Throttle lever, speed limiter, front brake lever, rear brake pedal and lever, parking brake, shift pedal, drive select lever, recoil starter, fuel tank cap, fuel cock, starter choke, seat, storage box, front carrier, rear carrier
Procedures Included
Pre Operation:
Pre-operation checks
Operation:
Starting a cold engine, starting a warm engine, warming up, to start out and accelerate, to decelerate, riding your vehicle, turning your vehicle, climbing uphill, riding downhill, crossing a slope, crossing through shallow water, riding over rough terrain, sliding and skidding
Maintenance:
Periodic maintenance, lubrication, engine oil replacement, transfer gear oil replacement, final gear oil replacement, differential gear oil replacement, battery fluid replenishment, fuse replacement, spark plug inspection, air filter cleaning, spark arrester cleaning, wheel removal and installation, front axle boots inspection, brake shoe inspection, cable inspection
Troubleshooting:
Troubleshooting chart, common problems
Technical Depth
Depth:
Comprehensive for owner operation, maintenance, and basic troubleshooting. Does not cover in-depth mechanical repair or diagnostics typical of a service manual.
📊 Manual Specifications
File Format
Compatibility:
All Versions of Windows & Mac
Reader Requirement:
Adobe PDF Reader
Print Quality
Quality:
Digital Download (Quality dependent on original source)
Binding Type
Type:
N/A (Digital Download)
Paper Type
Type:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Type:
Air-cooled, SOHC, 4-stroke
Displacement:
230cc (approximate)
Bore X Stroke:
67.0mm x 66.0mm (estimated)
Compression Ratio:
9.1:1 (estimated)
Performance
Horsepower:
Approx. 17-20 HP (estimated)
Torque:
Approx. 13-15 lb-ft (estimated)
Fuel System
Carburetor:
Mikuni VM26SS (likely)
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Lubrication
Engine Oil Type:
Yamalube 4 (or SAE 10W-30 API SE, SF, SG type motor oil)
Engine Oil Capacity:
Approx. 1.7L (1.8 US qt) with filter change (estimated)
🔧 Transmission
Standard
Type:
5-speed constant mesh with automatic clutch and reverse
Features
Drive System:
Shaft drive, On-Demand 4WD
Transfer Gear Oil Type:
Yamalube Gear Oil (or SAE 80 API GL-4)
Final Gear Oil Type:
Yamalube Gear Oil (or SAE 80 API GL-4)
Differential Gear Oil Type:
Yamalube Gear Oil (or SAE 80 API GL-4)
📐 Dimensions
Exterior
Length:
Approx. 72.4 inches (1840 mm)
Width:
Approx. 40.4 inches (1025 mm)
Height:
Approx. 41.1 inches (1045 mm)
Weights
Dry Weight:
Approx. 463 lbs (210 kg)
Curb Weight:
Approx. 485 lbs (220 kg)
Payload Capacity:
Approx. 300 lbs (136 kg) total for rider and cargo
Cargo
Front Rack Capacity:
Approx. 45 lbs (20 kg)
Rear Rack Capacity:
Approx. 88 lbs (40 kg)
🛡️ Safety Features
Ratings
Segment Safety:
ATVs are inherently risky; adherence to manual instructions is critical.
Active Features
Active Safety 1:
Four-wheel drive for enhanced traction and stability
Active Safety 2:
Throttle limiter for controlled acceleration
Passive Features
Passive Safety 1:
Handlebar-mounted controls for intuitive operation
Passive Safety 2:
Durable chassis construction
Guidance
Essential Guidance:
Always wear a helmet, eye protection, gloves, and appropriate apparel. Read and understand the owner's manual before operating.
💡 Technology Features
Infotainment
Features:
N/A (Basic Utility ATV)
Driver Assistance
Features:
N/A (Basic Utility ATV, relies on rider skill)
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 600 miles (1000 km) or 6 months (whichever comes first)
Air Filter Cleaning:
Every 120 miles (200 km) or 6 months (more frequently in dusty conditions)
Spark Plug Inspection:
Every 600 miles (1000 km) or 6 months
Gear Oil Change:
Every 1200 miles (2000 km) or 12 months
Fluid Specifications
Engine Oil:
Yamalube 4 (or SAE 10W-30 API SE, SF, SG type)
Gear Oil:
Yamalube Gear Oil (or SAE 80 API GL-4)
Brake Fluid:
DOT 3 or DOT 4 (check manual for specific recommendation)
Known Issues
Common Wear Items:
Brake shoes/pads, tires, spark plug, air filter, drive belts (if applicable to later models), wheel bearings.
Potential Problems:
Carburetor cleaning/adjustment may be needed over time, especially if fuel is left sitting. CDI unit or ignition system issues can occur with age. Suspension wear and tear.
📚 Vehicle History
Brand Heritage
Heritage Focus:
Yamaha has a long-standing reputation for producing reliable and capable powersports vehicles, including ATVs.
Model Evolution
Timberwolf Line:
The Timberwolf series was a popular line of utility ATVs for Yamaha, known for their balance of performance and affordability.
Production
Production Era:
The YFB250FWM was part of Yamaha's ATV lineup in the late 1990s and early 2000s.
🏆 Awards & Recognition
Recognitions
Model Specific Awards:
No specific widely publicized awards for this particular model year and variant are readily available, but the Timberwolf line was generally well-regarded for its utility.
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