Pulse tube for marathon fuel pump

[gmcman317]

So weird question i have a 93 ezgo marathon with 350cc robins engine. I was replacing all my fuel lines since some were dry rotted and cracked and i was replacing the pulse line that goes between the pump and the crankcase and there's a weird looking filter on the line. It almost looks like a fuel filter but different and has oil in it? Not sure why it was there and i tried looking it up to see if anyone else has something like it and found nothing? Just curious if anyone else has this or if its something someone did before i owned the cart?
THanks

[sccowboy]

Who knows what someone put in there. To my knowledge, there shouldn't be anything placed on that line.

[my1423]

Seen those years ago. Industrial machines and some off road companies add those.
Pump savers. They are just a filter with a foam block full of oil.
The are supposed to keep the diaphragm lubed and prevent back-flow damage making them last longer.
Do not know if they actually do anything or just another gimmick. Some old timers swore by them for chain saws ect.

[gmcman317]

Alright i was thinking the same thing ! I eliminated it when i changed the lines to the pump. I bought the cart from a farmers elevator years ago so it makes sense they probably put it on there. Thanks for the help guys!