Bolens Lawn Mower 21 Inch

Are you in the market for a new lawn mower that can handle your yard maintenance needs? Bolens 21-inch lawn mowers are a popular option for many homeowners looking for a powerful and durable machine. In this comprehensive guide, we’ll provide key details on Bolens 21 inch lawn mowers to help you determine if this is the right mower for your lawn care needs.

What to Look for in a Bolens 21 Inch Lawn Mower

When researching Bolens 21 inch lawn mowers, there are a few key features and specifications to take note of:

• Engine size – These mowers are equipped with 140cc to 190cc Briggs & Stratton, Tecumseh or Bolens branded engines. The engine size impacts power and durability.
• Cutting width – A 21-inch cutting width allows you to mow more grass in fewer passes, saving time.
• Cutting height – Many Bolens 21 inch mowers offer adjustable cutting height from 1-4 inches, providing flexibility.
• Drive type – Options include rear-wheel drive for traction or front-wheel drive for maneuverability.
• Start type – Available start types are recoil, electric push button and auto choke to make starting easy.
• Grass collection – Some models have attachments for rear grass bags to collect clippings as you mow.
• Mulching capability – Many mowers can mulch clippings into the lawn for fertilization.
• Body material – Durable steel or aluminum deck construction prevents rust.
• Folding handle – A folding handle makes storage simple.
• Warranty – Bolens mowers come with 2-3 year limited warranties.

When comparing Bolens lawn mowers, be sure to consider the engine power, cutting width, adjustability and features to match your specific lawn’s needs. Models with more power and versatility allow you to tackle tougher mowing jobs.

How to Start a Bolens 21 Inch Lawn Mower

Starting up your new Bolens mower is easy if you follow these steps:

1. Check the oil and fuel levels. Most Bolens mowers need SAE 30 oil and standard 87 octane unleaded gasoline.
2. Move the mower outside to an open, flat area. Disengage the blade if equipped with a power takeoff switch.
3. Set the choke to the “Choke” or “Start” position. This provides a richer fuel mixture for starting.
4. Prime the engine if equipped with a primer bulb by squeezing it a few times. This sends fuel into the carburetor.
5. Stand behind the mower and pull the starter cord rapidly. It may take several hard pulls.
6. Once the engine starts, slowly adjust the choke to the “Run” position over a few minutes. Let the engine warm up.
7. Engage the blade drive using the power takeoff switch or bail.
8. Adjust the cutting height as needed using the height adjusters.
9. You’re ready to begin mowing! Go over the lawn in straight rows, overlapping slightly.

Always refer to the full owner’s manual for complete starting, operation and safety instructions. With some fuel and prep work, your Bolens mower will start right up.

Where to Buy a Bolens 21 Inch Lawn Mower

Bolens lawn mowers are sold by several major retailers, making them easy to find and purchase:

• Home Depot – The home improvement superstore carries a wide selection of Bolens mowers in-store and online. Often at the best prices.
• Lowe’s – Another home improvement chain that stocks many Bolens models nationally.
• Walmart – The superstore sells certain Bolens mowers depending on location and season. Worth checking for deals.
• Amazon – Convenient online ordering with free shipping for Prime members. Models and availability vary.
• Bolens website – The manufacturer’s website has a dealer locator tool to find mowers locally.
• Local dealers – Independent dealers may offer great prices and bundled deals on Bolens mowers, parts and service.

It’s a good idea to check prices between retailers, as sales and deals can vary. Often you’ll find the best selection and pricing for Bolens 21 inch mowers at Home Depot or Lowes. Online ordering from Amazon or the Bolens site also allows for easy home delivery.

Bolens 21 Inch Lawn Mower Cost Considerations

Bolens 21 inch lawn mowers range in price depending on the engine, features and place of purchase. Here are some average costs:

• Entry-level – Basic models start around $179 for a push mower with 140cc engine and steel deck.
• Mid-range – Most popular models cost $199 to $349. More power and features like variable speed drive.
• Heavy duty – Commercial grade mowers run from $399 to $699 for extra durability and power.
• Sales prices – Look for seasonal savings around spring time or Black Friday. Can often save $50 or more.
• Used mowers – Expect to pay 50% less for a used Bolens mower in good condition. Around $100 to $250 on resale sites.
• Parts/accessories – Replacement parts like blades, belts and batteries cost $15 to $75. Mulching kits $25-$100.

