Fuel squirts out of fuel pump vent

[MarkLeininger]

I have a Toro ZTR with a 25 HP Kawasaki air cooled engine. When I start it, a small amount of fuel sprays/dribbles out the vent hole on the fuel pump. After a few minutes this stops. Do I just change the fuel pump, or could something else be causing this? It runs fine, both cold and warm.
thanks

 

[wushaw]

Change the fuel pump the diaphragm is ruptured.

It will get worse.

 

[MarkLeininger]

Thanks. The throttle cable broke while I was doing the service to put it away for the winter, so I'll pick up the fuel pump too.