1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 114Get this manual
1 Functional TestsS.L.OWTM
This ignition system incorporates the 5.L.DW Mwarning system which will limit engine speed to approximately 2500 RPM when engine temperature exceeds 203 (950 C)To resume normal operation after the 5.L.DW warning system has been activated, the engine must cool to 162 (72 C) and the engine must be stoppedThe 5.L.0W warning system depends on input from the temperature switch tan leadOn electric start models, the 5.L.0Wwarning system is isolated from other warning horn signals by blocking diode in the engine wiring harnessTemperature Switch 1Disconnect temperature switch tan lead2Install correct test propellerStart engine in test tank and run at 3500 RPM3Attach engine harness tan lead to clean engine ground Engine must slow to approximately 2500 RPM4Stop engine If engine speed is reduced in Step 3, test temperature switch Refer toTemperatu re Swit ch Test, Section If engine speed is not reduced in Step 3, continue with this procedure5Separate 5-pin Amphenol connector between stator assembly and power pack