How to Convert A Push Mower to Mulching Mode?

18 minutes read

To convert a push mower to mulching mode, follow these steps:

  1. Safety first: Before starting any maintenance or modifications, ensure that the mower is turned off and the spark plug wire is disconnected to avoid accidental starting.
  2. Remove the cutting blade: Tilt the mower on its side, with the carburetor side facing up. Use a suitable wrench to loosen and remove the blade bolt. Take out the blade and set it aside for later use.
  3. Install the mulching blade adapter: Place the mulching blade adapter over the mower's driveshaft, ensuring it aligns with the mounting holes. Insert the blade bolt through the adapter and tighten it securely with the wrench.
  4. Reinstall the cutting blade: Take the cutting blade you removed earlier and position it over the mulching blade adapter, aligning it with the mounting holes. Insert the blade bolt and securely tighten it with the wrench. Ensure that the blade is properly balanced.
  5. Block the discharge chute: Locate the discharge chute on the mower deck. You can either tape it closed using heavy-duty tape or attach a specially designed mulching plug, if compatible with your particular mower model. Blocking the chute prevents grass clippings from being expelled and encourages the mulching process.
  6. Adjust the cutting height: Most lawn mowers provide adjustable cutting height options. Set the cutting height to a preferable level for mulching. This can usually be done by adjusting the wheels or a single lever that controls the height for all wheels.
  7. Test and adjust: With the modifications completed, reconnect the spark plug wire and start the mower. Slowly move it across your lawn and observe if the clippings are being adequately mulched. Adjust the cutting height or blade as needed to achieve the desired mulching effect.
  8. Maintenance: To maintain your mower's mulching capabilities, periodically check the blade for sharpness and the adapter bolts for tightness. Dull blades or loose bolts may reduce mulching efficiency.


Remember to consult your mower's user manual for specific instructions and any model-specific recommendations on converting to mulching mode. Enjoy the benefits of mulching, such as promoting a healthier lawn by returning nutrients to the soil and reducing waste by avoiding bagging grass clippings.

Best Push Lawn Mowers of 2024

1
YARDMAX 21 in. 170cc 2-in-1 Gas Walk Behind Push Lawn Mower with High Rear Wheels

Rating is 5 out of 5

YARDMAX 21 in. 170cc 2-in-1 Gas Walk Behind Push Lawn Mower with High Rear Wheels

  • Single-lever deck adjustment for quickly setting your mow height
  • MAXFlow Deck Technology – volute spiral deck design for better airflow and mulching
  • Heavy-duty, 16-gauge stamped steel deck
  • Durable, one-piece seamless steel deck reduces vibration
  • Seven cutting heights from 1.25″ to 3.75″
  • Double-ball-bearing wheels for easy, smooth mowing with less pushing effort
  • Adjustable, durable 3-position handle height
  • Folds for space-saving storage
  • 7 in. front and 11 in. rear wheels for stability and control
2
PowerSmart Gas Lawn Mower 21 Inch 2-in-1 with 144CC 4-Stroke Engine, Push Mower Gas Powered DB2321CR

Rating is 4.9 out of 5

PowerSmart Gas Lawn Mower 21 Inch 2-in-1 with 144CC 4-Stroke Engine, Push Mower Gas Powered DB2321CR

  • 144CC OHV ENGINE: reliable engine, recoil starter for easy start, forced air cooling system continuously deliver unbeatable grass cutting effect.
  • 21 INCH CUTTING DECK: patented cutting system with 21 inch cutting deck, wider mowing path helps you trim sizable yard fast.
  • 2-IN-1 PUSH MOWER: side-discharge easily pass thick grasses for quickest mowing, mulching lawn mower minces grass into super-fine bits for recycle.
  • GRASS HEIGHT ADJUSTABLE: 6 positions for adjust cutting height from 1.5" to 3.9", suitable for all kinds of grasses.
3
BILT HARD Gas Lawn Mower 20 inch, 2 in 1 170cc 4-Stroke OHV Engine Cordless Lawnmower, 8 Adjustable Cutting Heights Push Mowers for Lawn, Yard and Garden

