Restoration of 1964 Johnson JH 19A

[Monte NZ]

Hi All
Is there any need to replace the missing metal screen between the air intake and the front of the carburetor on the above?

Thanks in advance
Monte NZ

[Mumbles]

I’ve ran these motors without it and they seemed to run OK but I’ve heard it should be installed for best results. Some refer to it as a spark arrestor while others say it affects the air flow into the carb somehow. Not sure.

[Rusted Junk]

I did a carb rebuild ,tune up and impeller on a Johnson JW 3 HP 1960 motor, the screen was missing. I ran the motor without the screen and it preformed nicely, I had a screen in my collection of parts so decided to try it, I noticed that the motor idled down a little better and the throttle response was a little crisper and smoother as you throttled up. It wasn’t a huge difference but noticeable to me. Those little screens are not cheap, I have seen them for $25 on Evil Bay.

• This reply was modified 2 years, 7 months ago by Rusted Junk.

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