Instructables

Step 2: Remove the handlebars and shopping cart handle

Use the allen key set (probably number 6) to loosen the stem bolts on the bicycle. Use the socket set to remove the shopping cart handle. Ideally the diameter of the cart handle is close to the handlebar center. As you can see i was able to just bolt the handle right in as a replacement. Remove the front wheel. You also can remove the front brake.
what if you have a threaded stem, and can't afford a threadless?