2007 Yamaha YZ250FW Owner's Service Manual

Technical reference spanning diagnostics, removal sequences, and maintenance for the YZ250FW: engine, chassis, electrical systems, and tuning procedures. YAM103456

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Document Details

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Document Number / Seller:
29939 / Steven Morgan
File Size:
7.65 MB
File Type:
PDF
Language:
English
Pages:
305
Printable:
Yes
Category:
Bike
Last updated / verified
Sep 10, 2025

Models Covered & Key Technical Specifications

Reference-Grade Instructional Field Manual: Bike Yamaha YZ250FW Service Manual - Comprehensive Maintenance & Repair (2007) Powertrain-Manual

Factory Engine Specs: 249 cm3 signifies the displacement capacity Standard. Essential Cooling System: For optimal engine performance, Liquid cooled 4-stroke, DOHC is specified as the engine type Configuration. Key Ignition System: The ignition system is CDI magneto -- delivering reliable spark generation Baseline. Verified Drive Chain: The drive chain requires 48 ~ 58 mm (1.9 ~ 2.3 in) slack Parameters. Designated Fuel Capacity: For extended operation, 7.0 L (1.54 Imp gal, 1.85 US gal) is the standard fuel tank capacity Requirements. Approved Brake Type: The front brake type is Single disc brake is designed for efficient stopping Threshold.

Professional Workshop Service Manual & Technical Specifications

Reference-Grade Instructional Field Manual: Bike Yamaha YZ250FW Service Manual - Comprehensive Maintenance & Repair (2007) Powertrain-Manual

Engineering-Metrics: YZ250FW (USA, CDN, AUS, NZ) / YZ250F (EUROPE, ZA) Logic // Machine-Range: 2007 / 2007 Logic // Year-Coverage: 2007 Logic.

Engineering chapters address

Chapter 1: GENERAL INFORMATION

  • DESCRIPTION
  • MACHINE IDENTIFICATION
  • IMPORTANT INFORMATION
  • SPECIAL TOOLS

Chapter 2: SPECIFICATIONS

  • GENERAL SPECIFICATIONS
  • MAINTENANCE SPECIFICATIONS
  • GENERAL TORQUE SPECIFICATIONS

Chapter 3: REGULAR INSPECTION AND ADJUSTMENTS

  • MAINTENANCE INTERVALS
  • ENGINE

This manual documents procedures for disassembly, repair, assembly, and inspection operations, providing a comprehensive reference for mechanics. It covers all essential systems, including:

ENGINE OVERVIEW

The engine sections detail components like the cylinder head, camshafts, valves, and crankshaft, including specifications for wear and proper assembly. The manual documents torque specifications for critical engine components to ensure proper seal compression uniformity.

CHASSIS AND SUSPENSION

Information on the chassis and suspension systems is included, covering steering, front fork, rear shock absorber, and wheel inspection. Procedures for adjusting rebound damping force are documented to ensure optimal handling and stability.

ELECTRICAL AND IGNITION SYSTEMS

This section details the electrical components, ignition system, CDI magneto, and spark plug inspection. It provides guidance on checking coil resistance and timing light settings for accurate ignition timing.

MAINTENANCE AND LUBRICATION

The manual outlines regular maintenance intervals for various components, including oil changes, filter replacement, and lubrication points. It specifies the correct lubricants and procedures for maintaining smooth operation of all parts.

FAQ

Determine the **specific** torque specifications for the engine mounting bolts? keyboard_arrow_down

85 N·m (8.5 m·kg, 61 ft·lb) is required for the lower engine mounting bolt, and 53 N·m (5.3 m·kg, 38 ft·lb) for the upper engine mounting bolt.

What **designated** safety precautions are noted for brake system bleeding? keyboard_arrow_down

A dangerous loss of braking performance may occur if the brake system is not properly bled; therefore, ensure proper procedure.

Check the **critical** lubrication requirements for the camshaft assembly? keyboard_arrow_down

Apply molybdenum disulfide oil on the camshafts and engine oil on the decompression system before installation.

What does the **required** valve clearance measurement process involve? keyboard_arrow_down

0.10 ~ 0.15 mm (0.0039 ~ 0.0059 in) for the intake valve and 0.17 ~ 0.22 mm (0.0067 ~ 0.0087 in) for the exhaust valve.

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This manual is a must-have for anyone owning a YZ250F. The detailed instructions and diagrams make maintenance a breeze!