Everytime my self winding runs down, why do I spend hours trying to get started again?
An automatic watch receives it power from the mainspring, which is wound by hand (most watches) and from movement of the arm which causes the Oscillating Weight to spin around and wind the mainspring. The problem is that it takes many, many rotations of the weight to put enough winds on the mainspring to keep it going. If you have not worn the watch for 24 hours you need to put initial winds on the mainspring, either by turning the crown or by swinging the watch around 30-40 times. If the watch is in good mechanical condition, once you put the initial winds on it, you can put it on your wrist and it should run overnight if taken off. Most older Seiko watches cannot be wound by hand.
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