Yamaha YZ250(P)/LC, YZ250, YZ250P1 & YZ250LC Competition Motocross Machine Owner's Service Manual 2001-2002
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Purchase Information
2001-2002 Yamaha YZ250(P)/LC, YZ250, YZ250P1 & YZ250LC Service Manual - Technical Specifications
- Document Number / Seller:
- 26139 / Emily Diaz
- File Size:
- 15.16 MB
- File Type:
- Language:
- English, Italian, German, French
- Pages:
- 584
- Printable:
- Yes
- Estimated Download Time:
- 0.31 Minutes
- Delivery Format:
- Digital (PDF) - Instant Access
- Category:
- Bike
- Brand:
- Yamaha
- Reviewed and Approved:
- Dec 26, 2025
Yamaha Models and Parts Covered in this Bike Manual
- YZ250(P)/LC (2002)
- YZ250 (2002)
- YZ250P1 (2002)
- YZ250LC (2002)
Complete Manual Information
Yamaha YZ250 (P)/LC Competition Motocross Machine Owner's Service Manual 2001-2002
Master the performance and reliability of your Yamaha YZ250 with the official 1st Edition Owner's Service Manual. This comprehensive reference is the same technical guide used by professional mechanics, covering the 2002 model year "P" series and Liquid Cooled (LC) variants. Whether you are racing on a closed course or performing a seasonal overhaul, this manual provides the high-grade craftsmanship insights that have made Yamaha a leader in pacesetting racing machines.
High-Performance Model Coverage
This manual is specifically engineered for the following 2002 Yamaha YZ250 model combinations across global markets:
- YZ250(P)/LC (2002): The primary technical designation for the Liquid Cooled competition series.
- YZ250P1 (2002): Official US-market trade name and designation.
- YZ250LC (2002): European-market trade name for the Liquid Cooled series.
- YZ250 (2002): Standard trade name for the 250cc two-stroke motocross model.
Essential Technical Identification
To ensure you are ordering the correct parts or identifying a machine, this manual references specific series designations:
- Model Code Numbers: 5NX1 (USA, CDN, ZA), 5NX2 (EUROPE), and 5NX4 (AUS, NZ).
- Vehicle Identification (VIN): Stamped on the right side of the steering head pipe.
- Engine Serial Number: Stamped on the elevated portion of the right-side engine case.
Professional-Grade Key Features
- Competition-Focused Tuning: Includes specialized "Chapter 7: Tuning" covering jetting adjustments for the Keihin PWK38S carburetor, YPVS governor settings, and suspension valving.
- Step-by-Step Mechanical Guides: Organized in a sequential, illustrated format for disassembly, repair, assembly, and inspection.
- Exploded View Diagrams: Every removal section begins with detailed exploded diagrams featuring numbered job orders and symbol marks for lubrication points.
- F.I.M. Compliance Specs: Includes official Federation Internationale de Motocyclisme (F.I.M.) minimum weights (98 kg / 216 lb for the 250cc class) and technical dimensions.
- Torque & Tightening Data: Comprehensive charts for every critical fastener, from the cylinder head nuts (25 Nm) to the front wheel axle nut (105 Nm).
Detailed Chapter Breakdown
- General Information: Machine description, control functions (including the primary kick starter and "Engine Stop" button), and break-in procedures.
- Specifications: General, maintenance, and torque specs. Includes specific engine data like the 66.4 x 72 mm bore and stroke and 9.1~10.6:1 compression ratio.
- Regular Inspection & Adjustments: Maintenance intervals for pistons, rings, and the cooling system.
- Engine: Detailed service for the YPVS system, water pump, CDI magneto, and the 5-speed constant-mesh transmission.
- Chassis: Overhaul procedures for the semi-double-cradle frame, telescopic front forks, and the link-type Monocross rear suspension.
- Electrical: Wiring diagrams, ignition system troubleshooting, and TPS (Throttle Position Sensor) testing.
- Tuning: Expert settings for different track conditions, including jet needle (N3EJ/N3CW) and pilot air screw adjustments.
Practical Maintenance Insights
Maximize your bike's lifespan with specific instructions on using Yamaha-specific tools like the Crankcase Separating Tool (YU-1135-A) or the Flywheel Puller (YM-1189). The manual also provides crucial "Pro-Tips" such as using new copper washers for brake unions and applying lithium-soap base grease to oil seal lips to prevent premature wear.
Whether you are a seasoned pro or a privateer rider, this manual is the definitive resource for maintaining the competitive edge of your Yamaha YZ250.
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Frequently Asked Questions - Yamaha Bike Manual
What does this Yamaha manual cover?
This comprehensive service manual covers detailed repair procedures, maintenance schedules, troubleshooting guides, and technical specifications for Yamaha YZ250(P)/LC, YZ250, YZ250P1 & YZ250LC Competition Motocross Machine Owner's Service Manual 2001-2002. It includes information for the following models: - YZ250(P)/LC (2002) - YZ250 (2002) - YZ250P1 (2002) - YZ250LC (2002).
Is this manual suitable for beginners?
Yes, this Yamaha manual is designed for both professional technicians and DIY enthusiasts. It includes step-by-step procedures with clear illustrations and safety guidelines for Bike maintenance and repair.
What file format will I receive?
You will receive this manual as a PDF file (15.16 MB), which is compatible with all devices. The manual is fully searchable and printable for your convenience.
How quickly can I access the manual after purchase?
You'll receive instant access to your Yamaha Bike manual immediately after payment completion. The download link is valid for 3 days, with lifetime re-download guarantee.
Can I print specific sections of the manual?
Absolutely! This digital manual allows you to print any section you need, from individual pages to complete chapters, making it perfect for workshop use.
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