Prime Demon 1900 Carburetor

I would never do that or even recommend that procedure. The correct way to prime ANY engine is to pull the distributor and turn the pump with a drill. Or even by hand with a speed wrench.

On some of the newer engines you can’t drive the pump externally so you use a pressurized tank, find an oil port and put pressurized oil to the engine like that.

Killing a cam lobe from cranking an engine isn’t about rubbing the lube off. Setting the lash does most of that anyway.

It’s the ghastly slow turning of the lifters that kills the lobes. Especially if you are using a lobe that wasn’t designed in 1970 or springs that could be used on a very mild lobe.

That’s just bad policy.
Guess BPE does not know what they are doing then! They only have the best warranty in the industry.