1981-1984 Official Honda ATC250R Shop Manual, Page 177Get this manual
r:::iJ HONDA ATC 250R
ELECTRICAL SYSTEM
CDI UNIT REMOVAL
Disconnect the wire couplerRemove the CD unitBLACKYELLOW( IGN) BLACKREO(EXT)
CDI UNIT INSPECTION
Replace the COl unit if the readings are within the limits shown in the tableNOTE The COl unit is fully transistorizedFor accurate testing, it is necessary to use specified electric testerUse of an improper tester may give false readingUse SANWA ELECTRIC TESTER (pIN 7308-0020000) or KOWA LECTR IC GREEN(E) BlUEYELLOW(PC)