Yamaha WR250F (X) 2008 Service & Repair Manual

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Tipo: Motorcycle

Proveedor:

SKU: 120665

Etiquetas: 2008 Marine Motorcycle Sterndrive WR250F WR250FX Yamaha

Variantes de producto

Descripción

The 2008 Yamaha WR250F X (Supermoto) represents a capable and performance-oriented machine, blending off-road heritage with street-legal agility. This model features a robust 250cc liquid-cooled, four-stroke engine with DOHC and five-valve configuration, paired with a responsive Keihin FCR39 flatslide carburetor. Its chassis is built upon a rigid aluminum bilateral beam frame, complemented by advanced Kayaba suspension components, including a 46mm Speed-Sensitive System (SSS) upside-down telescopic front fork and a fully adjustable Kayaba Monocross single shock. The WR250X variant is distinguished by its street-biased tires and wheels, hydraulic disc brakes front and rear, and a minimalist design focused on performance and rider engagement, making it suitable for spirited riding and daily commuting. This comprehensive Service & Repair Manual for the 2008 Yamaha WR250F X provides in-depth technical information essential for maintaining and repairing the motorcycle. It covers a wide array of systems, including detailed procedures for engine service, fuel and ignition systems, cooling, exhaust, transmission, chassis, suspension, brakes, wheels, tires, and the electrical system. The manual offers step-by-step guidance on routine maintenance, troubleshooting common issues, engine rebuilds, suspension overhauls, brake system servicing, and carburetor adjustments. With factory-level accuracy and advanced diagnostic procedures, including torque specifications and clearance measurements, this manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, reliability, and longevity of their WR250F X.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

WR250F

Model Variant:

X (Supermoto)

Year:

Codes

Chassis Code:

👋 Introduction

Market Position

Category:

Off-Road Competition/Dual-Sport (Supermoto Variant)

Target Audience:

Enthusiast riders, mechanics, and owners requiring in-depth knowledge for maintenance and repair.

Competitive Analysis

Competitors 2008:

KTM 250 EXC, Honda CRF250X, Kawasaki KLX250S, Suzuki DR-Z250.

Key Features Vehicle

Engine Type:

Liquid-cooled, DOHC, four-stroke, five-valve, single-cylinder.

Frame Type:

Aluminum, bilateral beam.

Suspension Front Type:

46mm Kayaba Speed-Sensitive System (SSS) upside-down telescopic fork.

Suspension Rear Type:

Fully adjustable Kayaba Monocross single shock.

Brake System:

Hydraulic disc brakes front and rear (WR250X features street-biased tires and wheels).

Key Features Manual

Value Proposition:

Empowers owners with comprehensive, factory-level repair and maintenance knowledge for optimal performance and longevity.

Content Reliability:

Based on official Yamaha service documentation, ensuring accuracy and adherence to factory specifications.

📋 Manual Details

Coverage Areas

Manual Type:

Service & Repair Manual

Language:

English

Format:

Digital Download (PDF)

Delivery Method:

Instant Download Link via Email

Merchant Verification:

Highly Verified

📖 Manual Coverage

Systems Covered

Engine:

Complete internal and external engine service, including disassembly, inspection, repair, and reassembly of all components.

Fuel System:

Carburetor tuning, cleaning, and overhaul; fuel tank inspection and repair; fuel line maintenance.

Ignition System:

Spark plug specifications, ignition coil testing, CDI unit diagnostics, and timing adjustments.

Cooling System:

Radiator service, coolant specifications and capacity, water pump inspection and repair, thermostat operation.

Exhaust System:

Muffler and pipe inspection, gasket replacement, and exhaust mounting hardware.

Transmission:

Clutch inspection, adjustment, and replacement; gearbox disassembly and reassembly; gear ratio information.

Chassis And Frame:

Frame inspection for damage, steering head bearing maintenance, and sub-frame component service.

Suspension Front:

Fork disassembly, seal replacement, oil type and level specifications, spring rate information, and adjustability.

Suspension Rear:

Monoshock inspection, linkage service, shock absorber overhaul and adjustment, spring replacement.

Brakes Front:

Brake caliper service, pad replacement, rotor inspection and specifications, hydraulic system bleeding.

Brakes Rear:

Brake caliper service, pad replacement, rotor inspection and specifications, hydraulic system bleeding.

Wheels And Tires:

Spoke tension adjustment, rim inspection, tire pressure recommendations, and wheel bearing maintenance.

Electrical System:

Wiring diagrams, battery specifications, charging system testing, lighting system service, starter motor operation.

Bodywork And Plastics:

Panel removal and installation, decal application, and fairing repair.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, chain lubrication and adjustment, air filter cleaning/replacement, spark plug checks, brake fluid checks.

Troubleshooting:

Diagnostic procedures for common starting issues, performance problems, electrical faults, and unusual noises.

Engine Rebuild:

Detailed instructions for piston, ring, cylinder, valve train, and crankshaft service and replacement.

Suspension Overhaul:

Step-by-step guide for replacing fork seals, shock absorber components, and linkage bearings.

