Johnson 20hp primer vs choke

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DIZZYSPOTS

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Anybody out there know when OMC went from chokes to primers? Converting my 20 hp to 30 hp and having a tough time finding a "primer" 30/35 hp carb???
 
omc switched to primers in 1984. you could put a carb with a butterfly choke on a newer motor though.. the choke knob/handle does line up where the manual primer is if its a tiller motor.
 
when looking at the parts breakdowns on line...all the pics of 84 up still show a choke blade in the throat of the carb?/? looking for an 1984-89 OMC 30 or 35 hp carb..primer NO choke....just the right part number would be great ??
 
You could get a choke carb from a pre 84 model and make a Frankenstein carb with parts from both.
 
I may try the drill and transfer trick. Has anyone else done this?
 

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