K181s B-80 fuel pump

[bigbore1934 3]

So my fuel pump on my 1975 B-80 is leaking like a siv...I've tightened it as much as I could multiple times to get the mowing season finished, but now it's time to fix as it's leaking worse than ever! Do I fix or replace? It has the original cast aluminum pump. I've seen the plastic replacements online that are fairly cheap. Is there someplace  that sells the diaphragm so I could fix the existing pump? Which is best? Thanks for any info!

[ebinmaine 72,702]

There's a place in Massachusetts called 

 

Thenandnowautomotive.com

 

That sells rebuild kits for your original aluminum pump for around $30.

 

I've not bought one personally yet but I've never heard a bad word about them.

 

I'd go that way if I needed a pump.

 

 

[Achto 29,404]

 They are the only supplier of Kohler fuel pump kits that I know of.

 

http://www.then-now-auto.com/kohler-fuel-pumps-2/

[WHX?? 51,763]

While your in there consider new filter & fuel lines. The  ethanol in regular gas eats away at the rubber & pump diaphragms  so consider running unlaced gas if available in your area. 

[The Tuul Crib 7,339]

to

 

of that B80!!

[953 nut 60,029]

When a Kohler fuel pump leaks it is very likely that some of the gas has gotten into your engine oil also. be sure to change the oi.

[The Tuul Crib 7,339]

51 minutes ago, 953 nut said:

When a Kohler fuel pump leaks it is very likely that some of the gas has gotten into your engine oil also. be sure to change the oi.

[Tach-a-matic 357]

I got tired of looking for the proper replacement so just bypassed it on my B-80. The tank is high enough that it does not need a pump, except to get maybe that last 1/8 out of it. It ran fine for the couple of hours I used it last week. Gravity is very reliable

 

Edited December 30, 2019 by Tach-a-matic

[ebinmaine 72,702]

13 minutes ago, Tach-a-matic said:

I got tired of looking for the proper replacement so just bypassed it on my B-80. The tank is high enough that it does not need a pump, except to get maybe that last 1/8 out of it. It ran fine for the couple of hours I used it last week. Gravity is very reliable

 

 

 

That's true as long as you are on level ground or pointed nose down a bit.

 

I couldn't get away with that here on the mountainside.

 

[bigbore1934 3]

Thanks guys! I will check that site out as soon as I get the c old one off,as I see I need to know what style it is.

[tntatro 181]

Isavetractors also sells the diaphragm pump with spring for Kohler metal fuel pumps.

 

I'm searching for information on a fuel pump that leaks oil out of the pin. The pin was partially pushed out on one side so I tapped it back but it still leaks. I was thinking about putting JB marine weld over the leaking area unless there is a better fix.