As much fun as accordions are, they can be quite intimidating to take apart, clean, or fix. There are very few accordion builders and very few accordion restorers as well- professional or amateur. Most accordions are antiques, which means that most accordions are in some state of disrepair. The most common problem with accordion keyboards is that they are dirty, and contain oxide and/or gunk thats gumming them up. This can be obvious, as when a key stays depressed when pushed, or subtle, like some keys might have a slightly delayed response that can be hard to recognize if you haven't played a recently cleaned accordion. There can be other probems with keys, however, which I try to get at in step #7.
Before we get started, though, I'd just like to disclaim a few things.
For one: All accordions are different. Chances are, your accordion will have a keyboard somewhat like this one's, however because so many companies make accordions and because they can be very technical instruments, there could be some accordions around that make this instructable completely irrelevant
Because of this, fanatical and meticulous caution should be taken. losing a screw could prove very hard to replace, and I like togo to the extreme of putting the same screws back in each same hole every time. Also, don't force your accordion to do something just because it was how mine was put together in the picture. Try to mechanically comprehend the process and look at your accordion from every angle to see if it works the same as mine. I'd love to answer any questions of yours if at all possible.
Enough of me worrying you, though. As important as being careful with your accordion is having fun and doing it for the love of your instrument.Onward, then...