In great shape pressure is probably less than 2 psi.
I am thinking that if it can make the fuel dribble out the hose at the carburetor, it is probably adequate. When in doubt about the pump, gravity feed the carburetor from a test tank and run the output from the pump into a can or bottle and see if the pump keeps up and the amount deilvered doesn't drop back.
I have seen a couple of kohler mechanical pumps in recent years that would pump a while and then take a break. That makes the mechanic pull his hair out though.
Also, How far is the engine and carburetor above the tank? I think I heard they have problems lifting fuel much over about 4 feet. Some guy was saving money by trying to make the engine on his air compressor or welder siphon fuel from the tank in the truck it was mounted on.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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