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

• Covers the 2013 Yamaha YZ250F(D) competition motocross bike across USA, Canadian, European, Australian, New Zealand, and South African market specifications
• Original OEM publication 17D-28199-33, first edition April 2012
• Contains 198 pages of detailed technical specifications, maintenance intervals, and cable routing diagrams for the complete 17D-series build
• Features an indexed, fully searchable PDF structure to quickly locate essential repair documentation and appendices
• Provides a tangible shop advantage by offering factory baseline settings for suspension damping and carburetor jetting, eliminating guesswork when adapting the bike to specific track conditions
• Outlines comprehensive reference material and step-by-step procedures including Wiring diagrams, FCR-MX39 carburetor tuning, valve clearance adjustments, front fork rebuilds, clutch assembly replacement, CDI magneto inspections, and suspension setting
• Features detailed teardown sequences for water pump servicing, steering head bearings, drive chain alignment, throttle position sensor calibration, brake master cylinder rebuilding, and troubleshooting

Engine and Maintenance Overview

This 2013 Yamaha YZ250F(D) service manual details the inspection and adjustment parameters for the competition-grade 250 cm³ DOHC 4-stroke engine. Key chapters outline the documented disassembly sequences for the carburetor, cylinder head, and camshafts, along with transmission shift mechanism inspections. The maintenance section defines precise service intervals for engine oil changes, cooling system flushes, and valve clearance checks. Proper adherence to these factory specifications is critical to maintain optimal performance and ensure safe vehicle operation during high-stress motocross riding. Working on high-performance motocross components involves inherent hazards, such as handling highly flammable fuels or high-pressure nitrogen gas in the rear shock absorber; always adhere to the documented safety sequences prior to disassembly to prevent severe injury.

Chassis-focused sections document the structural maintenance limits for the swingarm, front telescopic forks, and rear monocross suspension. Detailed cable routing diagrams for the hot starter, throttle cables, and electrical harnesses aid in accurate reassembly after major service tasks. By following the provided step-by-step instructions for tasks like replacing front fork oil seals, performing complete top-end rebuilds, or bleeding the hydraulic brake system, mechanics and DIYers can easily avoid expensive dealership labor costs. The manual includes comprehensive torque tables covering every critical fastener, from the engine mounting brackets to the wheel axles and brake caliper bolts. This allows professional technicians to access complete repair data for structural integrity without relying on guesswork.

Technical Data Preview

You will find exhaustive specification charts for component wear limits, such as piston-to-cylinder clearance and valve seat widths. Reference data highlights the 13 Nm spark plug torque specification and the 1.00 L cooling system capacity. Cylinder head warpage is documented at a strict limit of 0.05 mm, and the intake valve clearance is specified at 0.12–0.17 mm in the cold state. Furthermore, the document provides specific electrical resistance values for the CDI unit and ignition coil to facilitate advanced diagnostic testing in the shop.