changed fuel filter lost power Kohler 27 hp

[cajuncreole]

I just changed the fuel filter on an Exmark 52" 27hp Kohler. When I cranked it up ran smooth. I finished cutting but when I went to some heavier grass it would bog down and stall. It would start right back up, sound good, good rpm, smooth, but when I took it into the heavier grass it bogged down and stalled again.

It did not do this with the other fuel pump. I also changed the fuel filter. Normallyl it would just go through this without even a strain.

Any suggestions????

[cajuncreole]

I forgot to mention that it would start to surge, slow down and surge again before it shut down.

Thanks.

[PLM-1]

I forgot to mention that it would start to surge, slow down and surge again before it shut down.

Thanks.

Sounds like a governor problem. Maybe a tech will chime in.

[Restrorob]

I forgot to mention that it would start to surge, slow down and surge again before it shut down.

Thanks.

Are you sure you got the fuel lines on the new pump correctly, I have found this in the past.

[PFHunter]

Be sure you got the filter installed correctly. Filters usually only are meant to have fuel flow in one direction.