2013–2014 Yamaha YZ250F Owner's Service Manual (P/N 17D-28199-33-E0)

This original OEM PDF publication (P/N 17D-28199-33-E0, first edition April 2012) provides the foundational technical reference for the 2013–2014 Yamaha YZ250F production cycle. It covers the YZ250F(D) variant alongside the broader 17D-series competition machines built to global market specs. Across 198 pages, the manual maps out maintenance, inspection, and system-level overhaul parameters. Mechanics will find 47 exploded-view mechanical diagrams, full wiring diagrams, comprehensive cable routing diagrams, detailed lubrication diagrams, structured job instruction charts, pad selection tables, and 35 torque-specification charts tailored for professional shop environments. Ensure you always cross-reference exact factory data before beginning heavy mechanical work; this page outlines the book's contents rather than providing the step-by-step repair instructions required for safe machine operation.

Having these exact factory measurements directly at the workbench accelerates flat-rate turnaround times during complex engine teardowns, preventing improperly routed harnesses or misaligned balancer shafts. The text details specific step-by-step procedures that traditionally require an expensive dealership visit, allowing independent shops and DIYers to confidently execute complete front fork damper rebuilds, intricate valve clearance adjustments, and hydraulic brake system bleeding:

• Overhauling the constant-mesh transmission, splitting the crankcase, tuning the Keihin FCR-MX39 carburetor, and setting the throttle position sensor (TPS) output voltage.
• Executing diagnostic checks on the CDI magneto, tracking electrical faults through structured troubleshooting workflows, inspecting the dry sump lubrication system, and rebuilding the centrifugal water pump.

Document Content Walkthrough

The literature breaks down vital service data into seven distinct chapters. General information covers model identification, essential warning labels, and consumer data. Routine maintenance sections dive deep. They detail pre-operation inspections, exact oil change intervals, air filter care, and cooling system management. Engine chapters lay out the internal architecture of the cylinder head, valve train, carburetor, and crankcase. On the handling side, chassis sections guide the upkeep of wheels, brakes, suspension, and steering assemblies. The electrical portion delivers full schematics and ignition timing references. Finally, a dedicated tuning chapter targets engine and chassis optimization for varying track conditions.

When overhauling the 17D-series power plant, technicians must be highly aware that the cylinder head utilizes titanium intake and exhaust valves with a specialized factory coating. Attempting to lap these valves to their seats will instantly destroy this hardened layer, leading to rapid catastrophic failure and necessitating immediate component replacement. Furthermore, evaluating the oil level requires strict adherence to the warm-up and wait timing procedure, as premature checking frequently results in dangerous crankcase overfilling.

Specification and Reference Data

Technical tables present exact assembly clearances for critical internals. You get precise valve-to-guide measurements and piston-to-cylinder tolerances. Engine oil capacity is strictly documented at 1.20 L, paired with a 6.4 L fuel tank volume. Cylinder head bolts require a specific 38 Nm torque rating. The cylinder head specification table lists intake valve clearance at an exact 0.12–0.17 mm. Coolant system capacity holds at 1.00 L. Magneto pick-up coil resistance measures between 248 and 372 ohms.