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I am going to convert a 1957 10ho Johnson to single hose. In the past, I have simply plugged the air pressure barb that pressurizes the tank and put in a fuel pump. I see that several contributers are getting into the valves on the reed plate and blocking one of them. Is there any advantage over the simpler way?
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That old wives story got started with the 5.5hp motors that had no bypass covers. I guess it’s ok on a 5.5, but seems dumb to me on other models. My opinion.
I tried various methods….Pump over an aluminum plate ran great and simple to install and you save the vacum pulse hose issue … just plug off the barb behind the carb
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Thanks all,
I just finished converting a Johnson 1957 18hp to single line. Simply plugged the pressure barb on the crankcase and installed a fuel pump. Ran it wot and it never skipped a beat. Came into my boatlift and almost ran into it because it would not shut off at minimum throttle. Had to pull the choke to get it to stop. I’m convinced.