Chrysler 20 and 30 HP Outboard Motors Service Manual OB 3435, Page 67Get this manual
Problem Engine fires on #2 cylinder but does not fire on #1 cylinder (no spark at #1 plug)
Possible Cause
1Defective spark plug
Test Procedure
1Replace spark plug on #1 cylinderIf engine still does not fire on #1 cylinder, proceed to Step #2 2Perform Test #4 (C-D Unit Output to #1 Igniti on Coil Primary Winding )If C-D unit tests good, replace the #1 ignition coilIf C-D unit tests badproceed to Step #33Perform Test #2 (Trigger Coil Output #1 Cy linder) If trigger tests good, replace the C-D unitIf trigger tests bad, replace the trigger housing assembly 4Verify coi failure by con tinu ity testsee previous page