fuel pump on 574

[tractorchiro]

Working around the place yesterday and noticed gas spitting out the bottom/side of the fuel pump. Parked it and looked but nothing looks obviously wrong. Any thoughts? Any tricks to changing the pump out?

 

[Owen Aaland]

The diaphragm is leaking in the pump. There is a hole n the bottom of the pump so that the fuel can leak out rather than go into the engine crankcase. Changing the pump is a matter of removing the two lines and two bolts.

 

[tractorchiro]

Thank you for the info, I'll get one ordered.

 

[Mike Van]

Hardest part of the job is paying for the new pump. ouch.

 

[RBoots]

I replaced the fuel pump on one of our 674's this spring, it didn't have a weephole on it, and was putting gas in the oil. Bought a new one from the local auto parts store, year warranty, made in Mexico unfortunately. Put it on, filled it with gas and checked for leaks while it was running before I had to use it for a bit. Changed the oil after I put the new pump on as well. Used it for about an hour, backed it in the barn across the road, did one last leak check, all was good, so I shut it off. 2 days later I could smell gas when the wind was coming across the road. Went and looked, new pump had leaked/gravity siphoned probably 15-20 gallons of gas out the weephole over the last 2 days all over the barn floor. Off came the new pump, got another one, warranty one, put that one on, has been 4+ months now, no problems. Wish they would have reimbursed me for the gas their new pump drained out on the floor.

Ross