1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 201Get this manual
15ELECTRICAL SYSTEM SERVICE INFORMATION TROUBLESHOOTING IGNITION SYSTEM INSPECTION IGNITION COIL EXCITER COIL PULSE GENERATOR
IGNITION TIMING
15-1 15-2 15-3 15-4 15-4 15-4 15-5
AC REGULATOR LIGHTING COIL HEADLIGHT TAILLIGHT IGN ITION SWITCH (After '86:) SWITCHES WIRING DIAGRAM
15-5 15-6 15-6 15-8 15-8 15-9 15-10
GENERAL Ignition timing does not need to be adjusted since the COl (Capacitive Discharge Ignition) unit is factory pre-seta For spark plug inspection, refer to section For pulse generator, exciter coil and lighting coil removal, refer to section All plastic connectors have locking tabs that must be released before disconnecting, and must be aligned when reconnectinga The following color codes used are indicated throughout this sectionBI: Black Bu: Blue W: White G: Green Y: Yellow R: Red When inspecting the ignition system, check the system components and lines step-by-step according to the troubleshooting guide on next page