1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 209Get this manual
IGNITION SYSTEM PERFORMANCE TEST (Except U.S.A,)
Inspect the COl unit with COl testerNOTE
AC ELECTRI SOURCEt:i
Follow the CDI tester manufacturer's instructi ons
) COl TESTER
Inspection adaptor (ell
07508-0012500
Connect the special adapter to the COl unit and COl testerTESTER SWITCH POSITION
CDI UNIT
No spark