Rating is 4.8 out of 5

BILT HARD Gas Lawn Mower 20 inch, 2 in 1 170cc 4-Stroke OHV Engine Cordless Lawnmower, 8 Adjustable Cutting Heights Push Mowers for Lawn, Yard and Garden

  • Auto Choke Engine - 170cc 4-stroke OHV engine, 6.5 ft.lb torque, 20 inch cutting deck.
  • Cutting Height - 8-position single lever four-wheel synchronized height adjustment from 1.2" to 3.2".
  • Mowing Convenience - 7" rear/6“ front double ball-bearing wheels achieve smooth movement, comfortable foam-wrapped angled grip eliminates grasp fatigue.
  • Durable Cutting Deck: 20" cutting deck and specialized blade delivering a clean, even cut. Enjoy years of high efficient mowing with superior cutting quality
4
Greenworks 40V 16" Cordless (Push) Lawn Mower (75+ Compatible Tools), 4.0Ah Battery and Charger Included

Rating is 4.7 out of 5

Greenworks 40V 16" Cordless (Push) Lawn Mower (75+ Compatible Tools), 4.0Ah Battery and Charger Included

  • CORDLESS LAWN MOWER – Get more done, faster, with Greenworks electric lawn mowers. This 40v push lawn mower provides the power you need with up to 45 minutes of runtime on a fully charged 4.0Ah battery. The battery completely charges in 120 minutes.Brushless motor : No
  • LIGHTWEIGHT, EASY TO USE – A lightweight 16” cutting deck allows for easy maneuvering through small to medium yards (up to ½ acre) more efficiently. Easy push button start and lighter weight make it a great choice for your lawn.
  • VERSATILE – Battery powered lawn mower has a single lever 5-position height adjustment with a cutting height range from 1-1/4" to 3-3/8" for the best cut in all environments. The 2-in-1 feature offers versatile use with mulching and rear bagging options.
  • MAINTENANCE FREE – This walk behind lawn mower is virtually maintenance free, with no gas, no oil and no emissions. It starts instantly and is quiet but delivers gas-like power for your toughest projects.
5
Yard Machines 11A-02BT729 20-in Push Lawn Mower with 125cc Briggs & Stratton Gas Powered Engine, Black and Red

Rating is 4.6 out of 5

Yard Machines 11A-02BT729 20-in Push Lawn Mower with 125cc Briggs & Stratton Gas Powered Engine, Black and Red

  • A 125cc OHV Briggs & Stratton engine delivers reliable power to quickly tackle your yard
  • Push mower ideal for small yards with minimal obstacles
  • 20-in. deck with side discharge to efficiantly spread grass clippings
  • 7-in wheels provide reliable traction to navigate your yard
  • Choose from 3 cutting heights
6
BLACK+DECKER Electric Lawn Mower, 10-Amp, Corded (BEMW472BH)

Rating is 4.5 out of 5

BLACK+DECKER Electric Lawn Mower, 10-Amp, Corded (BEMW472BH)

  • Lightweight corded electric mower gasless 10 Amp 15 inch electric mower for powering through rough grass.Ideal for 1/8 acre.Voltage : 120 V. Product Application : Cleaning.
  • Comfort grip bike handlebar design reduces friction and enhances maneuverability for small lawns
  • Enhanced clipping collection winged blade yields 30% better clipping collection
  • Push button start no-hassle startup easy-to- use features
  • Adjustable cutting height 6 adjustable cutting heights ranging from 1 inch to 3 inch
7
CRAFTSMAN Gas Powered Lawn Mower, 21-inch Push Mower, 140cc (M105)

Rating is 4.4 out of 5

CRAFTSMAN Gas Powered Lawn Mower, 21-inch Push Mower, 140cc (M105)

