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 can also simply drill into an existing choke carb and transfer the primer nipple to it thereby making it into a primer carb if you want. Leave the choke blade open.