Re: 1952 Evinrude Lightwin 3hp (Carb adjustment)

[CHUCK]

quote cesarp35:

when turning the low speed knob there really isn’t any adjustment idle response until i tighten up almost all the way, same with high speed. Any help or suggestions is appreciate it!

Did you by chance remove the welch plug on the top of the carburetor? Removing that not only allows for thorough cleaning….but it also allows a visual inspection of the "fit" of the needle in it’s seat. It is right there.

You can also clean the idle system when the carb halves are taken apart. The idle feed is the small hole in the upper body (The gasket has a matching hole of course…). With the slow-speed needle removed….place a finger over that opening and spray carb cleaner into that hole in the upper-half of the carb….and observe the tiny holes in the carb throat….right behind the throttle plate. You should see the carb cleaner spraying through each of those holes. (This would be with the welch plug in place…)

Another thing I recently learned the hard way is to check to be sure that the needles installed are the correct ones. Sometimes people swap over damaged needles with one that "is almost the same"…..and that causes various issues in running that can have no apparent cause.

Chuck