There are two tuning keys, one for square pins and one for flattened pins. In an emergency your let-off regulator will function as a tuning key. Poorly but it will work. Normally broken strings are not a problem but do get the book. Harpsichord wire comes in super miniature sizes. More often the problem will be plectra breaking. A good department will have a pats kit from which you can get what is needed. The players may require a different pitch, like 435 or 415 or something else weird. CAUTION: Many modern instruments have a keyboard that slides left or right to change the pitch of the keys. Make certain you are not pulling the instrument up to 466. Find out from what note they will want an HT tuned. If they want it from C and you tune it from A they will be unhappy. If you need to change the pitch you will have to do it twice, like a piano, and the offset will be the same as a piano. Most harpsichordists can do their own maintenance so let them show you how to replace a string or plectra. Don't get jacks out of sequence. Be careful of the tiny springs in the plectra and don't go trying to regulate one unless and until you know what you are doing. There may be as many a three ranks of strings, or four, maybe two keyboards, or just one. All depends upon it being French, Italian, Flemish or other. Ask to be shown how the stops work and which strings are engaged. Better to be a little dumb than break things too early. Go cautiously, be intelligent and observant and above all ask questions. Lots of luck and my best wishes. Newton
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