Segment:
Competition Enduro Motorcycle
Target Audience:
Enthusiasts and owners seeking to perform maintenance, repairs, and modifications on their Yamaha WR250F.
Competitors:
Honda CRF250X, Kawasaki KX250F (off-road variant), KTM 250 EXC.
Engine Type:
Liquid-cooled, four-stroke, DOHC, single-cylinder
Suspension Type:
Upside-down telescopic front fork, linkage-type rear suspension
Illustrations:
Detailed, clear, step-by-step illustrated instructions.
Completeness:
Highly comprehensive, offering a complete guide to servicing and repairing the motorcycle.
Systems Covered:
Engine, Fuel System, Cooling System, Chassis, Suspension, Brakes, Electrical System, Troubleshooting, Specifications.
Estimated Page Count:
Approximately 300-400 pages (typical for this type of comprehensive manual).
Type:
Service Repair Workshop Manual
Format:
Digital Download (PDF)
Engine:
Complete disassembly, assembly, inspection, and repair of the 250cc four-stroke engine.
Fuel System:
Carburetor (Teikei Y28P) inspection, cleaning, adjustment, and overhaul; fuel tank and lines.
Cooling System:
Radiator, coolant, hoses, water pump inspection and service.
Transmission:
Clutch inspection, adjustment, and replacement; gear shift mechanism; transmission disassembly and assembly.
Chassis And Suspension:
Frame inspection, fork (upside-down telescopic) maintenance, rear shock absorber service, linkage maintenance.
Brakes:
Hydraulic disc brake system (front and rear) inspection, pad replacement, caliper service, master cylinder overhaul, fluid replacement.
Electrical System:
Ignition system (CDI), lighting, battery, starter motor, wiring diagrams, troubleshooting electrical faults.
Wheels And Tires:
Wheel bearing inspection, tire pressure, tire replacement, spoke adjustment.
Bodywork And Trim:
Fairings, seat, handlebars, controls, and other body components.
Maintenance:
Routine inspections, lubrication, filter changes, fluid checks and replacements, spark plug replacement, valve clearance adjustment.
Troubleshooting:
Diagnostic procedures for common performance issues, starting problems, and electrical faults.
Repair:
Step-by-step instructions for disassembling, repairing, and reassembling all major mechanical and electrical components.
Overhaul:
Detailed overhaul procedures for the engine, transmission, forks, and brake systems.
Specifications:
Torque specifications for all fasteners, engine clearances, fluid capacities, electrical resistance values.
Depth:
Comprehensive, covering everything from basic maintenance checks to complete engine rebuilds and complex electrical diagnostics.
Engine Type:
Liquid-cooled, four-stroke, DOHC, 4-valve, single-cylinder
Bore X Stroke:
77.0 mm x 53.6 mm
Compression Ratio:
12.5:1 (Typical for this model, verify with manual)
Horsepower:
Approx. 30-35 HP (at crankshaft, varies by market and tuning)
Torque:
Approx. 20-22 Nm (at crankshaft, varies by market and tuning)
Carburetor Type:
Teikei Y28P (28mm constant velocity carburetor)
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Oil Type:
Yamaha Genuine Oil API SG, SF, or SE SAE 10W-40 or 20W-50 (refer to manual for precise specification)
Ignition System:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Liquid-cooled
Length:
Approx. 2,170 mm (85.4 in)
Width:
Approx. 825 mm (32.5 in)
Height:
Approx. 1,295 mm (51.0 in)
Wheelbase:
Approx. 1,475 mm (58.1 in)
Dry Weight:
Approx. 107 kg (235.9 lbs)
Wet Weight:
Approx. 117 kg (257.9 lbs) (with all fluids)
Fuel Capacity:
Approx. 9.5 liters (2.5 US gal)
Safety Standards:
Designed to meet relevant off-road safety regulations for its class. Specific crash test ratings are not typically applicable to this type of motorcycle.
Brakes:
Powerful hydraulic disc brakes front and rear for effective stopping power.
Suspension:
High-performance suspension provides stability and control over varied terrain.
Ergonomics:
Designed for rider control and maneuverability.
Features:
Basic instrumentation: speedometer, odometer, trip meter, engine hour meter, neutral indicator, oil warning light. No advanced infotainment features.
Features:
No electronic rider aids such as ABS or traction control. Focus is on mechanical performance and rider input.
Features:
No connectivity features. This is a pure off-road performance machine.
Oil Change Interval:
Every 1,000 km or 6 months (whichever comes first), or more frequently under severe use (refer to manual for exact recommendation).
Air Filter Cleaning:
Every 500 km or as needed, especially in dusty conditions.
Spark Plug Inspection:
Every 2,000 km.
Valve Clearance Check:
Every 4,000 km.
Engine Oil Capacity:
1.70 liters (without oil filter change), 1.80 liters (with oil filter change).
Coolant Type:
High-quality ethylene glycol-based coolant (50% solution with distilled water).
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Common Wear Items:
Clutch plates, brake pads, chain and sprockets, wheel bearings, fork seals.
Carburetor Tuning:
Can require fine-tuning based on altitude and temperature for optimal performance.
Engine Oil Drain Plug:
25 Nm (18 lb-ft)
Front Axle Nut:
64 Nm (47 lb-ft)
Rear Axle Nut:
98 Nm (72 lb-ft)
Brand Legacy:
Yamaha has a long and successful history in off-road motorcycle racing and production, known for innovation and performance.
Wr250F Lineage:
The WR250F is Yamaha's dedicated off-road competition model, evolving from earlier motocross and enduro designs, focusing on enhanced durability and trail capability.
Production Period:
The WR250F has been in continuous production for many years, with the 2007 model representing a specific iteration of this line.
Industry Standing:
The WR250F line is consistently praised for its reliability, performance, and capability in its class.
Owner Satisfaction:
Generally high owner satisfaction due to its robust design and proven performance.
Emissions:
Designed to meet relevant emissions standards for off-road motorcycles in its production year.