  • POWERFUL ENGINE: 140cc BRIGGS & STRATTON engine with auto-choke
  • MOWING CONVENIENCE: 21 in., 3-in-1 convertible deck lets you side discharge, mulch, or rear bag grass clippings
  • CLIPPING COLLECTION: Rear bag collects grass clippings for easy cleanup or composting
  • HEIGHT ADJUSTMENT: Dual-lever, 6-position height adjustment makes it easy to change cutting heights from 1.25 in. to 3.75 in. high
  • COMFORT: Adjustable loop handle for comfort while mowing. MULCH KIT: Included to help put nutrients back into soil for a healthy lawn
8
BLACK+DECKER 3-in-1 String Trimmer/Edger & Lawn Mower, 6.5-Amp, 12-Inch, Corded (MTE912) (Power cord not included), Black/Red

Rating is 4.3 out of 5

BLACK+DECKER 3-in-1 String Trimmer/Edger & Lawn Mower, 6.5-Amp, 12-Inch, Corded (MTE912) (Power cord not included), Black/Red

  • 3N1 DESIGN – Electric mower easily converts to string trimmer and edger via a built-in foot pedal for versatile use.
  • 6.5 AMP MOTOR – Supplies the ideal amount of power when trimming grass, weeds, and overgrowth.
  • GEAR DRIVE TRANSMISSION – For tackling tougher, thicker grass without getting bogged down.
  • AFS AUTOMATIC FEED SPOOL – Continuously feeds trimmer line without bumping for seamless, uninterrupted trimming.
  • ADJUSTABLE MOWER DECK AND TRIMMER HANDLE – Lawn mower deck and string trimmer handle are adjustable for ideal grass- cutting height and added comfort.
  • CORDED – Corded design offers unlimited runtime for even the biggest jobs.
  • INCLUDES – (1)GH912 trimmer/edger, (1) MTD100 detachable mower deck, (1) AF-100 spool, (1) auxiliary handle, (1) guard.
  • Note: Item requires power cord. Power cord not included


How to maintain the balance of nitrogen-rich grass clippings when mulching with a push mower?

To maintain the balance of nitrogen-rich grass clippings when mulching with a push mower, you can follow these steps:

  1. Mow regularly: Mowing your lawn frequently, ideally once a week, helps to ensure that the grass clippings you collect are shorter and easier to decompose. Shorter clippings break down faster and distribute evenly throughout the lawn.
  2. Adjust the mowing height: Set your push mower to a higher cutting height. Cutting grass too short can lead to excess clippings that are harder to decompose and can create a thick thatch layer.
  3. Use a mulching blade: Make sure your push mower has a mulching blade installed. Mulching blades are designed to cut grass clippings into finer pieces, promoting faster decomposition.
  4. Mulch when the grass is dry: Mow the lawn when the grass is dry to prevent clumping and to ensure even distribution of the clippings.
  5. Avoid excessive mulching: If the grass is too tall and produces a large amount of clippings, consider mowing in multiple passes. This will help prevent a buildup of excessive nitrogen-rich clippings that could suffocate the lawn.
  6. Mix grass clippings with other organic materials: If you find that your grass clippings are too nitrogen-rich, you can mix them with other organic materials such as dry leaves or sawdust. This will help balance the carbon-to-nitrogen ratio and promote the decomposition process.
  7. Monitor moisture levels: Ensure that your lawn receives adequate moisture for proper decomposition. If the lawn becomes too dry, the clippings may take longer to break down.


Following these tips will help you maintain the balance of nitrogen-rich grass clippings when mulching with a push mower, resulting in a healthier and more vibrant lawn.


How to effectively distribute the mulched grass clippings across the lawn with a push mower?

To effectively distribute mulched grass clippings across the lawn with a push mower, follow these steps:

