Introduction Chapter 1: Tune-up and routine maintenance Chapter 2: Engine, clutch and transmission Chapter 3: Cooling system Chapter 4: Fuel and exhaust systems Chapter 5: Ignition systems Chapter 6: Steering, suspension, and final drive Chapter 7: Brakes, wheels and tires Chapter 8: Frame and bodywork Chapter 9: Wiring diagrams Whats covered: Yamaha 2-Stroke Motorcross Bikes Haynes Repair Manual Online for 1986 thru 2006 covering YZ80, YZ85, YZ125 and YZ250 models (excludes WR models)