While you can find a basic Bolens for under $200, it’s worth investing in a more powerful mower in the $250 to $350 range if mowing larger yards. Look for engine sizes over 150cc and features like variable speed control. Shop sales and specials throughout the mowing season.

Maintaining your Bolens 21 Inch Lawn Mower

Taking proper care of your Bolens mower will help keep it running strong for years. Here are key maintenance tips:

• Change oil – Drain old oil and replace with new SAE 30 oil once a season or every 50 hours of mowing. Keeps engine lubricated.
• Check/replace spark plug – A new spark plug annually ensures easier starting and optimal performance.
• Inspect/sharpen blade – Sharpen or replace mower blades after every 25 hours of use for clean cuts.
• Clean air filter – Remove and clean the foam air filter regularly to allow proper airflow.
• Adjust/align wheels – Ensure wheels are adjusted to the proper height settings and aligned correctly.
• Clean underside of deck – Remove built-up grass clippings under the deck to prevent rust and clogs.
• Check belts/pulleys – Examine for signs of wear/cracking and replace worn parts when needed.
• Wash mower – Use a hose and mild soap to keep the mower housing and deck clean.
• Winterize – Drain gas, run carburetor dry and coat mower with a protectant in colder climates.

Following the mower and engine manufacturer’s maintenance guidelines will provide the best results. Investing a little time in seasonal Bolens mower care will extend its working life.

Bolens 21 Inch Lawn Mower Warranty Details

Most new Bolens lawn mowers come with the following limited warranty coverage:

• Engine – Backed by a 2-year consumer warranty through the engine manufacturer (Briggs & Stratton, etc). Covers defects in materials or workmanship.
• Mower – Bolens mowers have a 2 to 3-year consumer warranty on non-engine parts. Protects against defects.
• Battery – Lawn mowers with electric start have a 1-year replacement warranty on the battery.
• Limitations – Warranty is void if mower is misused, neglected or not maintained properly. Does not cover normal wear.
• Documentation – Dated purchase receipt showing model number required for warranty claims.
• Process – Users must take mower to an authorized service center for assessment and repair. Shipping costs may apply.

As with any power equipment, it’s important to read the Bolens operator’s manual for full warranty details. Follow proper use and maintenance guidelines to retain coverage. The included warranty provides nice assurance, but extended protection plans are also available for purchase at retailers.

Troubleshooting a Bolens 21 Inch Mower That Won’t Start

A Bolens mower not starting is usually caused by a minor issue that can be fixed with some simple troubleshooting:

• Check if the fuel tank is empty and refill with fresh gas if required. Let gas reach the carburetor.
• Ensure the spark plug is clean and the proper gap is set. Replace plugs annually.
• Clean the air filter of debris, reinstall correctly and ensure the choke is closing fully.
• Check that the blades can turn freely. Remove grass buildup under the deck if required.
• With electric start models, test the battery voltage. Recharge or replace battery as needed.
• Examine blade and engine drive belts for wear/damage. Replace worn belts.
• Make sure cables are connected properly and the safety switches are engaging.
• Drain old gas and replace with fresh fuel if it’s degraded over the off-season.
• Take mower to an authorized Bolens service center for repair if issues persist.

With some basic troubleshooting, you can often get your Bolens mower running again. Be sure to consult the owner’s manual for full diagnostics and safety checks. Proper maintenance and storage will help prevent starting issues.

Choosing the Right Oil for Bolens 21 Inch Mowers

Using the proper type and amount of oil is critical for keeping your Bolens mower engine running smoothly:

• Oil type – Most Bolens mowers require regular SAE 30 oil that meets API SJ-SN certifications. This standard motor oil provides adequate lubrication.
• Oil amount – Refer to the owner’s manual for exact capacity, typically 20 to 24 oz. Overfilling can cause smoking or engine damage.
• Checking oil – Check levels before each use with the mower on a flat surface. Fill to the “Full” mark on the dipstick.
• Changing oil – Drain and replace the old oil after first 5 hours of use, then annually or every 50 hours. Used oil must be disposed of properly.
• Alternative oils – Synthetic SAE 30 oils offer longer life but are not required. Avoid thicker oils that could impact flow.
• Using additives – Additives are unnecessary in a new mower and not recommended. They may void the engine warranty.

