1985 OMC 65, 100 and 155 HP Models Commercial Service Manual, PN 507450-D, Page 136Get this manual
Troubleshooting the C.DSystem The magneto capacitor discharge ignition system is easy to troubleshootRemember these tips to obtain fast, accurate test results: 1Visual InspectionCheck wIring for broken, pinched, or loose leadsConnectors should be securely fastened and free from moisture or water accumulation2Test Equipment ConditionBe sure testers are in working orderMany hours can be wasted by replacing working components needlessly3Follow ProcedureTroubleshooting can seem difficult if you vary your technique for each problemMany times items in the system are overlooked because you "thought" you tested themBy following the same procedure each time you trouble shoot, all items in the ignition system are sure to be tested4Test the Complete SystemThere may be occasions when more than one component is defectiveIf this condition is undetected, repeated ignition system failure may occur, or damage to replacement parts could resultTest everything