Yard Machines 21 Mower

Everything You Need to Know Before Purchasing a Yard Machines 21-Inch Mower

Are you in the market for a new lawn mower? Looking for an efficient, affordable option to keep your lawn neatly manicured this season? Yard Machines 21-inch mowers are a popular choice for many homeowners seeking a powerful, durable walk-behind mower.

Before purchasing a Yard Machines 21-inch mower, it’s important to understand what these mowers have to offer. In this comprehensive buying guide, we’ll provide key information on Yard Machines 21-inch mowers to help you determine if this is the right mower for your needs.

Where to Buy Yard Machines 21-Inch Mowers

Yard Machines mowers are manufactured by MTD Products, a major producer of outdoor power equipment. You can purchase Yard Machines 21-inch mowers from several major retailers, both in-store and online.

Some of the most popular places to buy include:

• Home Depot – Frequently stocks 21-inch Yard Machines mowers both in-store and online. Often runs sales and promotions on Yard Machines mowers.
• Lowe’s – Another major home improvement retailer selling Yard Machines mowers in-store and through their website. Provides models from the entry-level LM150 to higher-end options.
• Walmart – Typically offers several Yard Machines 21-inch mowers in-store and online at competitive prices. Models may differ by location.
• Amazon – Large selection of Yard Machines mowers available online for convenient shipping. Includes listings from third-party retailers.
• Local lawn and garden stores – Independent dealers may carry Yard Machines mowers, especially in areas where MTD has a strong customer base. Call ahead to check availability.

Starting the Mower

Starting a Yard Machines 21-inch mower is straightforward, though specific starting procedures vary slightly by model. Here are the general steps:

• Check oil and fuel levels before starting. Most 21-inch Yard Machines mowers require regular unleaded gasoline.
• Make sure the blade control is disengaged and set the mower to the neutral/stop position. This prevents the blades from turning when started.
• Locate the primer bulb and prime the engine if needed. This helps fuel flow for starting.
• Engage the safety key or switch. This completes the starting circuit so you can turn the engine over.
• Use the recoil starter or electric start button to turn over the engine. Gently pull the recoil cord or hold the electric start until the engine runs.
• Allow the engine to warm up briefly before disengaging the blade brake and beginning to mow.

Refer to your owner’s manual for specifics on starting your Yard Machines mower model. Proper starting technique maximizes convenience and prevents engine wear over time.

Engine Types

Today’s Yard Machines 21-inch mowers come equipped with reliable, modern overhead valve (OHV) engines. Here are some of the most common engine types:

• Briggs & Stratton engines – This popular small engine brand is featured on many baseline Yard Machines mowers. Known for dependable starting and smooth performance.
• MTD/Powermore engines – MTD’s own engine line, often found on mid-range Yard Machines mowers. Provides adequate power at a competitive price point.
• Honda engines – Top-of-the-line Yard Machines models may come equipped with a Honda engine, prized for its efficiency, power, and reliability.
• Electric start engines – Many 21-inch Yard Machines mowers offer optional electric start equipped engines for easy starting with the push of a button.

When choosing your mower, evaluate the engine power, displacement, and features to ensure it will handle your lawn size and terrain. More powerful engines improve mowing performance.

Changing the Engine Oil

To keep your Yard Machines mower running at peak efficiency, regular oil changes are essential. Most 21-inch Yard Machines mowers need oil changes every 25 hours of operation or yearly, whichever comes first. Here are the oil change steps:

• Run the mower briefly to warm up the engine and oil, which allows for thorough draining.
• Locate the oil fill and drain ports, accessible from the side or rear of the mower.
• Have a suitable container ready to catch drained oil. Slowly remove the drain plug or cap and allow the dirty oil to completely drain.
• Replace the drain bolt securely when finished and dispose of old oil properly.
• Using a funnel, pour new oil into the fill port according to your owner’s manual. Most capacities are around 20 oz.
• Check the dipstick to ensure the oil level falls between the full and add marks. Top off if needed.
• Replace the oil fill cap when finished and run the mower briefly to circulate the new oil.

Proper oil changes prevent damaging sludge buildup and reduce friction on internal mower components. Always use oil weight recommended for your specific engine and climate.

