Bombardier SeaDoo 1990 factory shop manual, Page 123Get this manual
ELECTRICAL Sub-section 05 (CDICHARGING SYSTEMS)
Section 07
dl If the test results are over or lower than the limit, see 'Analysis of test"
d Connect the grounding wire to the CDI checker and to bare surface of the engine
NOTE :Test should be repeated two or three timesIf reading does not repeat, output is erratic and cduse should be investigated (Loose connection of competc.1
Spark Test
a1 Before performing this test, ensure that theignition module and its diode have been checked
NOTE :Ensure that brown ground wire has been
connected
bl Disconnect the checker test wire harness from the gnition module output side