How to clean a lawn mower air filter

How to Clean or Replace A Riding Lawn Mower Air Filter | Troy-Bilt

Lawnmower air filter cleaning

The presence of properly functioning air filter is the first line of defense lawnmower from dirt and debris that rise during the mowing process. When the air filter is in good condition and working properly, it prevents dirt from entering the engine through the carburetor. But if the air filter is worn, dirt and other debris can get into the engine, which can lead to starting problems and shorten the life of the engine.

Cleaning or replacing the air filter is a simple lawnmower service that will improve performance and extend the life of your lawnmower. Clean the foam pre-cleaner every 25 hours of operation. Replace the paper air filter once a season or after 300 hours of operation. Dusty conditions may require more frequent cleaning and replacement.

Look for an air filter that fits your lawnmower model, and always check your owner’s manual to see what’s recommended. There are three types of air filters on the market: a foam filter that requires grease to cover the foam; a paper filter folded into a plastic case; and a hybrid or two-element filter that includes both a foam element (called a pre-filter or pre-cleaner) and a paper element as the main filter.

  • Equipment/tools
  • Protective gloves
  • Wash basin, sink or garden hose
  • Clean dry rags, cloths or paper towels
  • Replacement filter (if necessary)
  • 1-2 teaspoons of engine oil for the foam filter
  • Liquid detergent for dishes
  • Instructions

Turn off the lawnmower

Stop the mower engine. Wait until all moving parts have completely stopped and cooled down before you start working.

Do not operate the lawn mower without the air filter, as serious engine damage may result.

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Disconnect the spark plug

Disconnect the spark plug wire before removing the air filter cover.

Remove the air filter cover

Remove the screws or remove the clips that secure the lawn mower guard (shroud) to the air filter.

The lawnmower’s air filter is usually located on top of the engine and enclosed in a metal or plastic shroud that is usually secured with a screw or snap-in fittings.

Remove the air filter

Remove the air filter and inspect it.

For the paper filter, tap it gently on a flat surface to remove all the dirt. Inspect the filter and expose it to a bright light source. If the paper filter element is blocking a significant amount of light, it’s time to replace it, but don’t try to clean it further. Simply replace it with a new one.

If you have a foam air filter, look for signs of deterioration or obvious brown or yellow staining, which indicates it’s time to replace it. If it is still in good condition, you can proceed to clean it.

If you have a hybrid air filter, follow the manufacturer’s instructions for cleaning or replacing it. The Hybrid has a foam pre-cleaner that needs to be checked. If the foam pre-cleaner has become stiff, brittle or heavily contaminated, it usually needs to be replaced.

Clean the foam filter

Rinse the foam filter in a sink, trash can, or garden hose to thoroughly clean off the dirt. Use dishwashing detergent to remove grease and help remove dirt. Rinse out the soap foam thoroughly and squeeze out the excess water with paper towels, a cloth or your hands.

Dry the foam filter

Before oiling the foam filter, dry it thoroughly. First squeeze the foam out with paper towels or dry cloths. Then place the foam in the sun for about an hour to further dry.

Lubricate the foam filter

After the foam has dried, oil it. Apply the oil to your hands or directly to the foam and massage it through the filter so it spreads well. Don’t add extra oil because you don’t want it dripping into the lawnmower.

An alternative way to add oil is to place the foam in a plastic bag or pouch, add oil, and massage the bag to soak the foam in oil. Wipe off excess oil with a clean paper towel.

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Clean air cleaner fitting

Clean the air filter housing with a dry cloth before reinstalling the air filter. Do not use solvents, as they can damage the air filter element. And do not use compressed air, which can trap debris in the throat of the lawnmower’s carburetor.

Install the air filter

Insert the air filter into the fitting. Make sure that it fits well and has no gaps.

Replace the shroud

Reattach the filter guard, taking care not to pinch or otherwise damage the air filter element.

Never force the cover into place. If it does not assemble easily, you may not have inserted the new filter element correctly.

Attach the spark plug

Don’t forget to reconnect the spark plug wire so you can start the mower.

Blade care

As the main working element of any lawnmower is its blade, the work of the equipment depends greatly on its good condition and sharpness. Generally, a lawn mower will cut grass even with a blunt blade, but it will affect performance and results. That is why manufacturers’ recommendations regarding blade replacement and sharpening should not be ignored. Working with blunt, faulty, out of balance blade the user acts at his own risk, because in case of malfunction he will not be able to use the warranty service. This is why the cutting element should be looked after on a regular basis: cleaned, sharpened and replaced in good time.

During mowing, grass particles contaminate the blade and deck surface. After each mowing it is therefore necessary to carefully clean the surface of the blade of grass. In the case of drying out residual greenery can impede the proper functioning of the blade. All deck cleaning procedures should be performed with the engine stopped. Do not use strong substances for cleaning, such as gasoline and solvents. Particular attention must be paid to cleaning the air vents. After the lawnmower is shiny clean, you can apply an anti-corrosion spray to the deck and blade.

