Restoring an 1996 F3 rebuilding the carburetors and could use some suggestions how to remove the jet which does not have a slot for screwdriver. Does this jet take a special tool? The rebuild kit does have new replacement jets. Thanks for any suggestions you may be able to provide in advance!

 

I don’t think that’s a jet, I think it’s a blanking plug covering a blind passageway.

I could easily be wrong, maybe one of the more experienced members could confirm?

 

Hey there.
That is not a jet. It isn’t removable.

 

Here is a LINK to an old thread you might find useful. It was created by one of the most knowledgeable members, @IDoDirt .

 

Never seen a blank idle screw. Unless you take them out you shouldn’t have to reset the idle.

 

that screw that looks like a circle with a flat edge to it is the mixture screw, turning it in leans out idle mixture, turning it out enrichens idle mixture.
You will need a special tool for that bit, some people claim to have luck turning it using a .22 bullet shell casing but the brass was too soft for me.
Probably worth dremeling a notch in it so you can use a regular screwdriver to turn it in the future

 

Thanks for all the feedback this topic is very confusing. I was able to purchase a service manual (ebay) for CBR F2/F3 1991- 1998. The manual does show the removal process however a "D" to is required. I was able to order a to off Amason a D tool in hopes it is the correct size. I believe the carbs for those years are all the same. This bike has been sitting for a long time and my concern if there is a jet located there and it is clogged like all the other jets that were clogged the bike won't run properly. This too big a job to redo twice.

 

I do need to apologize for my previous incorrect comment. I was on mobile and didn't pay close enough attention to the picture. That is indeed the fuel/air mixture screw.
I have never seen a completely round one. That is truly odd. I don't think the d shaped tool will help, hopefully I am wrong. I can offer 2 suggestions. I've used an empty .22 rifle shell casing before. That might do it. Also, you can take a very fine-toothed hack saw blade and cut a groove in the head of it. Doing this will also cut a groove in your carb body. If you are careful, it will not adversely affect anything. If you do this, you can use a straight slot screwdriver.
When re-inserting the screw, be very careful. When you screw it in, you want the tip of the screw to just seat in the bottom. The instance you feel that, stop. The tip isn't strong. If you over tighten, you can break off the tip of the screw in the carb. When you do that, you are done. I've never been able to extract a broken tip out. At this point, you are looking for a new carb body. It's not hard to get it right, just be aware.

 

Was able to purchase a set of carb tools with two different size "D" tools for only $10 and worked like a charm. Glad I was able to get the polit screws removed and replaced as the old ones were in bad shape. The "O" rings had deteriorated and were very brittle. One of the "O" rings was bound to the polit screw.

 

A good job well done and thanks for the update - every day’s a learning day :-)