Yamaha WR250F Manual

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Stichworte: Marine Motorcycle Sterndrive WR250F Yamaha

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Beschreibung

The Yamaha WR250F, a distinguished competition off-road motorcycle from 2002, embodies Yamaha's heritage of performance and reliability. Engineered for the rigors of enduro riding, this model features a robust steel semi-double cradle frame, a potent 249cc liquid-cooled 4-stroke engine, and advanced suspension systems designed for optimal control and stability. Its design prioritizes durability and rider confidence, making it a capable machine for enthusiasts and competitive riders alike. This comprehensive Factory Service Manual offers in-depth guidance for the maintenance and repair of your Yamaha WR250F. It covers all essential systems, including the engine, drivetrain, suspension, and electrical components, with detailed procedures for disassembly, reassembly, and component-level repairs. The manual also includes extensive troubleshooting guides, periodic maintenance schedules, and precise technical specifications, empowering owners and technicians to ensure the peak performance and longevity of their vehicle.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

WR250F

Year:

Codes

Model Code:

WR250F

👋 Introduction

Market Position

Vehicle Segment:

Competition Off-road Motorcycle

Target Audience:

Enthusiasts, riders seeking to perform their own maintenance and repairs

Competitive Analysis

Manual Advantage:

Official factory data, comprehensive coverage, digital accessibility, cost savings over dealership service

Key Features

Content Quality:

Authentic dealer-level information

Organization:

Fully indexed for quick reference

Visuals:

Highly detailed illustrations

Economic Benefit:

Enables significant cost savings on maintenance and repairs

📋 Manual Details

Coverage Areas

Engine Repair:

Comprehensive

Drivetrain Repair:

Comprehensive

Suspension Repair:

Comprehensive

Electrical System Repair:

Comprehensive

Chassis Maintenance:

Comprehensive

Bodywork Repair:

Comprehensive

Troubleshooting:

Extensive

Periodic Maintenance:

Detailed

Page Count

Estimated Pages:

Manual Type

Type:

Factory Service Manual (Digital)

Language

Language:

English

Format

Format:

📖 Manual Coverage

Systems Covered

Engine:

249cc Liquid-cooled 4-stroke DOHC 4-valve

Transmission:

Constant mesh 5-speed

Fuel System:

Carburetor (Mikuni BSR33)

Cooling System:

Liquid-cooled with radiator

Ignition System:

Electrical System:

12V DC, lighting, charging system

Suspension Front:

Upside-down telescopic fork

Suspension Rear:

Monocross swingarm

Brakes Front:

Hydraulic disc

Brakes Rear:

Hydraulic disc

Wheels Tires:

Spoked wheels, off-road tire specifications

Frame Chassis:

Steel semi-double cradle frame

Exhaust System:

Stock system details

Procedures Included

Disassembly Reassembly:

Complete engine, transmission, suspension, brakes, electrical components

Maintenance Tasks:

Oil changes, filter replacements, spark plug service, chain adjustment, valve clearance checks

Troubleshooting Guides:

Diagnosis of common starting, running, and electrical issues

Repair Instructions:

Component-level repair and replacement procedures

Specifications Settings:

Torque values, clearances, adjustments

Wiring Diagrams:

Complete electrical system schematics

Technical Depth

Depth:

Comprehensive, suitable for DIY mechanics and dealership technicians

Detail Level:

Highly detailed with step-by-step instructions and illustrations

📊 Manual Specifications

File Format

File Type:

Portable Document Format (PDF)

Searchability:

Searchable text content

Print Quality

Printability:

Printable (user discretion)

Binding Type

Binding:

N/A (Digital File)

Paper Type

Paper Quality:

N/A (Digital File)

Software Requirements

Reader Software:

Adobe Acrobat Reader or compatible PDF viewer (free)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Liquid-cooled, 4-stroke, DOHC, 4-valve

Displacement:

249 cc

Bore X Stroke:

76.0 mm x 55.0 mm

Compression Ratio:

12.5:1 (Typical for this era WR250F)

Performance

Horsepower Estimate:

Approx. 30-35 HP (at crankshaft, varies with tuning)

Torque Estimate:

Approx. 24-26 Nm (at crankshaft, varies with tuning)

Fuel System

Carburetor Model:

Mikuni BSR33

Fuel Type:

Unleaded gasoline (minimum 91 octane recommended)

Lubrication

Oil Type:

Yamalube 4 (or equivalent API SG, SAE 10W-40)

Oil Capacity With Filter:

1.00 L (1.06 US qt)

🔧 Transmission

Standard

Type:

Constant mesh 5-speed

Clutch Type:

Wet, multi-plate

Final Drive:

O-ring sealed chain

Features

Gear Ratios:

Details within manual

Transmission Oil Type:

Yamalube 4 (or equivalent API SG, SAE 10W-40)

Transmission Oil Capacity:

0.75 L (0.79 US qt)

📐 Dimensions

Exterior

Overall Length:

2175 mm (85.6 in)

Overall Width:

825 mm (32.5 in)

Overall Height:

1270 mm (50.0 in)

Seat Height:

970 mm (38.2 in)

Wheelbase:

1470 mm (57.9 in)

Ground Clearance:

360 mm (14.2 in)

Weights

Wet Weight:

114 kg (251.3 lbs)

Fuel Tank Capacity:

9.0 L (2.4 US gal)

🛡️ Safety Features

Ratings

Vehicle Type Safety:

Off-road competition motorcycle; safety is rider-dependent and focused on mechanical integrity

Active Features

Brakes:

Powerful hydraulic disc brakes front and rear for reliable stopping power

Suspension:

Performance-oriented suspension designed for stability and control in off-road conditions

Passive Features

Frame Construction:

Robust steel frame designed for durability and rider confidence

Ergonomics:

Designed for optimal rider control and positioning

💡 Technology Features

Infotainment

System:

N/A (Pure off-road competition focus)

Driver Assistance

Features:

N/A (Pure off-road competition focus)

Connectivity

Features:

N/A (Pure off-road competition focus)

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 1000 km (600 miles) or 3 months, more frequently under severe use.

Air Filter Cleaning:

Every 500 km (300 miles) or as needed based on dust conditions.

Spark Plug Inspection:

Every 1000 km (600 miles).

Valve Clearance Check:

Every 4000 km (2500 miles).

Chain Lubrication Adjustment:

Every 500 km (300 miles) or after riding in wet conditions.

Fluid Specifications

Engine Oil:

Yamalube 4 (or equivalent API SG, SAE 10W-40)

Transmission Oil:

Yamalube 4 (or equivalent API SG, SAE 10W-40)

Coolant:

Permanent type antifreeze coolant (50% solution with distilled water)

Brake Fluid:

DOT 3 or DOT 4

Known Issues

Common Wear Items:

Clutch plates, chain and sprockets, fork seals, wheel bearings (typical for off-road use)

Carburetor Tuning:

May require periodic adjustment or cleaning due to off-road conditions

📚 Vehicle History

Brand Heritage

Manufacturer:

Yamaha Motor Company

Brand Specialty:

Renowned for performance motorcycles, including motocross and enduro models

Model Evolution

Wr250F Lineage:

The WR250F series is Yamaha's dedicated off-road competition enduro model, evolving from their motocross heritage.

2002 Model Significance:

Represents a key iteration in Yamaha's pursuit of competitive enduro performance, featuring advanced technology for its time.

Production

Manufacturing Country:

Japan

🏆 Awards & Recognition

Recognitions

Model Accolades:

Yamaha's WR series is consistently recognized for its performance and reliability in enduro racing and trail riding.