Cattle-driven irrigation pump.
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Previously:
https://www.homemadetools.net/forum/...379#post196573
https://www.homemadetools.net/forum/...022#post179906
https://www.homemadetools.net/forum/...917#post190979
https://www.homemadetools.net/forum/...397#post116793
https://www.homemadetools.net/forum/...024#post164583
