2001 Yamaha YZ250FN Service Manual - Comprehensive Maintenance, Repair & Tuning Guide
Field service reference for the YZ250FN — print engine, chassis, electrical, and tuning systems. PN YU-1304/90890-01304
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Models Covered & Key Technical Specifications
Yamaha YZ250FN (USA) / YZ250FLC (EUROPE) / YZ250F(N) (CDN, AUS, NZ, ZA) (2001) Specialized Specialized Collection. | YZ250FN Motorcycle
- Nominal Maximum Resolution: 249 cm³
- Prescribed Assembly Torques: 10 Nm
- System Capacity Limits: 0.9 L
- Technical Energy Draw: 4 Nm
- Standard Burn-in Temperature: 5 Nm
- Defined Optical Resolution: 12 Nm
Professional Workshop Service Manual & Technical Specifications
Consolidated Factory Training Manual: Motorcycle Yamaha YZ250FN Service Manual (2001) - Comprehensive Maintenance, Repair & Tuning Guide Blueprint-Vault
Asset-ID: YU-1304/90890-01304 // Architecture-Focus: Motorcycle Chassis and Engine Systems Logic // Specification-Class: Maintenance & Repair Procedures
| Assessment-Element | System-Path | Calibration-Standards |
|---|---|---|
| Cylinder Bore | 77.00 ~ 77.01 mm | 0.05 mm (0.002 in) |
| Piston Skirt Diameter | 76.955 ~ 76.970 mm | 0.1 mm (0.004 in) |
| Piston-to-Cylinder Clearance | 0.040 ~ 0.065 mm | 0.1 mm (0.004 in) |
| Valve Clearance (Intake) | 0.10 ~ 0.15 mm | 1.6 mm (0.0630 in) |
| Valve Clearance (Exhaust) | 0.17 ~ 0.22 mm | 1.6 mm (0.0630 in) |
| Valve Seat Width (Intake) | 0.9 ~ 1.1 mm | 1.6 mm (0.0630 in) |
Engineering chapters address: Maintenance Intervals, Engine Specifications, Chassis Systems, Electrical Components, and Tuning Procedures. Detailed procedures cover carburetor adjustment, valve clearance checks, clutch operation, and brake system bleeding. Torque specifications are provided for critical engine and chassis fasteners, ensuring proper assembly and performance.
Procedures and System Documentation
Professionally requiring systematic documentation, this manual details essential maintenance schedules and component specifications. It outlines diagnostic procedures for the ignition system, fuel delivery, and lubrication systems, ensuring comprehensive coverage for all critical operational aspects. Technical guidelines are included for disassembly and assembly sequences.
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