Alignment Procedure
You are going to want to untwist the plastic knob until the metal part
is loose enough to fold the handlebars down.
You are going to want to use the 6mm Allan
wrench to loosen the middle bolt enough to turn
the handlebars without turning the front wheel.
Make the handlebars and tires are aligned then
carefully fold handlebars down and tight the 6mm
Allen wrench bolt. You can use your feet to hold the
front wheel while doing so.