1996 Johnson Evinrude "ED" 60 LV 90, 115, 150, 150C, 175 Service Manual, P/N 507127, Page 112Get this manual
Power Pack The power pack has several basic functionsIt stores and distributes the voltage received from the charge coil(s)The power pack uses electronic switches, activated by the timing sensor, to select the correct ignition coil primary windingThe power pack has an RPM limiting circuit which helps protect against powerhead damage due to overrevingOverreving can resu It from: Installing the motor too high Carrying less weight than the motor is propped for Using propeller that is too small, has very worn blades, or ventilates excessivelyThe power pack incorporates the 5.L.0Wwarning system, which gradually limits engine speed to approxim ately 2500 RPM if the engine temperature switch closesOnce the 5.L.oWwarning system has activated, the engine must cool to allow the temperature switch to openThe engine must be shut off before normal operation can be resumedThe power pack incorporates Quik5tart TM electroni starting, which automatically advances the ignition timing when he engine temperature is less than 1050 (41 C), and for approximately seconds each time the engine is started, to ensure reliable startsKey Switch W