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    1971 50 hp Evinrude - no spark

    Hi, I have a 1971 50 hp evinrude (50173S) that doesn't spark. Don't know much about these stator ignition systems. Is there a way to disable the kill circuit to see if there's an easy fix?
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    Big twin Fuel Delivery?

    Hi, I’m working on several mid-60s 33 hp and 40 hp evinrudes (a few of them are Johnsons). To give myself a break from ignition systems, I’m starting to look at fuel delivery and I have a few questions. All of the 33s and a few of the 40’s have a fuel pump where the fuel enters and exits from...
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    impellor?

    A motor I'm testing is running a little hot - no temp gauge ... just can't keep my hand on it too long after a good run. I took the impellor housing out and to my surprise the impellor is as close to new as a person could want. I did notice however that one of the vanes was curved in the wrong...
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    big twin carb/choke?

    Hi, I’m currently working on some late 60’s evinrude/Johnson 33 hp and 40 hp motors. Most appear to have the same carb system. My question has to do with the choke assembly. It appears to be some sort of combination of manual lever, electric and possibly (I’m not sure about this) hot air input...
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    vacuum switches on Big Twins?

    Hi, I've recently come to own a quantity of mid to late 60s evinrude/Johnson motors (33 & 40 hp). I've started working my way through them ... rebuilding the ignition system, replacing the impellers, adjusting the carbs etc etc. My question has to do with the vacuum switch on the starboard side...
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    Big Twin Flywheel Connecting?

    Hi, I've been working on a few 'big twin' motors lately (mid 60s 33, 40 hp) doing the usual ignition stuff but the problem I'm having is ... as often as not, when I re-assemble everything I have good spark, engine fires right up but then the 'key' between the drive shaft and flywheel shears. Can...
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    1977 20 hp Johnson

    Hi there, I've picked up a 20 hp Johnson and I'd like to fix it up a bit. Unfortunately, when I look at parts online (including iboats) they never seem to have any listings for this year and hp. Can anyone help me with this? I think I heard somewhere that it is the same engine as the 25 hp of...
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