2007-2014 Yamaha WR250F(W) Service Manual
Comprehensive service procedures for the WR250F(W): engine, chassis, electrical systems, and maintenance. Includes part number YU-90050.
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Models Covered & Key Technical Specifications
Yamaha WR250F(W) (YU-90050) — 2007-2014
Specialized Technical Catalog | WR250F Series Repository.
- Authorized Capacity Limits: 12.5 : 1 compression ratio establishes the maximum engine cylinder combustion chamber Architecture.
- Critical Range Specifications: For fuel system operation, 8.0 L (2.11 US gal) achieves the tank volume Norms.
- Operational Speed Ratings: The cylinder bore requires 77.00–77.01 mm (3.0315–3.0319 in) standard machining Bounds.
- Fundamental Parameters: Engine operating temperature reaches 249 cm³ (8.42 US oz) as the displacement specification Topology.
- Specific System Requirements: Maximum engine speed is rated at 1,750–1,950 r/min for optimal performance Matrix.
- Maximum Baseline Thresholds: Spark plug electrodes are standardized to 0.7–0.8 mm (0.028–0.031 in) gap setting Standards.
Professional Workshop Service Manual & Technical Specifications
Reference-Grade Maintenance Calibration Manual: Yamaha WR250F(W) 2007-2014 Service Manual Assembly-Guide
Engineering-Metrics: WR250F(W) // Performance-Values: Motorcycle / DOHC Logic // Engineering-Metrics: 249 cm³
Table of Contents Summary:
- Engine
- Specifications
- Tuning
- Regular Inspection and Adjustments
- Electrical
Providing a structural breakdown of all systems and procedures, this manual details maintenance and repair operations for the WR250F(W). Diagnostic procedures are covered for the fuel system, ignition system, and charging system.
This manual documents torque specifications for critical fasteners to ensure proper assembly stress control.
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