Brake System Service:

Complete brake pad and rotor replacement, caliper piston service, and hydraulic system flushing and bleeding.

Carburetor Adjustment:

Detailed instructions for idle speed, main jet, pilot jet, and needle adjustments for optimal performance.

Electrical Diagnostics:

Guidance on using multimeters for testing components and tracing electrical faults using provided diagrams.

Clutch Replacement:

Service procedures for clutch plates, springs, and basket.

Technical Depth

Depth:

Comprehensive (covering from basic maintenance to full engine and component rebuilds).

Diagnostic Capabilities:

Advanced diagnostic procedures and troubleshooting flowcharts.

Torque Specifications:

Detailed torque values for all critical fasteners and bolts.

Measurements:

Precise measurements for engine clearances, component wear limits, and tolerances.

📊 Manual Specifications

File Format

Format:

Searchable Text:

Yes (typically for professionally produced PDFs)

Print Quality

Quality:

High Resolution (suitable for printing)

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

250cc Liquid-cooled, four-stroke, DOHC, 5-valve, single-cylinder.

Bore X Stroke:

77.0 mm x 53.6 mm

Displacement:

250 cc

Compression Ratio:

12.5:1

Carburetion:

Keihin FCR39 Flatslide Carburetor with TPS (Throttle Position Sensor).

Performance

Horsepower Estimated:

Approx. 30-33 HP (at crankshaft, depending on tuning and exhaust)

Torque Estimated:

Approx. 17-19 lb-ft (at crankshaft)

Fuel System

Fuel Type:

Unleaded gasoline

Fuel Tank Capacity:

2.1 gallons (7.9 Liters)

Fluid Specifications

Engine Oil Type:

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

Engine Oil Capacity:

1.10 liters (when filter is changed)

Coolant Type:

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

🔧 Transmission

Standard

Transmission Type:

Constant mesh 5-speed sequential.

Clutch Type:

Wet, multi-disc

Features

Gear Ratios:

1st: 2.571 (36/14), 2nd: 1.857 (26/14), 3rd: 1.400 (21/15), 4th: 1.136 (25/22), 5th: 0.958 (23/24).

Final Drive:

O-ring sealed chain, 13/50 (428 size).

Fluid Specifications

Transmission Oil Type:

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

Transmission Oil Capacity:

0.58 liters

📐 Dimensions

Exterior

Length:

2,170 mm (85.4 in)

Width:

830 mm (32.7 in)

Height:

1,245 mm (49.0 in)

Seat Height:

960 mm (37.8 in)

Wheelbase:

1,475 mm (58.1 in)

Ground Clearance:

340 mm (13.4 in)

Weights

Curb Weight:

129 kg (284.4 lbs)

Front Tire Size:

110/70-17 M/C 54H (Dunlop Qualifier, for WR250X)

Rear Tire Size:

140/70-17 M/C 66H (Dunlop Qualifier, for WR250X)

Front Brake Type:

250mm Hydraulic Disc

Rear Brake Type:

245mm Hydraulic Disc

🛡️ Safety Features

Ratings

Safety Certification:

N/A (Motorcycle, typically subject to local road regulations for street-legal variants like the WR250X)

Active Features

Braking Performance:

Effective hydraulic disc brakes front and rear provide strong stopping power.

Passive Features

Chassis Stability:

Rigid aluminum frame and compliant suspension contribute to rider confidence.

💡 Technology Features

Infotainment

Infotainment System:

N/A (Minimalist design focused on performance and off-road capability)

Driver Assistance

Assistance Features:

N/A (No electronic rider aids beyond engine management through TPS on carburetor)

Connectivity

Connectivity Features:

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 10 hours of operation or monthly, whichever comes first (under severe use).

Air Filter Cleaning:

Every 5 hours of operation or as needed depending on conditions.

Spark Plug Check:

Every 10 hours of operation.

Valve Clearance Check:

Every 20 hours of operation.

Chain Lubrication Adjustment:

Every 5-10 hours of operation, or as needed.

Known Issues

Common Wear Items:

Clutch plates, brake pads, fork seals, wheel bearings, and valve seats due to off-road use.

Carburetor Tuning Sensitivity:

Can be sensitive to altitude and temperature changes, requiring periodic fine-tuning.

Maintenance Tips

Post Ride Cleaning:

Thorough cleaning after off-road use to prevent dirt ingress into bearings and mechanical parts.

📚 Vehicle History

Brand Heritage

Yamaha Offroad:

Yamaha has a long and successful history in off-road racing and motorcycle development, known for innovation and durability.

Model Evolution

Wr250F Lineage:

The WR250F line has evolved from its motocross counterpart (YZ250F), featuring user-friendly characteristics and off-road prowess. The WR250X is a specific street-oriented variant.

Production

Manufacturing Location:

Japan

🏆 Awards & Recognition

Recognitions

Motorcycle Awards:

While specific awards for the 2008 WR250X model are not prominently documented, the WR250F platform consistently received praise for its performance and handling in off-road and supermoto reviews.