2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 346Get this manual
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 (F50F50A, T50FT50B) 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 COl unit8-15 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