Self-Propelled or Push Mower

Yard Machines 21-inch mowers are available in both self-propelled and push mower configurations:

• Self-propelled models use a rear-wheel drive system engaged by a control lever that powers the mower forward with less user effort. Ideal for larger, flatter lawns.
• Push mowers require the user to physically push the mower across the lawn. Best for smaller yards with lots of trees/obstacles. Budget-friendly option.

Self-propelled mowers improve maneuverability and reduce the physical demands of mowing, though they cost a bit more. Evaluate your strength, lawn size, and terrain to choose the best drive system for your needs.

Some 21-inch Yard Machines mowers offer variable speed rear-wheel drive to fine-tune your mowing pace. Handle height also impacts ease of pushing non-self-propelled models.

Fuel Type

The vast majority of 21-inch Yard Machines mowers are designed for standard unleaded gasoline. This provides the power needed for the mower’s displacement engine to operate under load.

Key tips for fueling your Yard Machines mower properly:

• Use fresh unleaded gas with an octane rating of 87 or higher to prevent knocking. Do not use E85.
• Avoid overfilling the small fuel tanks, usually around 1 – 1.5 quarts capacity. This can lead to spills.
• Add fuel stabilizer to keep gas fresh between uses, reducing starting issues.
• Check fuel levels before each mowing session and top off if low. Running dry damages carburetors.
• Follow proper safety procedures when handling gasoline. Move the mower away from ignition sources when refueling.

While gasoline engines are most common, a few electric corded and battery powered Yard Machines mowers are also available for specialized needs.

Sharpening the Blades

Keeping your Yard Machines mower blades razor-sharp is crucial for optimal cutting performance and healthy grass. As blades dull over time from hitting objects, mowing time increases significantly.

Here’s a step-by-step guide to sharpening blades on a 21-inch Yard Machines mower:

• Disconnect the spark plug before servicing to prevent accidental starting.
• Drain the fuel or turn the mower on its side to access the blade(s). Use thick gloves to carefully remove the blade bolts and pull off the blades.
• Inspect the blades for major damage like cracks or excess wear. Badly damaged blades should be replaced.
• Use a metal file to sharpen the cutting edges of intact blades. Maintain the original sharpening angle and file until very sharp.
• Balance the blades using a balancer tool or simply place them on a nail. File extra material off the heavy side until balanced.
• Reinstall the sharpened blades with the original hardware, tightening bolts to the torque in your mower’s manual.
• Test the cutting action to ensure blades don’t wobble. Adjust if needed before mowing.

Proper blade sharpening is easily mastered with basic tools. Consider replacement blades every 2-3 seasons for optimal longevity.

Mower Warranty Overview

Yard Machines 21-inch mowers come backed by strong limited warranty protection against defects in materials or workmanship:

• Engine – Covered by a warranty through the engine manufacturer, typically 2 years for Briggs & Stratton and Honda engines. Includes parts replacement.
• Mower – 1 year limited warranty through MTD covering components like frames, housings, and controls.
• Battery – On electric start models, the battery has a full 1 year replacement warranty from MTD.

To qualify for warranty coverage, basic maintenance outlined in the owner’s manual must be performed. Warranty protection does not cover damage from improper use, lack of maintenance, or normal wear.

Retain your receipt and mower paperwork for proof of purchase. Work directly with an authorized service dealer for any warranty repairs needed.

Mower Assembly

Assembling a new Yard Machines 21-inch mower out of the box is straightforward, with only a handful of parts requiring installation. Here is an overview:

• Carefully unpack all mower components and compare with manual instructions. Contact retailers immediately about missing pieces.
• Use provided tools to install handlebars onto the mower deck with included hardware. Adjust to correct height and tighten securely.
• Attach any discharge chutes or guards using the specified bolts and brackets. Ensure proper alignment with deck.
• Add oil and fuel as directed in the engine manual. Avoid overfilling.
• If equipped, connect the battery terminals or power cord.
• Double check blade tightness, tire pressure, fluid levels and other key areas before starting engine.

With proper assembly according to the directions, your new Yard Machines mower will be ready for break-in and service in your lawn.

Cutting Height Adjustment

One advantage of Yard Machines 21-inch mowers is the ability to adjust cutting height based on your preferences and grass type:

• Locate the cutting height lever, typically above the rear wheels. The notches adjust height.
• Raise the lever towards the handlebar to increase height from minimum (1″) up towards maximum (4″). Start high to avoid scalping.
• Lower the lever towards the mower deck to reduce cutting height in increments. This allows closer trimming.
• Adjust cutting height with the mower off. Check both sides to ensure even height.
• Allow grass to slowly adapt if drastically increasing or decreasing cut height.

