🏷️ Basic Information

Make:

Yamaha

Model:

YZ250F

Year:

2009

Model Code:

YZF250

Engine Code:

Not explicitly stated, but typically a variant of the 1WD engine family for this model.

👋 Introduction

Market Position:

The Yamaha YZ250F has historically been a dominant force in the 250cc four-stroke motocross segment, known for its powerful engine and competitive chassis. The 2009 model continued this legacy.

Competitors:

Key competitors for the 2009 YZ250F included the Honda CRF250R, Kawasaki KX250F, and KTM 250 SX-F.

Key Features:

The 2009 YZ250F featured a liquid-cooled, DOHC, four-valve, four-stroke engine, aluminum frame, advanced suspension components, and a focus on mass centralization for improved handling.

Manual Value Proposition:

This manual provides comprehensive, factory-level information enabling owners and technicians to perform all necessary maintenance, troubleshooting, and repair tasks, saving time and money compared to dealership service.

📋 Manual Details

Primary Coverage:

Repair, service, maintenance, restoration, rebuilding, and diagnosis of the 2009 Yamaha YZ250F (YZF250).

Page Count:

275 pages

Manual Type:

Factory Service Manual / Repair Manual / Workshop Manual

Language:

English (implied by product description and typical market)

Format:

Digital Download (PDF, ZIP, RAR, or EXE)

📖 Manual Coverage

Engine:

Complete teardown and rebuild, internal components, lubrication, cooling, timing, valve clearance, fuel system (carburetor, fuel pump, mixture screw), ignition system, starting system (kickstart, starter motor, magneto), exhaust system, cylinder, piston, crankshaft, connecting rod, cams, valves, flywheel.

Transmission:

Gearbox, primary reduction gear, gearshift mechanism, clutch (operation, adjustment, repair), lubrication.

Chassis And Suspension:

Frame, swingarm (swinger), forks (front suspension, including hydraulic adjustments), rear shock absorber (strut), linkage, steering, triple tree, handlebars, wheels, axles, bearings.

Brakes:

Front and rear brakes, hydraulic system, brake pads, rotors, caliper operation, bleeding procedures.

Electrical System:

Charging system (stator, rectifier, regulator), lighting, ignition coil, battery maintenance, wiring diagrams (schematic), switches, sensors.

Bodywork And Plastics:

Panels, fenders, seat, fuel tank, airbox, plastic components, graphics.

Maintenance:

Scheduled maintenance, fluid changes (coolant, oil), filter replacement, chain adjustment, tire pressure, lubrication schedule, valve clearance checks and adjustments, spark plug replacement.

Troubleshooting:

Diagnostic procedures for common problems, identifying issues such as no spark, starting problems, engine misfires, electrical faults, suspension issues, brake problems. Includes error code interpretation if applicable (though less common for this era carbureted model).

Repair And Rebuild:

Detailed step-by-step instructions for disassembling and reassembling all major components, including engine, transmission, suspension, brakes, and electrical systems. Overhaul procedures for major assemblies.

Installation:

Instructions for installing new or replacement parts, including aftermarket upgrades if specified.

Depth:

Comprehensive, covering basic maintenance to complete engine and component rebuilding. Includes detailed torque specifications, clearances, and diagnostic data essential for professional-level service and DIY enthusiasts.

Illustrations:

Includes clear, step-by-step illustrations, pictures, and part diagrams (exploded views) for all procedures.

📊 Manual Specifications

File Format:

PDF (Portable Document Format) is the standard. May be delivered compressed (ZIP/RAR) for larger files or as an executable (EXE) depending on the provider.

Searchable Text:

Typically Yes for PDF files, allowing for quick text searches of specific terms or components.

Zoomable Illustrations:

Yes, standard feature for PDF manuals, allowing detailed examination of diagrams.

Print Quality:

Designed to be printable. PDF quality is typically high, allowing for clear reproduction of text and illustrations.

Binding Type:

Not applicable for digital download. If printed, would typically be coil-bound or saddle-stitched for ease of use.

Paper Type:

Not applicable for digital download. Original factory manuals often use durable, coated paper for workshop environments.

⚙️ Engine Specifications

Engine Type:

Liquid-cooled, DOHC, four-stroke, single-cylinder

Displacement:

249cc

Bore X Stroke:

77.0 mm x 53.6 mm

Compression Ratio:

12.5:1

Valvetrain:

DOHC, 4 valves (titanium intake valves)

Valve Clearance Intake:

0.10 - 0.15 mm (cold)

Valve Clearance Exhaust:

0.15 - 0.20 mm (cold)

Horsepower:

Estimated 38-40 HP (at crankshaft, unconfirmed specific figure for this year without manual)

Torque:

Not readily available, but typically in the 20-25 lb-ft range.

