b-80 with k181s cam not centered in fpump hole?

[redrider55 2]

i have a b80 that the fuel pump lever doesnt touch the cam. seems the cam is shifted away from the pto side.  ive tried a new fuel pump, just wonering if there is anything to look for before tearing down. it does run on gravity fed but not real smooth.  should the lobe for the fuel pump be centered exactly in the fuel pump opening?

[pfrederi 18,180]

small block Kohlers K181 fuel pumps have an offset in the pump arm.  if you are trying to use a big block pump it will not work

Edited May 8, 2022 by pfrederi

[pfrederi 18,180]

K181 pump on the left big block (10hp and up) right

 

 

Welcome

 

[Pullstart 63,538]

to another Michigander!  
 

There are some fuel pumps that are vacuum operated too.  If the diaphragm is good, they work quite well too.

[redrider55 2]

14 minutes ago, pfrederi said:

small block Kohlers K181 fuel pumps have an offset in the pump arm.  if you are trying to use a big block pump it will not work

thanks for the info this has to be it!

[redrider55 2]

9 minutes ago, Pullstart said:

to another Michigander!  
 

There are some fuel pumps that are vacuum operated too.  If the diaphragm is good, they work quite well too.

i did see that too, i rescued this thing from the scrap crusher and it didnt have a pump on it. it had an old one laying on it that was the strait style so i ordered another of those not knowing.  thank a lot for the great inflo