Match cutting height to type of grass, season, and desired lawn appearance. For example, 3-4″ suits most lawns in summer, while 1-2″ neatens things up closer in fall.

Finding the Owner’s Manual

Yard Machines owner’s manuals provide key operating, maintenance, and safety information. If you’ve misplaced the printed manual that came with your mower, there are a few ways to find a replacement copy:

• Check the MTD website’s operator’s manual lookup and enter your model number. Can directly download a PDF.
• Request a manual by calling the Yard Machines customer support line at 1-800-800-7310. They can email or mail you one.
• Visit ManualsLib.com and search for your specific Yard Machines mower make and model to see electronic manuals available.
• Stop by your local home improvement store’s Yard Machines section. Printed manuals are sometimes on display. Ask customer service for help.
• As a last resort, generic mower manuals provide basic guidance on operation, maintenance and safety.

Keeping your mower manual accessible enables you to optimize performance, upkeep, and safety.

Post-Mowing Mower Care

Proper cleaning and maintenance after mowing helps preserve your Yard Machines investment. Here is a post-mowing checklist to follow:

• Allow the mower to fully cool before post-mowing maintenance to avoid burns.
• Use a hose or compressed air to remove grass clippings from the mowing deck’s underside and discharge chute. Avoid buildup.
• Wipe the mower body clean of debris and dirt with a damp cloth. Check for loose hardware or damaged parts.
• Empty the bagging system or clear clogged clippings to prepare for the next mow. Look for wear.
• Inspect the underside and sharpen, replace, or balance blades if needed.
• Clean air filters as recommended in owner’s manual. Check engine oil level.
• Touch up any chipped paint to limit rust damage. Lubricate cables and linkages.

Keeping your Yard Machines mower debris-free, dry, and well-maintained ensures it stays in top operating condition mow after mow.

Yard Machines 21-Inch Mower Pricing

As an affordable, entry-level mower brand, Yard Machines 21-inch walk-behind mowers range from about $180 on the very low end to around $300 for higher-end self-propelled models.

Pricing depends on several key factors:

• Engine power – More torque and displacement increases cost. Honda engines command a premium.
• Electric start – Push button start adds $50+ over pull-start engines.
• Drive system – Self-propelled mowers cost $40-$75+ more than push models. Variable speed adds even more.
• Deck material – Steel lasts longer than plastic.
• Features – Additions like bagging systems, washout ports, and mulching kits raise mower price.

When comparing models, consider how much mowing performance, durability, and features justify the price differences for your needs.

Mower Durability

In general, Yard Machines 21-inch mowers provide good durability for the price when properly maintained:

• Deck shells are built from rugged steel or durable polymers designed to withstand yard hazards.
• Key components like wheels, levers, and controls use steel for strength versus flimsy plastics.
• Reliable engine choices from major brands like Briggs & Stratton, Honda, or MTD Powermore.
• Painted exteriors and zinc/nickel plated hardware resist rusting and corrosion issues.
• Sealed ball bearings in wheels and metal blade adapters improve longevity.

With proper seasonal maintenance and care, a Yard Machines mower should provide at least 5-8 years of use for the average residential lawn before major repairs are needed. This aligns with the 1-3 year limited warranties.

Heavier usage, improper maintenance, and lack of winterization decreases expected lifespan. But overall Yard Machines mowers provide good bang for your buck.

Handling Uneven Terrain

The 21-inch deck size and wheel design of Yard Machines mowers make them suitable for minor ground imperfections, but not very hilly terrain:

• Relatively light weight compared to wider mowers improves maneuverability on uneven turf.
• Medium length wheelbase maintains stability on slight slopes and bumps up to 15 degrees.
• 7-9” wheels with tread gain decent traction without getting stuck.
• Blade underside close to ground helps block debris from being thrown on uneven ground.

However, for yards with steep hills, ditches, or very rough landscape, the small wheels on a Yard Machines mower lose traction quickly. Wider, heavier duty mowers perform better on slopes above 15 degrees.

For mildly uneven level yards with a few dips and rises, a Yard Machines 21-inch mower provides adequate handling. Just take slopes slowly and carefully.

