Coverage: This repair manual covers Yamaha YZ and WR 4-Stroke Motocross and Off-Road Dirt Bikes including:

• Yamaha WR 4-Stroke Models
  • Yamaha WR250 1998 - 2008
  • Yamaha WR400 1998 - 2008
  • Yamaha WR425 1998 - 2008
  • Yamaha WR450 1998 - 2008
• Yamaha YZ 4-Stroke Models
  • Yamaha YZ250 1998 - 2008
  • Yamaha YZ400 1998 - 2008
  • Yamaha YZ425 1998 - 2008
  • Yamaha YZ450 1998 - 2008

What You Will Learn:

This Haynes manual provides step-by-step instructions, photos & illustrations to guide you through each job.  With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and hundreds of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis

Summary:

--Routine Maintenance
--Tune-up procedures
--Engine, clutch and transmission repair
--Cooling system
--Fuel and exhaust
--Emissions control
--Ignition and electrical systems
--Brakes, wheels and tires
--Steering, suspension and final drive
--Frame and bodywork
--Colored Wiring diagrams

• The new "Super Bike" version includes Model History, Performance Data, Tools, & Workshop History

Contents:

• Introduction
• Chapter 1: Tune-up and routine maintenance
• Chapter 2: Engine, primary drive, clutch and transmission
• Chapter 3: Cooling system
• Chapter 4: Fuel and exhaust systems
• Chapter 5: Ignition system, spark plugs, coils, alternator
• Chapter 6: Frame, suspension and final drive
• Chapter 7: Brakes, rotors, pads, calipers, wheels and tires
• Chapter 8: Electrical system, fuses, battery, lights, blinkers, bulbs
• Wiring diagrams

Models Covered:

• Yamaha WR250 2008
• Yamaha WR250 2007
• Yamaha WR250 2006
• Yamaha WR250 2005
• Yamaha WR250 2004
• Yamaha WR250 2003
• Yamaha WR250 2002
• Yamaha WR250 2001
• Yamaha WR250 2000
• Yamaha WR250 1999
• Yamaha WR250 1998
• Yamaha WR400 2008
• Yamaha WR400 2007
• Yamaha WR400 2006
• Yamaha WR400 2005
• Yamaha WR400 2004
• Yamaha WR400 2003
• Yamaha WR400 2002
• Yamaha WR400 2001
• Yamaha WR400 2000
• Yamaha WR400 1999
• Yamaha WR400 1998
• Yamaha WR425 2008
• Yamaha WR425 2007
• Yamaha WR425 2006
• Yamaha WR425 2005
• Yamaha WR425 2004
• Yamaha WR425 2003
• Yamaha WR425 2002
• Yamaha WR425 2001
• Yamaha WR425 2000
• Yamaha WR425 1999
• Yamaha WR425 1998
• Yamaha WR450 2008
• Yamaha WR450 2007
• Yamaha WR450 2006
• Yamaha WR450 2005
• Yamaha WR450 2004
• Yamaha WR450 2003
• Yamaha WR450 2002
• Yamaha WR450 2001
• Yamaha WR450 2000
• Yamaha WR450 1999
• Yamaha WR450 1998
• Yamaha YZ250 2008
• Yamaha YZ250 2007
• Yamaha YZ250 2006
• Yamaha YZ250 2005
• Yamaha YZ250 2004
• Yamaha YZ250 2003
• Yamaha YZ250 2002
• Yamaha YZ250 2001
• Yamaha YZ250 2000
• Yamaha YZ250 1999
• Yamaha YZ250 1998
• Yamaha YZ400 2008
• Yamaha YZ400 2007
• Yamaha YZ400 2006
• Yamaha YZ400 2005
• Yamaha YZ400 2004
• Yamaha YZ400 2003
• Yamaha YZ400 2002
• Yamaha YZ400 2001
• Yamaha YZ400 2000
• Yamaha YZ400 1999
• Yamaha YZ400 1998
• Yamaha YZ425 2008
• Yamaha YZ425 2007
• Yamaha YZ425 2006
• Yamaha YZ425 2005
• Yamaha YZ425 2004
• Yamaha YZ425 2003
• Yamaha YZ425 2002
• Yamaha YZ425 2001
• Yamaha YZ425 2000
• Yamaha YZ425 1999
• Yamaha YZ425 1998
• Yamaha YZ450 2008
• Yamaha YZ450 2007
• Yamaha YZ450 2006
• Yamaha YZ450 2005
• Yamaha YZ450 2004
• Yamaha YZ450 2003
• Yamaha YZ450 2002
• Yamaha YZ450 2001
• Yamaha YZ450 2000
• Yamaha YZ450 1999
• Yamaha YZ450 1998

Haynes motorcycle repair manuals can save you money on maintenance and repair bills. Step-by-step procedures and illustrations guide you through every job, from maintenance and troubleshooting, to complete teardown and rebuild.