I ordered a fuel pump from Ebay...no instructions.
It had three ports.
One you can not blow through. that is hooked up to engine/valve cover
The other two connect to the gas lines.
Hopefully it looks just like the one you are replacing as far as bolt holes.
The ones on the side are the fuel lines the one in the middle on the top is the crankcase line.
Pump is usually marked in & out in tiny words you can barely see under a strong microscope.
You can check by putting some tube on the middle one then blow such blow suck. You can feel one side sucking ans the other side blowing, but it is very gentle so wet your finger to test.
