It's also possible to simply loop a short piece of hose from one vacuum nipple to the other on the pump and just use the fuel pump function. The hose keeps mud wasps from using the nipples as nesting areas.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!