Be Your Own Mechanic: CRF250R Motocross Motorcycle Service Manual, covers 2010-2013

Honda CRF250R Motocross Motorcycle (2010-2013) Service & Repair Manual

Master the maintenance of your machine with the definitive technical authority for the Honda CRF250R. This professional-grade service manual is the exact resource used by factory technicians to keep Honda’s legendary 249cc liquid-cooled four-stroke motocrosser at peak performance. Spanning the critical 2010 to 2013 model years, this guide provides the deep-dive technical data and step-by-step clarity required for everything from trackside tuning to a full engine rebuild.

Model Applications & Identification

This manual is specifically engineered for the following Honda CRF250R model years:

• CRF250R (2010)
• CRF250R (2011)
• CRF250R (2012)
• CRF250R (2013)

To ensure you are using the correct specifications for your specific build, the manual includes detailed location guides for:

• Vehicle Identification Number (VIN): Stamped on the right side of the steering head.
• Engine Serial Number: Located on the lower left side of the crankcase.
• Throttle Body ID Numbers: Critical for PGM-FI calibration (GQD2A for '10-'11, GQ26A for '12, and GQ28A for '13 models).

Comprehensive Technical Coverage

Go beyond basic "how-to" books. This manual provides exhaustive data on every system of the CRF250R:

• Advanced Fuel Injection (PGM-FI): Complete diagnostic and service procedures for the throttle body, fuel pump, and electronic sensors (ECT, IAT, MAP, and TP). It includes a full index of Diagnostic Trouble Codes (DTC) to identify system errors immediately.
• Engine & Valve Train: Precise specs for cylinder head warpage (limit 0.05mm), valve clearances (IN: 0.12mm / EX: 0.28mm), and cylinder compression (598 kPa/87 psi at cranking).
• Suspension Mastery: Detailed teardown and rebuild instructions for the telescopic front forks and Pro-Link rear suspension. Covers oil capacities (ranging from 342cm³ to 372cm³ depending on the year) and damping adjuster standard positions.
• Chassis & Drive Train: Full specifications for the 5-speed constant mesh transmission, clutch system (including judder spring updates after 2010), and drive chain slack (30-40mm for '10-'11; 25-35mm for later models).
• Electrical Systems: High-resolution wiring diagrams, ignition timing data (8° BTDC at idle), and peak voltage testing for the CKP sensor and ignition coil.

Professional Features & Value

• Precise Torque Values: Comprehensive tables for every fastener, ensuring your bike is assembled to factory safety standards (e.g., 128 N-m for the rear axle nut).
• Lubrication & Seal Points: Expert maps for applying molybdenum oil solutions, multi-purpose grease, and silicone sealants to prevent premature wear.
• Advanced Troubleshooting: Logical flowcharts to solve hard-start issues, engine power loss, or poor handling characteristics before they ruin your race day.
• Maintenance Schedule: Race-specific intervals (every 2.5 to 30 hours) designed for high-performance riding conditions.

Equip your garage with the technical knowledge required to maintain the precision engineering of your Honda CRF250R. From the Unicam engine to the HPSD (Honda Progressive Steering Damper), every component is covered with absolute accuracy.