1990 Johnson Evinrude "ES" 40 thru 55, P/N 507872, Page 120Get this manual

1990 Johnson Evinrude "ES" 40 thru 55, P/N 507872, Page 120

Functional TestsS.L.OWTM This ignition system incorporates the S.L.OWTM warning system which will limit engine speed to approximately 2000 RPM when engine temperature exceeds 2030 (950 C)To resume normal operation after the S.L.O.wTM warning system has been activated, the engine must cool to 1620 (72 C) and the engine must be slowed to an idleThe S.L.OWTM warning system depends on input from the temperature switch tan leadOn remote electric start models, the S.L.oWTM warning 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 RPM
3Attach engine harness tan lead to clean engine ground If engine slows to approximately 2000 RPM, test temperature switchRefer to Temperature Switch Test, Section