Widget, What I am was referring as test equipment was not a pump for fuel but instead is a pump setup Similar to the MityVac MV8500 vacuum/pressure pump. It is the same setup that is use to test those small Walbro, Zama, and the like carburetors plus crankcases of many 2 cycles.
Mityvac MV8500 Now there are cheaper plastic versions than this metal one. Also be careful being lead a stray and getting a vacuum only version as you do want to get the combo unit. There are times that you can find a good deal on these but it takes time. Locally they were wanting close 100 usd for mine but I was able to find it online for 52 usd including shipping at the time I purchased my tester.
I did have a minor problem my unit when I got it as line adapters are molded and those area weren't as smooth as needed to seal well but that is an easy fix.