A clogged air filter or fuel filter often results in decreased fuel economy. Changing them  helps ensure peak fuel economy.

An un-tuned mower can cause damage to your mower’s engine slowly over time, especially as the engine is unable to draw enough air to run properly. Eventually, the mower will fail.

Cleaning the undercarriage and the mower deck extends the life of your machine. Grass and debris clumped in the housing can rust the mower deck in the future.

Changing the oil, filters, and spark plugs helps the mower do its job with minimal interference. Dirty filters put extra stress on the mower and burn gas less efficiently.

Keeping the blade sharp puts less stress on the mower's engine, while also ensuring an even look when mowing. Dull blades tear the grass, leading to a messy look.