8. Safety harness usage: To fasten the safety harness, insert the male end
into the female one. To unfasten it, press the lock buttons on both sides
of the male end and separate the ends:
9. Folding the main frame In order to fold the main frame, move the locks
on the bottom right and left side of the handle. Then, fold the handle,
as shown in the picture below. Prevent the main frame from unfolding
by locking the side security lock.