Yamaha F25A Service Manual

E
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ELEC
CHAPTER 8
ELECTRICAL SYSTEM
ELECTRICAL COMPONENTS ......................................................................... 8-1
(Front and rear views) ............................................................................. 8-1
(Port side view) ........................................................................................ 8-2
(Starboard side view) .............................................................................. 8-3
WIRE HARNESS (MH) .................................................................................... 8-4
WIRING DIAGRAM................................................................................... 8-4
WIRE HARNESS (EH) ..................................................................................... 8-5
WIRING DIAGRAM................................................................................... 8-5
WIRE HARNESS (EHT) ................................................................................... 8-6
WIRING DIAGRAM................................................................................... 8-6
WIRE HARNESS (E) ........................................................................................ 8-7
WIRING DIAGRAM................................................................................... 8-7
WIRE HARNESS (ET) ...................................................................................... 8-8
WIRING DIAGRAM................................................................................... 8-8
ELECTRICAL ANALYSIS ................................................................................. 8-9
INSPECTION............................................................................................. 8-9
Digital circuit tester ........................................................................... 8-9
Peak voltage measurement .............................................................. 8-9
Peak voltage adaptor ........................................................................ 8-9
Test harness (for the pulser coil and stator coil) .......................... 8-10
IGNITION SYSTEM ....................................................................................... 8-11
IGNITION SPARK GAP........................................................................... 8-12
IGNITION SYSTEM PEAK VOLTAGE.................................................... 8-13
SPARK PLUG.......................................................................................... 8-14
SPARK PLUG CAP.................................................................................. 8-14
ENGINE STOP SWITCH (MH, EH, EHT)................................................ 8-14
IGNITION CONTROL SYSTEM .................................................................... 8-15
PULSER COIL ......................................................................................... 8-16
OIL PRESSURE SWITCH........................................................................ 8-16
ENGINE TEMPERATURE SENSOR ....................................................... 8-16
LOW-OIL-PRESSURE WARNING LAMP............................................... 8-17

Yamaha F25A Specifications

General

Brand	Yamaha
Model	F25A
Category	Outboard Motor
Language	English