A lawn mower is a machine utilizing one or more revolving blades to cut a grass surface to an even height. The height of the cut grass may be fixed by the design of the mower, but generally is adjustable by the operator, typically by a single master lever, or by a lever or nut and bolt on each of the machine's wheels. The blades may be powered by muscle, with wheels mechanically connected to the cutting blades so that when the mower is pushed forward, the blades spin, or the machine may have a battery -powered or plug-in electric motor. The most common power source for lawn mowers is a small internal combustion engine, particularly for larger, self-propelled mowers. Smaller mowers often lack any form of propulsion, requiring human power to move over a surface; "walk-behind" mowers are self-propelled, requiring a human only to walk behind and guide them. Larger lawn mowers are usually either self-propelled "walk-behind" types, or more often, are "ride-on" mowers, equipped so the operator can ride on the mower and control it.
An old mechanical lawn mower is shown above.
Tips for Lawn Mower Maintenance :-
A mower that's not properly cared for will have years taken off its life and have a lot more problems in the short run as well. A little fast, simple maintenance during the mowing season and before winter can make a huge difference.
Keeping the blade sharp as well as a well-cared for engine, will keep your mower humming for years to come.
While no lawn is completely maintenance free, even a homeowner without a green thumb can enjoy a beautiful lawn with a few maintenance tips.
- Semi-annual cleanings
A couple of times a year, give the mower a good cleaning. With the gas tank empty, turn the mower on its side. Remove any debris that may be wrapped around the blade or caked up on the underside of the mower deck. Spray the underside of the mower deck hard with a garden hose to loosen dirt and dried-on grass. Scrub with a soft brush and soapy water. Then rinse.
- Brush off the mower
Keep it clean. After each use of the mower, give it a quick brushing off with a gloved hand or rag or whisk broom. After the mower has stopped running completely, reach under the deck with a gloved hand and brush off of caked grass under the deck and on the blade.
- Check the air filter
Clean or replace the air filter once or twice a year. Replace paper filters when they look dirty (keep a few on hand). Plastic foam filters should be removed and washed with warm, soapy water. Air-dry thoroughly. Then work about 2 tablespoons of clean mower oil evenly across the filter to lightly coat it.
- Winterize your mower
After you’ve used the mower for the last time at the end of the growing season, empty the fuel tank by letting the engine run until it is out of gas. Leave the gas tank empty until spring. With the gas tank empty, remove the oil fill cap (if applicable) and turn the mower over to drain the engine oil into a suitable container for recycling. If your mower has an oil drain plug, use that instead of turning the mower on its side. Refill the engine oil reservoir per your mower manufacturer’s recommendations and then replace the oil fill cap.
- Sharpen the blade
Once a year when you change your mower’s oil, replace the spark plug. Disconnect the spark plug wire and then remove the existing spark plug with a wrench or pliers. To ensure you purchase the right replacement plug, write down the code on your existing plug, consult your mower’s owner’s manual or just take the old plug with you when you go to purchase a new one. Screw in a new plug and reconnect the spark plug wire.
- Change the spark plug
Keep the blade sharp. A dull mower blade cuts unevenly and shreds the tip of grass blades, which then turn brown and give a lawn a beige cast that makes it look dry. The ragged ends are also good entry points for disease.