RE: Fuel Pump Plumbing Tutorial
Roy,
The point of the exercise is to make sure all of the crud and burrs that may be inside the pump are removed, and that the pump gears run free.
If the engine was run by the manufacturer or importer with the supplied pump, it's probably going to be just fine.
If you still consider it to be necessary, here's a way to do it.
Just get a mason jar and fill it half to three qyarters full with mixed fuel (Containg turbine oil or your favorite lubricant).
Attach a line to the intake side of the pump that is long enough to reach the half way point in the fuel level.
Attach a 4mm line to the pump output.
Install a filter in this line, and return the open end of the output line into to the jar. Secure the lines because the pump is a strong little bugger...
The pump will suck fuel from the jar, pass it through the filter and return it to the jar, making a continuous loop.
The filter will catch all of the crud that may be inside the pump during manufacturing.
Hook up a battery to the pump circulating the fuel until the pump runs smooth. If it is not smooth at the start of the process, it will smooth out shortly, indicating that the pump gears were contacting the gear cavity bottom and cover plate too tightly. The steel gears mesh will run in, and they will wear the aluminum housing and cover just enough to sllow the pump to run smoothly.