Need Help With Pulse Pump Output

[953 nut 62,592]

28 minutes ago, Walleye Guy said:

how does one know what pressure is required for a particular piece of equipment?

Many gasoline engines have a fuel tank mounted on the engine. The pressure requirement is very low. the 1.5 PSI pump will be your best choice. The Facet Posi-Flo is the pump of choice for many people. The CarBole electronic fuel pump is another popular option.

In either case it is best to mount the pump below the level of the fuel tank, obtain electrical power from a source that will turn off with the ignition key and be sure to provide a fused source of power. On tractors that are equipped with an hour meter that is a good place to connect the electrical line since it already a fuse protected device. If you don't have an hour meter and your engine has battery powered ignition then the wire going to your ignition coil would be a good source but a 5 or 10 amp fuse should be added to the wire feeding the fuel pump.

[953 nut 62,592]

30 minutes ago, SylvanLakeWH said:

appears most are 5/16" - any 1/4"?  Or doesn't matter?           I have slipped 1/4" hose overt the 5/16" fitting with no problem.

 

Where did you mount yours? Pics appreciated.            Lower than the tank, where is up tp you.

 

Finally, separate switch or just at key?          I prefer the key switched power source because I don't have to remember to turn it off but it is a personal thing, your tractor, your choice.

 

[Racinbob 12,294]

The cheapies can be hit or miss. I've used them on non-critical tractors but I'll probably just use up what I have on the shelf and be done with them. I use Mr. Gasket 42S and will stick with them only because it keeps everything common. There are lots of good ones out there. All the pumps I've seen are 5/16" fuel lines. Depending on the install I use 1/4"-5/16" brass fittings or a fuel filter that has stepped in/outs. As far as power I usually just come off the key switch but I have put a separate switch inline (fuse at the pump). Your choice but I wouldn't come off the accessory terminal. It cuts out in the start position. 

I really like this location for the rear tank tractors. 1/4" at the tank valve to a 1/4"-5/16" 90° brass fitting to the pump.