Yamaha F80B Service Manual page 203

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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
Port view.................................................................................................... 8-3
Starboard view........................................................................................... 8-4
Bow view ...................................................................................................8-5
Top view .................................................................................................... 8-6
Ignition and ignition control system ............................................................ 8-7
Checking the ignition spark ....................................................................... 8-7
Checking the spark plug wires...................................................................8-7
Checking the ignition coils ......................................................................... 8-7
Checking the ECM.....................................................................................8-8
Checking the pulser coils...........................................................................8-8
Checking the sensor assembly..................................................................8-8
Checking the cooling water temperature sensor ....................................... 8-9
Checking the oil pressure switch ............................................................... 8-9
Checking the shift position switch.............................................................. 8-9
Checking the main and fuel pump relay (main control) ........................... 8-10
Fuel control system .....................................................................................8-10
Checking the injectors ............................................................................. 8-10
Checking the electric fuel pump ..............................................................8-10
Checking the main and fuel pump relay (fuel control) ............................. 8-11
Starting system ............................................................................................ 8-11
Checking the fuses .................................................................................. 8-11
Checking the starter relay........................................................................8-11
Starter motor ................................................................................................8-13
Disassembling the starter motor..............................................................8-15
Checking the starter motor pinion............................................................ 8-15
Checking the armature ............................................................................8-15
Checking the brushes.............................................................................. 8-16
Checking the magnet switch.................................................................... 8-16
Checking the starter motor operation ......................................................8-16
Charging system .......................................................................................... 8-16
Checking the stator coil ...........................................................................8-16
Checking the Rectifier Regulator............................................................. 8-17
6D93G11
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