Carburetor:

Keihin FCR39 (Flat CR Special) with Accelerator Pump

Fuel Type:

Unleaded gasoline

Fuel Tank Capacity:

2.1 US gallons (8.0 Liters)

Engine Oil Type:

Yamalube (or equivalent) 10W-40 API SG or higher motorcycle oil. Specific grade confirmed in manual.

Engine Oil Capacity:

1.10 US qt (1.04 L) with filter change. 0.98 US qt (0.93 L) without filter change. Check manual for precise figures.

Ignition System:

Digital CDI (Capacitor Discharge Ignition)

Starting Method:

Kickstart

Cooling Method:

Liquid-cooled

Coolant Type:

High-quality, pre-diluted ethylene glycol based motorcycle coolant. Check manual for specific Yamaha coolant part number.

Coolant Capacity:

Approx. 0.67 US qt (0.63 L) (Check manual for exact specification)

🔧 Transmission

Transmission Type:

Constant-mesh, 5-speed

Clutch Type:

Wet, multi-plate

Transmission Oil Type:

Yamalube (or equivalent) 10W-40 API SG or higher motorcycle oil (same as engine oil).

Transmission Oil Capacity:

Included in engine oil capacity; refer to manual for precise transmission lubrication check procedure.

Primary Drive:

Gear

Final Drive:

O-ring sealed chain

📐 Dimensions

Length:

Approx. 81.7 inches (2075 mm)

Width:

Approx. 32.1 inches (815 mm)

Height:

Approx. 50.6 inches (1285 mm)

Dry Weight:

Approx. 218 lbs (99 kg)

Wet Weight:

Not officially stated, but typically around 230-240 lbs with all fluids.

Wheelbase:

Approx. 57.7 inches (1465 mm)

Ground Clearance:

Approx. 14.4 inches (365 mm)

Seat Height:

Approx. 38.4 inches (975 mm)

🛡️ Safety Features

Safety Ratings:

Not applicable to off-road competition motorcycles in the same way as street-legal vehicles. Safety is inherent in design for performance and durability.

Active Safety:

Performance braking system, responsive suspension, chassis design for stability and control.

Passive Safety:

Robust frame construction, durable plastics, rider ergonomics designed for secure control.

💡 Technology Features

Infotainment System:

Not applicable. This is a motocross bike with no standard infotainment features.

Driver Assistance:

Not applicable. This is a motocross bike with no electronic rider aids.

Connectivity:

Not applicable.

Engine Management:

Basic CDI ignition system. Carburetor tuning is the primary method for engine performance adjustment. No complex ECU mapping or fuel injection.

🔧 Maintenance

Oil Change Interval:

Every 15-20 hours of riding, or as specified by severe use conditions. Check manual for exact recommendation.

Air Filter Cleaning:

After every few rides, or more frequently in dusty conditions. Crucial for engine longevity.

Valve Adjustment Interval:

Recommended every 20-30 hours of riding, or based on performance degradation. Crucial for maintaining optimal engine performance.

Spark Plug Replacement:

Check at 15-20 hour intervals, replace as needed. Use the specified NGK plug (e.g., CR9E).

Engine Oil Spec:

Yamalube 10W-40 API SG or higher.

Coolant Spec:

Ethylene glycol based, pre-diluted motorcycle coolant.

Brake Fluid Spec:

DOT 3 or DOT 4 brake fluid (check manual for specific type and part number).

Common Issues 2009 Yz250F:

Potential for clutch wear over time, carburetor jetting sensitivity to altitude/temperature, valve seat wear with high hours. Regular maintenance is key to mitigating these.

Maintenance Schedule Summary:

The manual provides a detailed maintenance schedule, typically broken down by operating hours or calendar time, covering all critical systems for optimal performance and reliability.

📚 Vehicle History

Brand Heritage:

Yamaha has a long and successful history in motocross, with the YZ line being a cornerstone of their off-road racing efforts since the 1970s.

Model Evolution 2009:

The 2009 model saw refinements in suspension settings, chassis tuning, and engine mapping over previous generations, aiming to maintain its competitive edge in the highly contested 250cc class.

Production Location:

Typically manufactured in Japan.

🏆 Awards & Recognition

Recognitions:

The YZ250F line consistently receives praise and awards in motocross publications for its performance and handling. Specific awards for the 2009 model would be found in contemporary magazine reviews.