Dear Mike: My pickup came new with those expensive spark plugs that never need changing. Of course I needed to change them after the engine started to misfire, at about 120,000 miles. Two of them ...

Locate the spark plug and pull off the spark plug wire to prevent the mower from accidentally starting while you're working.

Spark plugs are not designed to last forever and at some point they’ll reach their life ending due to carbon deposits on the tips or a crack in the ceramic insulation. Replacing them is an easy task ...