Yamaha E40J - Electrical Systems; Checking Electrical Components; Ignition and Ignition Control System Service; Starting System Checks

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ELEC
Electrical systems
Special service tools ................................................................................... 8-1
Checking the electrical components ........................................................ 8-2
Measuring the peak voltage .................................................................... 8-2
Measuring low resistance ........................................................................ 8-2
Electrical components ................................................................................. 8-3
Top view ................................................................................................... 8-3
Port view .................................................................................................. 8-4
Starboard view (MH) ............................................................................... 8-5
Starboard view (WH, W) .......................................................................... 8-6
Wiring diagram (MH) ............................................................................... 8-7
Wiring diagram (WH) ............................................................................... 8-8
Wiring diagram (W) ................................................................................. 8-9
Ignition and ignition control system ........................................................ 8-10
Checking the ignition spark gap ............................................................ 8-10
Checking the ignition coil ....................................................................... 8-10
Checking the spark plug caps ............................................................... 8-10
Checking the CDI unit ............................................................................ 8-11
Checking the pulser coils ....................................................................... 8-11
Checking the charge coil ....................................................................... 8-11
Checking the thermoswitch ................................................................... 8-12
Checking the engine stop lanyard switch (MH, WH) ............................. 8-12
Starting system .......................................................................................... 8-12
Checking the fuse (WH,W) .................................................................... 8-12
Checking the starter relay (WH, W) ...................................................... 8-12
Checking the engine start switch (WH) ................................................. 8-13
Checking the neutral switch (WH, W: if equipped) ................................ 8-13
Checking the choke solenoid (W) ......................................................... 8-13
Starter motor (WH, W) ............................................................................... 8-14
Removing the starter motor pinion ........................................................ 8-15
Checking the starter motor pinion ......................................................... 8-15
Checking the armature .......................................................................... 8-15
Checking the brushes ............................................................................ 8-16
Checking the starter motor operation .................................................... 8-16
Charging system ........................................................................................ 8-16
Checking the rectifier (WH, W) .............................................................. 8-16
Checking the lighting coil ....................................................................... 8-17