Join Date: Aug 2009
Location: Rochester Il
Bikes: 1983 Zullo road bike, 1994 Trek mtb, late 90's Trek road bike, 1977 Schwinn LeTour III, and my latest project, a 70's something "Suncrest" road bike
It appears to be a traditional headset, (not threadless), in which case an allen wrench, (the hex-sided), would remove the current handlebars and probably the same one to remove the stem. There appears to be a cap at the top of the stem. If you remove the cap you should see an allen bolt. If so, you can remove the stem simply by loosening the bolt. If it is threadless, well, I'm pretty old-school, and haven't worked on one yet so I can't really help, but I'm sure someone will come forward to assist!!