Yamaha WR250F Owner's Service Manual

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Contents

ELECTRICAL COMPONENTS.......................................................................9-60CHECKING THE SWITCHES ..................................................................9-64CHECKING THE BULBS AND BULB SOCKETS ....................................9-67CHECKING THE FUSES .........................................................................9-68CHECKING AND CHARGING THE BATTERY........................................9-69CHECKING THE RELAYS .......................................................................9-72CHECKING THE DIODE ..........................................................................9-73CHECKING THE IGNITION SPARK GAP................................................9-73CHECKING THE SPARK PLUG CAP ......................................................9-73CHECKING THE IGNITION COIL ............................................................9-74CHECKING THE CRANKSHAFT POSITION SENSOR...........................9-74CHECKING THE LEAN ANGLE SENSOR...............................................9-75CHECKING THE STARTER MOTOR OPERATION ................................9-75CHECKING THE STATOR COIL .............................................................9-76CHECKING THE RECTIFIER/REGULATOR ...........................................9-76CHECKING THE SPEED SENSOR .........................................................9-77CHECKING THE FUEL SENDER ............................................................9-77CHECKING THE RESISTER ...................................................................9-77CHECKING THE RADIATOR FAN MOTOR ............................................9-78CHECKING THE COOLANT TEMPERATURE SENSOR........................9-78CHECKING THE THROTTLE POSITION SENSOR ................................9-79CHECKING THE THROTTLE POSITION SENSOR INPUT VOLTAGE ..9-79CHECKING THE INTAKE AIR PRESSURE SENSOR ............................9-80CHECKING THE INTAKE AIR TEMPERATURE SENSOR .....................9-80CHECKING THE FUEL INJECTOR .........................................................9-81