  1. Adjust the mower deck height: Set the mower deck at the highest level to ensure that the grass is not cut too short. Longer grass blades will result in better mulching and easier distribution.
  2. Mow when the grass is dry: Wait until the grass is dry before mowing to prevent clumping of the clippings. Wet grass clippings tend to stick together and can create uneven distribution.
  3. Mow in a steady and consistent pattern: Mow the lawn in a straight line or a pattern that ensures even coverage. Avoid random turns or overlapping areas already mowed to prevent excessive clippings from accumulating in one area.
  4. Keep a moderate mowing speed: Push the mower at a steady pace to allow the blades enough time to mulch the clippings properly. Moving too fast may leave long clippings, while moving too slow can create clumps of grass.
  5. Allow the clippings to disperse naturally: Aim to have the clippings disperse evenly across the lawn by mowing in a way that allows the machine to distribute them naturally. Avoid using a grass catcher or bag attachment, as this will prevent the clippings from being evenly spread.
  6. Use a mulching kit or attachment: If your mower does not have a mulching kit or attachment, consider installing one. These kits typically include a specially designed blade, baffles, and a plug to promote optimal mulching and even distribution of grass clippings.
  7. Clean the mower deck regularly: After mowing, clean the underside of the mower deck to remove any clippings or debris that may impede the distribution of mulched grass. This will prevent blockages and ensure the next mowing session is efficient.


By following these steps, you can effectively distribute mulched grass clippings across your lawn, which will help fertilize the soil and provide nutrients to promote healthy growth.


How to safely store the grass collection bag when using mulching mode on a push mower?

When using mulching mode on a push mower, you don't need to collect and store the grass clippings in a separate bag. However, if you want to switch back to using the collection bag for specific reasons, such as composting the clippings, you can follow these steps to safely store the grass collection bag:

  1. Ensure the mower is completely off and the engine is cool before proceeding.
  2. Disconnect the mower from the power source if it's an electric mower or wait until a gas-powered mower has cooled down.
  3. Empty any remaining grass clippings from the collection bag into a compost bin or bag.
  4. Inspect the bag for any debris, twigs, or dampness. Shake it gently to remove any loose grass or dirt.
  5. If the bag is dirty, you can rinse it with water to clean it, but make sure it's completely dry before storing it to prevent mold or mildew.
  6. Fold the bag neatly or roll it up, ensuring all sides are aligned properly.
  7. Place the bag in a dry, cool, and well-ventilated area, away from direct sunlight or moisture.
  8. If possible, hang the bag on a hook or peg to prevent it from getting flattened or damaged by other objects.
  9. Keep the bag in a safe and secure location, preferably away from any chemicals or sharp objects that could potentially puncture or tear it.
  10. When you need to use the collection bag again, inspect it for any damage or signs of wear and tear before attaching it to the mower.


Remember, when mowing in mulching mode, the grass clippings are finely chopped and distributed back onto the lawn, providing nutrients and acting as natural fertilizer. Therefore, storing the grass collection bag may not be necessary unless you intend to compost the clippings.


How to prevent damage to the mulching blade when using a push mower?

Here are some tips to prevent damage to the mulching blade when using a push mower:

  1. Avoid hitting hard objects: Be mindful of rocks, tree roots, large branches, or other solid objects while mowing. These can cause the blade to chip, bend, or even break. Keep the mower at a moderate speed and stay vigilant to avoid any potential hazards.
  2. Clear the yard of debris: Before mowing, take a few minutes to remove any sticks, branches, toys, or other objects from the yard. Even smaller items can get caught in the blades and cause damage.
  3. Mow at the right height: Adjust the cutting height of your mower according to the recommended guidelines for the type of grass you have. Cutting excessively low can put additional strain on the blade, potentially causing it to become damaged.
  4. Regularly sharpen the blade: A sharp blade is less likely to suffer damage. Check the blade periodically for dullness or nicks, and sharpen it as needed. If the blade is severely damaged, it may need to be replaced altogether.
  5. Avoid mowing wet or damp grass: Wet grass can clump together and create excessive strain on the blade. Mowing when the grass is dry will reduce the chances of damaging the blade.
  6. Watch out for hidden obstacles: Pay attention to your surroundings, especially if you are mowing in an unfamiliar area. Look for any hidden obstacles like rocks, tree stumps, or uneven terrain that might pose a risk to the blade.
  7. Follow the manufacturer's guidelines: Read and follow the instructions provided by the mower manufacturer. They often provide specific guidelines and recommendations to ensure safe and efficient use.


By practicing these preventive measures, you can significantly reduce the chances of damaging the mulching blade while using a push mower.

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