to what extent did you clean and reclean the carb….did you remove the idle chamber cover plug and clean all orifices. these 9.5 9.5 carb must be 100% clean .
mine ildles all day long. did you try to raise the idle speed a bit by turning the side knob because you could be simply to low on the RPM setting of the throttle handle.
do the easy stuff first . there are 2 good videos part 1 & 2 on 9.5 carbs on utube.
(1500) 9.5 Hp Johnson Evinrude Outboard Carburetor Rebuild – 1of2 – YouTube
(1500) 9.5 Hp Johnson Evinrude Outboard Carburetor Rebuild – 2of2 – YouTube
Johnson (leeroysramblings.com)
“Quote”
On this carburetor, there is a 1/2″ core plug on the outer part of the carb that is inline with 3 small holes in the carb throat. These holes had to be drilled through the access hole this core plug covers up. However INSIDE and under the core plug is a plastic filler plug #0312909 that is not included. On the one I repaired, it would be impossible to remove this plastic plug without destroying it. Oh yes, this kit also included a old style fuel pump cover gasket and filter screen.
Instead of buying a new core plug (even if it is still available) I have used a icepick, drive it into the plug kind of sideways and pry It out. You can blow anything out of that cavity with compressed air and replace the plug by lightly peening the hole shut, reshape and replace it with the hole not totally filled with the metal, Then use a drop of JB Weld to reseal the hole/plug.
There could be many things to cause a poor or no idle situation, the high and low speed jets for this model must be absolutely clean. Good enough won’t cut it on this carburetor, it has to be SUPER CLEAN, and not just spraying it with carb cleaner.
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