Do NOT leave this pump out in freezing temperatures. Normally, water is retained in the cylinder within the top half of the pump. When it freezes, the cast iron cracks. Subsequently will will not hold a prime. I learned this the hard way. The easy way out is to remove the top half of the pump and bring it indoors for the winter. Two bolts are all that hold the top half to the bottom.
I bought a second pump just so I could replace the cracked top of the first one. (Until I did that a bicycle inner tube tightly wrapped around the fine crack in the casing worked passably well for a year.)




