[bestgenman]

There are many here who know much more than I do about headhunter pumps.  But, I will gladly share what I know about them.

They like to be run frequently and if they sit without operation, they sometimes need a little help getting the rotation going.  There is a removable plug at shaft level which gives access to the shaft.  The starting torque seems low to me and rust must play a part in making it hard to start.  I have never had that happen since frequent running occurs even during the off months.

That also don’t work well if outside water pressure is connected to the coach.  Many stories about excessive water pressure here.  We fill our tank and disconnect the outside hose, running the pump and consuming water from the tank until the next tank fill is required.  It works out perfectly, we know when the black needs emptied when we are about out of water.  That works well unless you dump the gray overboard then, careful watching of the level is required as the pumps do not like to be out of water.  Many stories here about trying to get them primed.

End of Headhunter knowledge !!