Spark Plug Replacement

Replacing the spark plug yearly helps keep your Yard Machines engine starting smoothly. Follow these steps:

• Disconnect the spark plug wire and use a wrench to remove the old plug.
• Inspect the electrode. Significant wear or fouling indicates a need to address engine issues.
• Check the new plug gap matches the engine manual specs, usually around .030 inches. Adjust if required.
• Carefully thread in the new plug by hand until tight. Use a wrench for final 1/4 turn. Don’t over-tighten.
• Reattach the plug wire securely to the plug’s terminal.

Let the mower run briefly to ensure normal starting with the new plug. Check for occasional misfires that indicate a gap issue.

Use manufacturer recommended spark plug types. Avoid worn or fouled plugs that cause hard starting.

Common Yard Machines Mower Issues

While generally reliable, here are some common issues reported on Yard Machines 21-inch mowers:

• Hard starting – Often caused by bad spark plugs, stale fuel, or engine gunk buildup over time. Maintain fresh gasoline and change plugs/filters.
• Reduced power – Dirty air filters lead to poor engine performance. Follow filter cleaning schedules.
• Leaking oil – Check the oil drain bolt, plug, and gaskets. Keep proper oil levels. Replace worn gaskets.
• Excess vibration – Imbalanced, bent, or loose blades create vibration. Sharpen blades, replace if damaged, and secure hardware.
• Declining cut quality – Indicates dull mower blades due to hitting objects while mowing. Regularly sharpen blades.
• Wheels won’t turn – Clean out grass clippings around wheels/drivetrain. Lubricate axles and check for debris.

With regular upkeep and following break-in guidelines, many issues can be minimized or avoided with a Yard Machines mower.

Winterizing the Mower

Preparing your Yard Machines mower for storage over winter helps prevent carburetor and engine damage:

• Drain old fuel from the tank and run the engine until it stalls to use up remaining gas in the system.
• Change the oil and filter prior to winterizing since old oil has accumulated contaminants. Dispose of properly.
• With the spark plug disconnected, spray fogging agent into the spark plug hole to coat internals. Turn the engine to distribute it.
• Wipe down the mower body and undercarriage to remove all grass and debris which can attract moisture.
• Move the mower to a covered location like a shed or garage to shield from weather and pests.
• Disconnect and remove the battery if equipped, storing it warm and fully charged.

Proper winterization saves time and money next spring. Just add fresh fuel and do standard pre-start checks before resuming mowing.

Ease of Maintenance

One benefit of Yard Machines mowers is their straightforward maintenance similar to most mowers:

• Oil changes and filter cleanings follow standard intervals based on hours run – easy for DIYers.
• Spark plugs and air filters are accessible and easy replacements. Basic tools suffice.
• Cutting blades bolt on/off with common hardware for blade servicing.
• Adjustment points are externally accessed like cutting height levers and throttle controls.
• Basic starter maintenance like rope and belt replacements is very doable at home.

With basic mechanical skills and following the owner’s manual, Yard Machines mowers provide homeowners the ability to personally handle much of the routine upkeep required themselves instead of paying for shop repairs.

Yard Machines 21-Inch Mower Reviews

When considering a Yard Machines mower purchase, real-world owner reviews provide helpful insight into the pros and cons:

• Owners praise the easy starting, smooth power, and reliability of Briggs & Stratton engines on most models.
• Handling on uneven turf earns mixed reviews – performs decently on bumpy yards but can struggle on steep slopes.
• Cutting performance gets excellent marks when blades are regularly sharpened. Wet grass handling is rated as just average.
• Build quality earns an average rating – decent for home use but not commercial grade.
• Most describe Yard Machines mowers as a great value for smaller, relatively flat lawns. Limitations on sloped, overgrown lawns.

Checking multiple online reviews helps identify the best Yard Machines model for your specific mowing needs based on owner experiences. Test in person when possible.

Conclusion

From engine types and drive systems to maintenance tips and reviews, this complete guide provides the key facts and considerations for shopping Yard Machines 21-inch walk-behind mowers. Take the time to carefully evaluate the options to find the right balance of power, durability, and value for your lawn care needs. With proper operation and maintenance, Yard Machines mowers deliver years of reliable service. Compare the models and features available at Home Depot, Lowes and other major retailers to lock in the perfect mower for your yard.