🏷️ Basic Information Identification Make: Yamaha Model: YFB250 Timberwolf Model Variant: 4x4 Production Years Covered By Manual: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 Vehicle Type: All-Terrain Vehicle (ATV) Generation Generation Identifier: First Generation (1992-2000) Codes Chassis Code: YFB250F 👋 Introduction Market Position Vehicle Market Segment: Entry-level to mid-range utility ATV, known for reliability and versatility in various terrains. Competitive Analysis Key Competitors: Honda FourTrax 300 4x4, Suzuki QuadRunner 250 4x4, Kawasaki Bayou 220/250 4x4. Key Features Notable Vehicle Features: Shaft-driven 4x4 system, reliable air-cooled engine, comfortable riding position, rugged utility design. 📋 Manual Details Coverage Areas Manual Coverage Scope: Comprehensive repair, service, and maintenance Additional Coverage: Includes information for 'Owners Manuals' and 'Parts Catalogs' if integrated or referenced within the primary repair manual. Page Count Estimated Page Count: Not specified in product information, typical for this era and scope would be 300-600 pages. Manual Type Manual Type: Repair Manual / Service Manual / Workshop Manual Language Language: English Format Format: Downloadable PDF File Access Method: Instant download after payment, no ZIP files. 📖 Manual Coverage Systems Covered Engine Systems: Engine removal/installation, internal engine components, lubrication, cooling system, fuel system, intake & exhaust systems. Drivetrain Systems: Transmission, drive chain, sprockets, 4x4 engagement. Suspension And Steering: Shocks, steering system. Electrical And Ignition: Electrical system, wiring diagrams, ignition system, starting system, lighting. Chassis And Body: Bodywork, frame, plastic components. Fuel System Details: Carburetor tuning, cleaning, jetting, fuel pump operation (if applicable), fuel lines, fuel filter. Electrical System Details: Wiring diagrams, stator, CDI unit, voltage regulator, battery, starter, lighting circuits, fuses. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustments, spark plug inspection/replacement, general inspections. Repair Procedures: Engine rebuilds, transmission repair, carburetor overhaul, suspension component replacement, brake system service. Troubleshooting: Advanced troubleshooting guides, diagnostic procedures, common issue resolution. Engine Rebuild Steps: Disassembly, inspection, part replacement (pistons, rings, valves, seals), reassembly, torquing procedures. Troubleshooting Methodology: Systematic approach to diagnosing common problems, using schematics and diagnostic charts. Technical Depth Depth Of Information: Detailed specifications, step-by-step repair instructions, wiring diagrams, exploded views, torque specifications. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality Description: High-resolution, suitable for printing individual pages or entire sections. Optimized for clarity of diagrams and text. Binding Type Binding Type: N/A (Digital download) Paper Type Paper Type: N/A (Digital download) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, air-cooled Displacement: 230cc (approximately) Bore X Stroke: Specifics detailed within the manual, typical for this era around 69mm x 62mm. Compression Ratio: Specifics detailed within the manual, typically around 8.5:1 to 9.0:1. Performance Horsepower Estimate: Estimated 15-18 HP at peak RPM (specific dyno figures would be in manual). Torque Estimate: Estimated 12-15 lb-ft at peak RPM (specific figures would be in manual). Fuel System Carburetor Model: Mikuni VM Series (specific model and jetting detailed in manual). Fuel Type: Unleaded gasoline Fuel Tank Capacity: Approximately 2.8 gallons (specifics in manual). Lubrication Oil Type Specification: Yamalube 4 (or equivalent SAE 10W-30 or 20W-40 API SG or higher) – detailed in manual. Oil Capacity: Approximately 1.7 US qt (1.6 L) with filter change – specific in manual. Cooling System Cooling Method: Air-cooled 🔧 Transmission Standard Transmission Type: Constant mesh, 5-speed with automatic clutch and reverse. Drive System: Shaft drive to rear wheels, shaft drive to front differential. Gear Ratios: Specific gear ratios for all gears and reverse detailed within the manual. Features 4Wd System Engagement: On-demand 4WD engaged via handlebar lever. Transmission Fluid Type: Yamaha Motorcycles Gear Oil (or equivalent SAE 80 API GL-4) – specified in manual. 📐 Dimensions Exterior Overall Length: Approximately 72.6 inches (1845 mm) – specific measurements in manual. Overall Width: Approximately 43.3 inches (1100 mm) – specific measurements in manual. Overall Height: Approximately 42.7 inches (1085 mm) – specific measurements in manual. Weights Dry Weight: Approximately 467 lbs (212 kg) – specific weight detailed in manual. Ground Clearance: Approximately 5.1 inches (130 mm) – specific measurement in manual. 🛡️ Safety Features Ratings Safety Certifications: ATV safety standards compliance (detailed in manual if applicable). Active Features Braking System: Hydraulic disc front brakes, drum brake rear. Specific component details and service procedures in manual. Passive Features Lighting: Halogen headlights, taillight/stoplight. Wiring diagrams and bulb specifications in manual. 💡 Technology Features Infotainment Infotainment Systems: N/A (Basic utility ATV design, no advanced infotainment). Driver Assistance Driver Assistance Features: N/A (Basic utility ATV design, no electronic driver assistance). Connectivity Connectivity Options: N/A (Basic utility ATV design, no electronic connectivity). 🔧 Maintenance Service Intervals Engine Oil Change Interval: Every 1000 km (600 miles) or 6 months, whichever comes first (typical, check manual for exact specification). Spark Plug Inspection Interval: Every 1000 km (600 miles) or 6 months (typical, check manual for exact specification). Air Filter Cleaning Interval: Every 500 km (300 miles) or more frequently in dusty conditions (typical, check manual for...