Protect both electric and battery lawnmowers from moisture inside the housing.

Tip: To clean machines with an electric motor, it is best to use a rag, mild soap and a damp cloth.

Some lawnmowers are equipped with a system of simplified flushing of the deck, this allows you to simply connect a hose to the body and clean all the insides of the machine from the grass.

How to adjust the lawnmower (carburetor)

Correct adjustment is essential for successful future operation of the machine.

Newcomers sometimes do not know how important this process is for gasoline mowers and gasoline trimmers, and miss it or simply do not know how to adjust the carburetor of lawnmowers, believing that the factory settings are quite enough. However, this is not the case. Inspection of all mechanisms and adjustment of the carburetor should be carried out regularly.

Important information and tips on tuning the gasoline carburetor in gasoline mowers:

  • The carburetor has 3 screws: left (H), bottom (T) and right (L). To get to the screws, you need to know how to disassemble the lawnmower, and more specifically, how to get to the carburetor. This information should be specified in the product data sheet.
  • The lower screw (T) is responsible for idling, the right screw (L) for the amount of fuel entering the combustion chamber at low RPM, and the left screw (H) is responsible for fuel entering at high RPM.
  • Turn on the carburetor at idle speed. Correctly tuned, it works evenly when the engine is hot and cold, at low and high revolutions. If something goes wrong, you need to turn the lower screw (T).
  • Adjustment of the fuel intake at low speeds is adjusted by turning the right screw (L) a quarter turn counterclockwise.
  • Adjusting the carburetor at high rpm is as follows: open the throttle and press maximum throttle. Turn the left screw (H) clockwise until the rpm drops. Then turn the screw counterclockwise until the engine is uneven. Then slowly turn the screw back clockwise until you hear the engine running smoothly and evenly.
  • The spark plug also serves as an indicator of proper carburetor adjustment. If there is a malfunction, the spark plug is soiled, but if it is adjusted correctly, the working part of the plug remains clean.

This is the most universal algorithm on how to adjust the carburetor on a chainsaw. Individual adjustment depends on the model configuration of your machine.

How to Clean

Do not operate the mower without an air filter or pre-cleaner, as it can cause serious engine damage.

Do not attempt to clean the paper filter. Replace with a new one.

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How to wash the air filter on the Izhmash Industrial Line GT 4350 chain saw

Its location may vary depending on the model of grass trimmer, but it is usually located on the side of the device under the protective cover.

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The cover is fixed by another bolt, as they call it latches, which are not difficult to open in order to remove the contents. You will like the filter itself is made of foam rubber, felt, or fleece.

If you mow roughly a few times during the week, it will be enough to create the change at least once a year. With more extensive use, check and change more frequently.

At some point it will be necessary to wash the air filter of Husqvarna grass trimmer, as it is also called other manufacturer. There are no complications and it is possible to remove the dirt without help of others a couple of hours before mowing.

  • Unscrew the bolt on the protective cover or release the latches.
  • Remove the filter and inspect. To remove the accumulated oil and other impurities our customer will need gasoline.
  • We pour petrol from the canister on the dirty filter and wash off the remaining oil. Wring out and leave to dry for at least 4 hours.5 hours.
  • Wipe the place of the installation with a cloth soaked in gasoline.
  • Install what remains for our customer to do in the area and cover.

Instead of gasoline used soapy water, but it removes dirt still not so great.

As a candidate for washing can be recommended blowing or just shaking out the debris. These cleaning options are appropriate, as long as there is no oil contamination.

If the grass trimmer began to stall at high speeds, most likely the fuel filter is so dirty that it needs to be changed urgently.

Never store gasoline in a plastic water container. Static charge builds up while mixing the fuel mixture, you can “catch” a spark.

That’s why filling stations don’t allow filling plastic canisters with gasoline, only metal ones. Before pouring gasoline into a metal canister, it is better to put it on the ground, so it removes static from the body.

how to clean lawn tractor air filter

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But there are situations when simple manipulations with the brushcutter do not help. The engine still does not start. In this case, it goes to check the power system and ignition, following the rule “the engine doesn’t work if there is nothing to burn or nothing to set on fire”.

How to clean the air filter correctly?

Having dissolved dish detergent or washing powder in water, it is necessary to put there the air filter for 30-40 minutes. After such a procedure, it should be well washed. Regardless of what remedy will be chosen, it is recommended to let the washed paper dry naturally.

The filter must never be blown out with compressed air (Fig. 1 и 2). Otherwise microscopically small dirt particles will be pressed deeper into the filter paper structure, and its permeability will be reduced.

How often should the air filter be cleaned??

