2008 Yamaha YZ250FX Owner's Service Manual

This manual covers the 2008 Yamaha YZ250FX, detailing engine, chassis, and electrical systems for comprehensive maintenance and repair. Part ref: 5XC-L0

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Document Details

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Document Number / Seller:
29635 / Douglas Cook
File Size:
7.59 MB
File Type:
PDF
Language:
English
Pages:
186
Printable:
Yes
Category:
Bike
Last updated / verified
Jan 23, 2025

Models Covered & Key Technical Specifications

2008 Yamaha YZ250FX Owner's Service Manual: Precision Maintenance, Troubleshooting & Tuning Maintenance-Registry For YZ250FX (2008): Diagnostics, service, and parts... | Series Module. Maximum Specification Data: 92.7 kg is the dry weight without oil and fuel Measurement. Authorized Engine Type: Liquid cooled 4-stroke, DOHC signifies the primary engine Architecture. Fundamental Output Performance: 249 cm3 is the displacement, defining the engine's cubic capacity Framework. Specific Carburetor Setup: FCR-MX37 is the type of carburetor used for optimal operation Parameters. Critical Tire Pressure: 100 kPa is the standard tire pressure for front and rear Tires. Rated Ignition System: CDI magneto is the ignition system that provides consistent timing Standards.

Professional Workshop Service Manual & Technical Specifications

OEM-Grade Field Manual: Bike Yamaha YZ250FX Owner's Service Manual (2008) - Precision Maintenance, Troubleshooting & Tuning Maintenance-Registry

Model-Portfolio: YZ250FX (2008) // Model-Designation: Bike / Engine Logic // Equipment-Series: 2008 Bike Components. Rigorously mandating the inclusion of detailed procedures, this manual serves as a vital resource for technicians and owners alike. Coverage is segmented into comprehensive chapters.

Technical Specifications Overview

Identifier Technical-Path Context
Engine Type Liquid cooled 4-stroke, DOHC Performance Architecture
Displacement 249 cm3 Engine Displacement
Dry Weight 92.7 kg (204 lb) Machine Weight Analysis
Front Fork Travel 300 mm (11.8 in) Suspension Travel Data
Rear Suspension Link type monocross suspension Suspension System Design
Ignition System CDI magneto Electrical System Component

Coverage is segmented into:

  • Engine: Detailing specifications, regular inspection, adjustments, and comprehensive engine procedures including carburetor, crankcase, and piston.
  • Chassis: Covering front fork, rear shock absorber, swingarm, steering, and wheels, with specific adjustments and maintenance intervals.
  • Electrical System: Explaining components, wiring diagrams, and ignition system checks.
  • Tuning: Providing carburetor settings and adjustments based on atmospheric conditions and engine symptoms.

This manual documents torque specifications for engine components to ensure proper dynamic load distribution. This manual provides precise maintenance and repair guidance for all systems.

FAQ

What **documented** safety precautions are included for operating this Yamaha model? keyboard_arrow_down

115 N·m is the torque specification for the front fork top end bolt, ensuring secure assembly. Additionally, the manual provides guidance on handling gasoline safely and stresses the importance of wearing protective apparel.

Confirm the **precise** lubrication requirements for critical components. keyboard_arrow_down

Lithium soap base grease is specified for various components including the oil seal lip and bearing surfaces, ensuring smooth operation and longevity. Refer to section 3-22 for detailed application points.

What **proper** testing parameters are outlined for the ignition system? keyboard_arrow_down

The manual specifies using a dynamic spark tester or pocket tester for ignition system diagnostics. It details resistance checks for the primary coil (0.08–0.10 Ω), secondary coil (4.6–6.8 kΩ), and charging coil 1 (720–1,080 Ω).

Identify the **standard** diagnostic procedures for the throttle position sensor. keyboard_arrow_down

Pages 6-6 and 6-7 outline diagnostic procedures for the throttle position sensor, including resistance checks of the sensor coil (4–6 kΩ at 20°C) and output voltage measurements (0.58–0.78 V).

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This guide has everything I need for my YZ bike. The support team was very responsive when I had a question. Overall, a fantastic purchase!
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The manual is incredibly detailed and easy to follow. The download process was smooth, and I received the link in my email right away. Highly recommend!