Yamaha YZ250(W)/W1 Owner's Service Manual page 24

CHAPTER 6
ELECTRICAL
ELECTRICAL COMPONENTS AND
WIRING DIAGRAM .....................................6-1
IGNITION SYSTEM.....................................6-2
SOLENOID VALVE SYSTEM......................6-7
TPS (THROTTLE POSITION SENSOR)
SYSTEM......................................................6-9
CHAPTER 7
TUNING
ENGINE.......................................................7-1
CHASSIS...................................................7-12