Reply To: Evinrude 25hp Big Twin Model 25018 “The Evil One”

[William Jatzek]

If I were you I would get a original paper evinrude parts catalog for a electric start of your model year. I like the original paper catalog as you can easily go back and forth to see how all engine components go together. Sounds like your engine is modified to be electric start. There is more involved in correctly making a motor electric start. The mercury safety switch is specific to the model year engine in big twins you can look up the correct # number and get one from a dealer in vintage OMC parts ( there are several hear you can deal with I deal with Dan Gano in spirit lake Iowa ). Also the carburetors are different Manual and electric start. Electric start carb has bottom that has place where choke solenoid mounts with loop bracket. you can use a 1957 solenoid which is 12 volts. Or the original 6 volt if you use 6 volt battery. Also carb linkage is different on electric start and manual start carb. and check your flywheel # number it’s on flywheel I know the number is different from 1955 to 1956 but they look identical . You need to know if your components are correct or if you have some that are incorrect. A parts catalog will help you figure it out. A lot of engines converted just had a starter and bracket put on and the owner would manually choke it and just hit a solenoid to activate starter and they were happy with that. Now you know.Regards Bill,