It’s usually best to empty the gas tank before you begin.
For additional safety, detach the blade.
Wet the underside of the deck if the grass is difficult to scrape off.
If you are not sure whether the filter can be washed, check the manual.
Water can interfere with the air filter or other mechanisms, especially on the sides or top of the mower. [3] X Research source The underside is usually designed to withstand occasional washing, but check your manual if you are concerned. If you have an air hose, use it again to speed up the drying process.
WD40 or used motor oil have a similar effect, but they can drip off and damage your grass. [4] X Research source
Check product reviews online before buying. Even products marketed for lawn mowers often due a poor job of long-term protection.
A lanolin-based product such as Fluid Film leaves a non-drying coat. Some people swear by it, but others find that grass sticks even more to this coat. Test it on a small patch first. [5] X Research source [6] X Research source Cold galvanization compound is a highly water resistant treatment for unpainted metal surfaces. This might be a good choice in wet climates, but dirt and debris may still wear it down much sooner than the label suggests. [7] X Research source Other heavy-duty rust protection products all have mixed reviews. POR-15 is one of the more popular options.
Grass may have more internal moisture for a day or two after a rain, even if it feels dry.
Inspect mowers used for small home lawns (once or twice a week) at least once a month. Mowers that experience heavy use (several days a week) should be checked once every one or two weeks.
If your lawn mower cuts the grass into small pieces so you do not need to collect the clippings, you have mulching blades. These are low to the ground and most vulnerable to grass buildup, especially on a wet lawn. Low blades are also worse for the grass, since they scalp the dirt and tear grass out by the roots.
