Mr. All Thumbs here!

I have decided to replace my 40 bar with a 44 (which is what I have on other bikes) and am attempting to remove/loosen the Sora STI shifters from the bar, with no success.

OK, I have lifted the rubber covering up and have discovered a small silver bolt/screw with a Phillips head, which I have removed - but nothing has loosened.

I have discovered a black slotted apparently screw embedded in the seat side of the shifter which shows through the rubber "hood" area.

SO, what do I need to do.

I knew I should have taken this to my bike shop, but my other road bike is in the shop and I wanted my new bars!

I thought this might be sort of easy. Wrong again.

Not in front of the bike now but if the hood is lifted along the outside a groove in
the side of the metal should show up. On my 105/Ultegra levers, both have the
groove and a 5mm allen wrench slid down the groove will engage an allen head
bolt that loosens the shifter. Look under the outside hood for a groove. The shifter
may stick a little but rotating it back and forth should loosen it and allow removal.
Shimano has PDF versions of the user literature on their web site for reference.
Steve

Thanks

I have been to the Shimano web site looking for what you suggest, but for some reason I get a "technical" error for the technical portion of the web site and it won't load!

Caution: do not entirely loosen that bolt. Putting things together again (while not impossible) is a pain in the neck!

On the outside-facing portion of the shifter, there is a small recess just forward of the beginning of the hood, about halfway up the plastic between the shift lever itself and the hood. Insert your 5 mm allen key into that hole and you'll find a bolt buried back there-you may need to hold the hood back a little to get the key in there well.
Sorry for the vague description but that is the best I can do for now without a picture, and I just don't have time for that at the moment. Hopefully this gets you started.

OK, I raised the rubber up a bit more and have discovered the Allen socket. Will try to do this later.

Thanks to all for their suggestions.

Mr. all thumbs!

SUCCESS

Now all I have to do is remount the computer and rewrap the bars!

Thanks to all.

Now have four thumbs and one finger on each hand. Someday may progress to 2 or 3 fingers! :D