High-resolution, suitable for printing individual pages or entire sections. Optimized for clarity of diagrams and text.
Binding Type
Binding Type:
N/A (Digital download)
Paper Type
Paper Type:
N/A (Digital download)
⚙️ Engine Specifications
Primary Engine
Engine Type:
Four-stroke, SOHC, air-cooled
Displacement:
230cc (approximately)
Bore X Stroke:
Specifics detailed within the manual, typical for this era around 69mm x 62mm.
Compression Ratio:
Specifics detailed within the manual, typically around 8.5:1 to 9.0:1.
Performance
Horsepower Estimate:
Estimated 15-18 HP at peak RPM (specific dyno figures would be in manual).
Torque Estimate:
Estimated 12-15 lb-ft at peak RPM (specific figures would be in manual).
Fuel System
Carburetor Model:
Mikuni VM Series (specific model and jetting detailed in manual).
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approximately 2.8 gallons (specifics in manual).
Lubrication
Oil Type Specification:
Yamalube 4 (or equivalent SAE 10W-30 or 20W-40 API SG or higher) – detailed in manual.
Oil Capacity:
Approximately 1.7 US qt (1.6 L) with filter change – specific in manual.
Cooling System
Cooling Method:
Air-cooled
🔧 Transmission
Standard
Transmission Type:
Constant mesh, 5-speed with automatic clutch and reverse.
Drive System:
Shaft drive to rear wheels, shaft drive to front differential.
Gear Ratios:
Specific gear ratios for all gears and reverse detailed within the manual.
Features
4Wd System Engagement:
On-demand 4WD engaged via handlebar lever.
Transmission Fluid Type:
Yamaha Motorcycles Gear Oil (or equivalent SAE 80 API GL-4) – specified in manual.
📐 Dimensions
Exterior
Overall Length:
Approximately 72.6 inches (1845 mm) – specific measurements in manual.
Overall Width:
Approximately 43.3 inches (1100 mm) – specific measurements in manual.
Overall Height:
Approximately 42.7 inches (1085 mm) – specific measurements in manual.
Weights
Dry Weight:
Approximately 467 lbs (212 kg) – specific weight detailed in manual.
Ground Clearance:
Approximately 5.1 inches (130 mm) – specific measurement in manual.
🛡️ Safety Features
Ratings
Safety Certifications:
ATV safety standards compliance (detailed in manual if applicable).
Active Features
Braking System:
Hydraulic disc front brakes, drum brake rear. Specific component details and service procedures in manual.
Passive Features
Lighting:
Halogen headlights, taillight/stoplight. Wiring diagrams and bulb specifications in manual.
💡 Technology Features
Infotainment
Infotainment Systems:
N/A (Basic utility ATV design, no advanced infotainment).
Driver Assistance
Driver Assistance Features:
N/A (Basic utility ATV design, no electronic driver assistance).
Connectivity
Connectivity Options:
N/A (Basic utility ATV design, no electronic connectivity).
🔧 Maintenance
Service Intervals
Engine Oil Change Interval:
Every 1000 km (600 miles) or 6 months, whichever comes first (typical, check manual for exact specification).
Spark Plug Inspection Interval:
Every 1000 km (600 miles) or 6 months (typical, check manual for exact specification).
Air Filter Cleaning Interval:
Every 500 km (300 miles) or more frequently in dusty conditions (typical, check manual for exact specification).
Fluid Specifications
Engine Oil Specification:
Yamalube 4 (or equivalent SAE 10W-30 or 20W-40 API SG or higher).
Transmission Oil Specification:
Yamaha Motorcycles Gear Oil (or equivalent SAE 80 API GL-4).
Known Issues
Common Wear Items:
Brake pads/shoes, drive chain and sprockets, carburetor jets (clogging due to fuel quality/age), starter motor brushes, potential for coolant leaks in liquid-cooled models (though Timberwolf is air-cooled).
Troubleshooting Areas:
Starting issues, carburetor performance degradation, drive line noise, suspension wear.
📚 Vehicle History
Brand Heritage
Yamaha Atv Legacy:
Yamaha has a long history of innovation and reliability in the ATV market, starting with the original 'Three Wheelers' and evolving into modern ATVs.
Model Evolution
Timberwolf Development:
The Timberwolf series was introduced to offer a capable, mid-size utility ATV with a focus on reliable performance and user-friendliness.
Production
Manufacturing Origin:
Yamaha ATVs are typically manufactured in Japan or the United States.
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