No limitations
It may look difficulties at first but i tell you, nothing is impossible unless it is not attempt. When you try something for the first time and upu didn't get it right! That means you have no or little things about it.
In this case, you will have to go back and learn from experts to help you, whatever you tried and it doesn't seem working, just leave it wouldn't further actions until the expert around to check it out.
What i thought its a big problem with my standing fan are just few or nothing, is like its only need oil and cleaning, after dome with their efforts to ensure it back to normal. Without times wasting, i fixed it back and put to work; omoh! I was surprised with the results. Very perfect like i just bought it hehe.