Old tractors had no live pto, so the rear wheels were hooked in as well - as the pto spins down, it keeps driving the wheels, no stopping! Then they had live pto, but no pto brake. So, the pto/ implement just spins down on it's own. Nothing wrong with that, just common sense. Newer tractors got a brake on the pto with independant pto. A person could feather it a bit with the handle. Really nice, if you need the brake for some reason. If not, don't move the lever too fast & let the implement spin down, not wear or break anything. Newest tractors have hyd control of the independant pto; put it on & it is basically instant on; put it off & the brake tries to lock it up tight. This tends to twist a lot of shafts off, break pins, and otherwise mangle parts. As well as wear out the pto brake real fast. One has to be careful to turn the pto on & off at as slow an engine rpm as possible. Some say they have automatic feathering, but.... Not sure which type you have of the last few. --->Paul
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