Once you have cleaned the air filter, make sure it is intact so you don’t put a damaged part back in. You can use this method of cleaning every day, but it’s best to use it only once a week.

The air filter serves as protection against such mishaps. It also acts as a noise suppressor and, in gasoline engines, also as a mixture temperature regulator. As the filter gets clogged, its resistance to airflow increases, and so does the amount of airflow to the engine.

Diagnosing the cutting part

The mower blade is the element that ensures an even, quality cut of the grass. It requires the same regular and timely care as the filter, the housing, the motor. Next, we’ll look at how to service the cutterbar.

Removing and replacing the blade on the lawnmower

Let’s see how to disassemble rotary knives. This type is used in most mower models, so the instructions will fit many users. In order to remove the cutter bar you will need an adjustable wrench.

  • Turn the mower with the blade upside down to make it easier to service.
  • Clean off any crop residue from the blade. Use a brush or dry cloth for this.
  • The cutting element is attached to the shaft with a standard bolt. Unscrew it with a wrench.
  • Take out the blade with the same diameter as its predecessor. Insert it in the same position as the previous blade. Screw in the locking bolt.
  • Check if you have mounted the blade correctly. Make sure the mower is unplugged. Afterwards start turning the blade by hand. Note that it must be at an equal distance from the drive shaft. make sure that there are no misalignments or irregularities.
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If the mower has been in use for a long time, the bolt may have stuck. In this case there will be problems with its unscrewing. To handle this, use an ordinary hammer. Slightly tap the bolt securing the blade several times with it. Another way is to apply a small amount of brake fluid to the fastener.

Some gardeners deal with mowers that use rotary cutting bases with two attachments. With these devices, the principle of disassembly and replacement is carried out in the same way.

Sharpening blades at home

If you notice that the grass on the homestead is cut unevenly or is pulled out of the ground with the root, this indicates that the knife is blunt. Of course, you can remove it (the algorithm described above) and give it to a sharpening dealer, but with the proper level of skill and the availability of a number of tools, you can sharpen the blade yourself at home.

There are several ways to sharpen a mower blade. You can use one of these tools to do this:

clean, lawn, mower, filter

There is a chance that the knife may have bent as a result of heavy use. Bends can be corrected with a hammer: put the cutting tool on an anvil and strike it in the appropriate areas.

When the right tool for sharpening has been found and the blade is leveled, take care of safety. Wear thick work gloves and safety glasses. The latter is necessary if the sharpening will be carried out with an angle grinder or a machine.

Sharpening machines are equipped with two wheels: the first has a coarse grit, the second has a fine grit. The coarse-grained one is needed for the initial processing. it is used to level the edge of the cutting bed. A fine grit wheel is used to bring the blade to a working condition. Ideally, the sharpening process ends with polishing: you need a felt wheel for this. During machining, it is important to bring the blade to the wheel at the correct angle: this will help maintain the quality of the cut of the vegetation. Recommended sharpening angle is 30 degrees.

If you use a grinder, emery paper or a file for sharpening, place the blade in a vise. If you find heavy damage where the blade touched the vegetation, you can cut it off with an angle grinder. It is important that you do this on both sides. that way you can keep the balance. Finished sharpening, check the balance. If it appears to have been disturbed, remove the excess metal from the heavier side.

Changing the filament in the lawnmower

Some mower models use a spool of fishing line as a cutting base instead of a knife, about the same as in trimmers. Wrap a cord of kapron over the plastic spool. It is taken out through the holes drilled in the body.

Note that trimmer lines come in different sizes. It varies in thickness and shape. The diameter of the cord varies from 1.2 to 4 millimeters. The shape can be round (this section is considered to have the highest strength), shaped (in the form of a star, triangle, t.д.Screwdriver: sharp; twisted: effective on thin vegetation only; sharp: sharp: sharp: sharp: twisted: effective on thin vegetation only.

If the trimmer’s filament head is only damaged in very specific situations, the cord is expendable: it breaks and runs out over time. Knowing how to change a trimmer line is essential for self-service mowers.

  • Unplug the socket by unplugging the mower from the power grid.
  • Using a screwdriver, stop the screwdriver from turning. Having done this, dismantle the spool.
  • Push down on the clamps of the line head. It will help to detach the cover, which is necessary for disassembly of the housing.
  • Select a line for the trimmer whose diameter corresponds to the requirements of your mower (specified in the certificate of the garden equipment). Cut the piece with a length of 2-4 meters.
  • Fold the resulting length into two equal lengths.
  • Push the trimmer line through the hole in the reel.
  • Start twisting the trimmer line in a counterclockwise motion.
  • When you are almost finished and only the small end is left, stick it out. Fix it in the recesses provided to prevent the fishing line from unwinding.
  • Put the cover on the cord head and fix it to the mower.

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