I need to adjust the handle on the top of the hydrant to stop water from coming out after I push the handle down. How do you adjust handle on top?

I need to adjust the handle on the top of the hydrant to stop water from coming out after I push the handle down. How do you adjust handle on top?
We need more details. By "hydrant" do you mean outside hose bib?

I need to adjust the handle on the top of the hydrant to stop water from coming out after I push the handle down. Most handles turn, they don't push and pull. What makes yours different ? Back to you, Tom