Yamaha YFM7FGPW Service Manual page 13

FUEL INJECTION SYSTEM
FUEL INJECTION SYSTEM............................................................................6-1
CIRCUIT DIAGRAM .................................................................................. 6-3
ECU SELF-DIAGNOSTIC FUNCTION......................................................6-5
SELF-DIAGNOSTIC FUNCTION TABLE .................................................. 6-6
TROUBLESHOOTING CHART .................................................................6-7
DIAGNOSTIC MODE ................................................................................ 6-8
TROUBLESHOOTING DETAILS ............................................................ 6-12
CHECKING THE INTAKE AIR PRESSURE SENSOR ........................... 6-26
CHECKING THE INTAKE AIR TEMPERATURE SENSOR ....................6-26
FUEL TANK................................................................................................... 6-28
REMOVING THE FUEL TANK ................................................................6-30
REMOVING THE FUEL PUMP ...............................................................6-30
CHECKING THE FUEL PUMP BODY.....................................................6-31
CHECKING THE ROLLOVER VALVE ....................................................6-31
INSTALLING THE FUEL PUMP..............................................................6-31
INSTALLING THE FUEL HOSE ..............................................................6-32
THROTTLE BODY......................................................................................... 6-33
REMOVING THE THROTTLE BODY ASSEMBLY .................................6-36
CHECKING THE FUEL INJECTOR ........................................................ 6-36
CHECKING THE THROTTLE BODY ......................................................6-36
INSTALLING THE THROTTLE BODY ASSEMBLY................................6-37
CHECKING THE FUEL PUMP AND PRESSURE REGULATOR
OPERATION .......................................................................................... 6-38
CHECKING AND ADJUSTING THE THROTTLE POSITION
SENSOR ................................................................................................6-39
TROUBLESHOOTING.....................................................................................7-1
CHECKING NOISES ................................................................................. 7-1
TROUBLESHOOTING CHART .................................................................7-3
CHAPTER 6
CHAPTER 7
DRIVE TRAIN