain management, chassis components, and pre-operation checks. The manual also provides guidance on riding techniques, basic maintenance procedures such as lubrication and adjustments, and a troubleshooting chart for common issues. Its purpose is to empower owners and technicians to ensure the safe, efficient, and reliable operation and upkeep of the vehicle, covering systems like the engine, transmission, brakes, and electrical components. 🏷️ Basic Information Identification Make: Yamaha Model: Timberwolf 250 4x4 Model Code: YFB250FWL Year: 1999 Codes Vin Prefix: JYA 👋 Introduction Market Position Category: Sport/Utility All-Terrain Vehicle (ATV) Target Audience: Recreational riders, hunters, utility users requiring 4x4 capability. Competitive Analysis Competitors: Honda FourTrax, Suzuki QuadRunner, Kawasaki Bayou, Polaris Sportsman (in similar displacement classes) Key Features Feature 1: Selectable 4x4 drivetrain for enhanced traction Feature 2: Reliable and torquey 250cc engine Feature 3: Durable chassis and suspension for varied terrain Feature 4: Front and rear racks for cargo hauling 📋 Manual Details Coverage Areas Primary Focus: Owner's Manual Vehicle Systems: Engine, Transmission, Drivetrain, Suspension, Brakes, Electrical, Fuel System, Controls, Chassis, Bodywork Page Count Estimated Pages: Approx. 100-150 pages (based on typical owner's manual length and content index) Manual Type Type: Owner's Manual / Operator's Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Operation: Starting (cold & warm), warming up, operation, stopping, fuel, oil, choke Drivetrain Operation: Drive select lever operation, shifting, reverse driving, front & rear brakes, parking brake, throttle lever, speed limiter Chassis Components: Seat, storage box, front carrier, rear carrier, fuel tank cap, fuel cock, recoil starter, handlebar switches, indicator lights, main switch Procedures Included Pre Operation: Pre-operation checks, checking tire pressure, checking tire wear limit Riding Techniques: Getting to know your machine, riding your vehicle, turning, acceleration, deceleration, climbing uphill, riding downhill, crossing a slope, crossing through shallow water, riding over rough terrain, sliding and skidding Maintenance Basic: Periodic maintenance, lubrication, throttle lever adjustment, front brake lever free play adjustment, rear brake adjustment, clutch adjustment (if applicable), cable inspection Troubleshooting: Troubleshooting chart, common problems and solutions Technical Depth Depth: Covers essential operator information, basic maintenance, and troubleshooting for safe and effective use of the ATV. Does not typically include detailed repair procedures or diagnostic codes found in a service manual. 📊 Manual Specifications File Format Type: PDF Compatibility: All Versions of Windows & Mac Requirements: Adobe PDF Reader Print Quality Quality: Digital (high resolution for clarity, printable) Binding Type Type: N/A (Digital Download) Paper Type Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Type: Air-cooled, 4-stroke, SOHC, single-cylinder Displacement: 230 cc (approximately) Bore X Stroke: Not specified in product info, typical for this era might be around 67 x 66 mm Compression Ratio: Not specified in product info, typical might be 9.0:1 to 10.5:1 Performance Horsepower: Estimated 15-18 HP (specific figures not provided) Torque: Estimated 12-15 lb-ft (specific figures not provided) Fuel System Carburetor: Mikuni VM Series (likely 26mm or similar, specific size not provided) Fuel Type: Unleaded gasoline (87 octane minimum recommended) Engine Oil Oil Type: Yamaha Genuine Yamalube 4 (or equivalent API SG, JASO MA certified 10W-30 or 20W-40) Oil Capacity: Approx. 1.7 Liters (1.8 US qt) without filter change, 1.9 Liters (2.0 US qt) with filter change (typical for this model) 🔧 Transmission Standard Type: 5-speed manual with reverse Clutch: Wet, multi-disc, manual clutch operation Features Drive Select: 2WD/4WD selectable Transfer Gear Oil Oil Type: Yamaha Genuine Gear Oil (or equivalent SAE 80 hypoid gear oil) Oil Capacity: Approx. 0.25 Liters (0.26 US qt) (typical) Final Gear Oil Oil Type: Yamaha Genuine Gear Oil (or equivalent SAE 80 hypoid gear oil) Oil Capacity: Approx. 0.1 Liters (0.11 US qt) (typical) 📐 Dimensions Exterior Length: Approx. 75.6 inches (1920 mm) Width: Approx. 40.2 inches (1020 mm) Height: Approx. 43.3 inches (1100 mm) Wheelbase: Approx. 48.8 inches (1240 mm) Weights Dry Weight: Approx. 518 lbs (235 kg) Curb Weight: Approx. 540 lbs (245 kg) (estimated with fluids) Cargo Front Rack Capacity: Approx. 44 lbs (20 kg) Rear Rack Capacity: Approx. 88 lbs (40 kg) 🛡️ Safety Features Ratings Rollover Protection: ATVs are not designed for rollover protection; always ride responsibly...