I have a whirlpool natural gas range and two of the igniters for the top burners no longer ignite the gas. I am ordering two new igniters. Are there any complications to installing the igniters? Any special tools?

Follow-up, I successfully installed two igniters. The difficult part involved removing the burner itself. The igniter has a metal flange around the ceramic insulator. This flange fits between the burner and the top of the stove. The screws that held the burner in place were rusted, so I had to drill them out and replace them with through bolts.