,,, ok!, let's go on a side trip,, fuel pumps ain't nothing but a couple of check valves?,, fuel pump, you have got to have a good one, no leaks, no worn out parts,, a bad plunger shaft or bad packing will leave you with a fuel leak or low input of fuel to the mixer (carburetor), yes it's one of those parts that should be in good repair and as always "well oiled",, the engines could have had a McCormick Deering or an International nameplate,, brass or aluminum, big tag or small tag,,,, type "m", 1 - 1/2 hp, the year model, old or new style sideplate, or crankcase cutout will be a clue as to that type of fuel pump the engine would have had on it when new,,, leave a comment, subscribe, pass it on, this is #1of2, to be continued,,