Yamaha F225A Service Manual page 271

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ELEC
Special service tools .....................................................................................8-1
Checking the electrical components............................................................ 8-2
Measuring the peak voltage ...................................................................... 8-2
Measuring the lower resistance.................................................................8-2
Electrical components................................................................................... 8-3
Starboard and rear views ..........................................................................8-3
Port view.................................................................................................... 8-4
Front view ..................................................................................................8-5
Top view .................................................................................................... 8-6
Wiring harness ............................................................................................... 8-7
Ignition and ignition control system .......................................................... 8-10
Checking the ignition spark gap ..............................................................8-11
Checking the ignition coil.........................................................................8-11
Checking the ECM...................................................................................8-12
Checking the pulser coil ..........................................................................8-12
Checking the throttle position sensor ......................................................8-12
Checking the intake air temperature sensor............................................8-13
Checking the engine temperature sensor................................................ 8-13
Checking the thermoswitch ..................................................................... 8-14
Checking the shift cut switch ................................................................... 8-14
Checking the neutral switch..................................................................... 8-14
Checking the main relay ..........................................................................8-15
Fuel control system .....................................................................................8-16
Checking the low-pressure fuel pump and high-pressure fuel pump ...... 8-18
Checking the high-pressure fuel pump relay ...........................................8-18
Starting system ............................................................................................ 8-19
Checking the fuse....................................................................................8-20
Checking the wiring harness (10 pins) ....................................................8-20
Checking the starter relay........................................................................8-20
Starter motor ................................................................................................8-21
Removing the starter motor pinion .......................................................... 8-23
Checking the starter motor pinion............................................................ 8-23
Checking the armature ............................................................................8-23
Checking the brushes.............................................................................. 8-24
Checking the magnet switch.................................................................... 8-24
Checking the starter motor operation ......................................................8-24
Charging system .......................................................................................... 8-25
Checking the stator coil ...........................................................................8-26
Checking the Rectifier Regulator............................................................. 8-26
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