Yamaha F50A - Electrical Systems; Troubleshooting; Special Service Tools; Checking the Electrical Components

62Y3A11
ELEC
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Electrical systems
Troubleshooting.............................................................................................8-1
Special service tools .....................................................................................8-2
Checking the electrical components............................................................8-4
Measuring the peak voltage ......................................................................8-4
Measuring the lower resistance.................................................................8-4
Electrical components...................................................................................8-5
Starboard and port views...........................................................................8-5
Front view ..................................................................................................8-6
Top view ....................................................................................................8-7
Tiller handle model (F50/F50A, T50/FT50B) .............................................8-8
Tiller handle model (FT50C)......................................................................8-9
Wiring harness .............................................................................................8-10
Ignition system and Ignition control system.............................................8-11
Checking the ignition spark gap ..............................................................8-13
Checking the spark plug caps .................................................................8-14
Checking the ignition coil.........................................................................8-14
Checking the CDI unit..............................................................................8-15
Checking the charge coil .........................................................................8-15
Checking the pulser coil ..........................................................................8-16
Checking the pulser coil air gap ..............................................................8-16
Checking the engine start switch.............................................................8-17
Checking the engine shut-off switch........................................................8-17
Checking the thermoswitch .....................................................................8-18
Checking the oil pressure switch .............................................................8-18
Starting system ............................................................................................8-19
Checking the fuse....................................................................................8-20
Checking the wiring harness (10 pins) ....................................................8-20
Checking the neutral switch.....................................................................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 starter motor operation ......................................................8-24
Charging system..........................................................................................8-25
Checking the lighting coil.........................................................................8-26
Checking the Rectifier Regulator.............................................................8-26