bale away!
As Ken will probably tell you, just prime the fuel line up to the float valve using the bale. The bale will go loose at that point because the line is pressurized. A fuel pressure gauge is helpful here. If the line does not stay pressurized, and gas gets into the flame arrester, the problem is likely dirt in the float valve. Neither kind of pump can overpower a properly working float valve. But I think you will like the mechanical pump. It has better suction, and does not require electricity and an oil pressure safety switch that needs to be bypassed to prime the fuel line. My mechanical pump has worked fine for over 2500 hours. Use MMO in the fuel to keep the rubber parts lubricated. I believe ethanol can degrade the rubber, in the pump and at the float valve tip.
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