>>1094118>Adjusting a quill stem requires changing the stem>>1094121>That stem is a quill type so you should ask the bike shop about getting it higher. ???
>>1094120You can easily raise that stem. Just loosen the top bolt a bit. The bolt threads into a piece at the bottom of the stem that wedges into the steerer tube of the frame. Don't loosen too much or the wedge will fall into the steerer. If it's stuck, hit the top of the stem bolt with a mallet to release the wedge. There will be a minimium insertion line, but you'll be able to get a few more cm height.
You should also angle your bars up a bit. It's good for the drops to be between parallel with the ground & pointed at the rear brake.