1986-1988 Honda TRX 200SX Fourtrax Service Manual, Page 180Get this manual
IGNITION SYSTEM
PULSE GENERATOR
It is not necessary to remove the pu lse generator to make this test
Remove the rear fender (page 14-2) and junction box cover, and disconnect the pulse generator wire connectorMeasure the resistance between the Blue Yeliow and Green wire erminals
RESISTANCE357393
IGNITION TIMING