The maintenance required to keep your mower in good condition is easy. With regular maintenance, your mower should provide several years of good service.
Basic maintenance includes changing the spark plug, the air filter, and the oil.
This is equivalent to turning the power off when working on electrical projects. When all other work is completed, replace the old spark plug with a new one. The casing for the filter might be located on the side or the top, depending on the model of lawnmower being serviced. Remove the casing for the filter and dispose of the old filter. Clean any debris from inside the casing with a brush, and install the new filter.