Be sure to frequently check the oil level in your Bolens mower engine. Regular oil changes using the manufacturer’s recommended SAE 30 oil will provide the best lubrication and cooling. This keeps your mower running smoothly season after season.

Step-by-Step Guide to Assembling a New Bolens Mower

Assembling a new Bolens lawn mower out of the box is straightforward by following these steps:

1. Carefully lift the mower body out of the carton and remove all packaging material. Check that all parts are present.
2. Install the attachment knobs, wheels, discharge chute, grass bag hooks and other loose parts as shown in the manual.
3. Add oil to the engine crankcase up to the “Full” mark on the dipstick. Avoid overfilling.
4. Insert a charged battery into the battery compartment if the mower has electric start.
5. Attach the starter rope handle by feeding it through the rope guide. Pull it to engage.
6. Install the mulching plug or side discharge chute depending on the mowing setup.
7. Make height adjustments on all wheels using the adjustment levers to the desired cutting level.
8. Add fresh unleaded gasoline to the fuel tank up to the fill neck. Do not overfill.
9. Review the owner’s manual safety instructions. Check that all parts are assembled correctly.
10. Start the mower following the starting procedures. Let the engine warm up before operating.

With proper assembly, your new Bolens mower will be ready for years of peak performance. Remember to check all components periodically to ensure they are tightened properly.

How Bolens 21 Inch Mowers Compare to Other Brands

Bolens 21-inch mowers are competitive with other top brands when it comes to power, construction and features:

• Toro – Comparable cutting width and engines. Toro offers more heavy duty commercial models. Bolens more budget friendly.
• Troy-Bilt – Nearly identical engine specs and steel decks. Bolens has more flexible height settings on some models.
• Craftsman – Both Craftsman and Bolens have attachable bagger options for yard cleanup. Bolens provides better bumper protection.
• Honda – Higher priced but known for very reliable smaller engines. Less variety of mower types than Bolens.
• Cub Cadet – Similar warranty coverage and mowing capability. Cub Cadet has more tractor-style riding mowers.
• Husqvarna – Commercial grade construction and power advantage on high-end Husqvarna models. Bolens lighter and more affordable.

While other brands may edge out Bolens on select specs, Bolens 21 inch mowers remain very competitively priced for the average homeowner’s needs. The key is comparing the engine power, transmission, features and warranties that best fit your lawn.

Where to Buy Replacement Parts for Bolens Mowers

There are several options when you need replacement parts for a Bolens lawn mower:

• Purchase parts directly from the Bolens website. Parts diagrams available to search for specific components.
• Visit a local Bolens authorized service center to get parts installed or pick up spares to DIY repair.
• Check hardware stores like Home Depot or Lowes which stock common parts like blades, belts, batteries and wheels.
• Search online retailers such as Amazon, PartsWarehouse, or RCPW which have a huge selection of mower parts that can be shipped to your door.
• Buy from small engine repair shops, online auction sites, or classified ads for used Bolens parts and accessories.

When possible, opt for OEM (original equipment manufacturer) Bolens parts which are designed for your mower’s specifications. Make sure to have your mower’s model number to find the right replacement components. Investing in quality parts will extend the life of your mower.

Step-By-Step Carburetor Cleaning on a Bolens Mower

If your Bolens lawn mower has surging, reduced power or trouble starting, it may need a carburetor cleaning:

1. Turn fuel valve off and disconnect the spark plug before servicing. Drain gas from tank.
2. Remove air filter housing and detach fuel line from carburetor inlet.
3. Take out carburetor mounting bolts and carefully remove carburetor. Clean exterior with carburetor cleaner spray and small brush.
4. Disassemble carburetor and remove jets, floats, gaskets. Soak components in carburetor cleaner bath. Agitate and brush parts clean.
5. Rinse all passages, jets and orifices thoroughly in cleaner. Dry components and spray lightly with compressed air.
6. Inspect components for wear/damage like float punctures or warped gaskets. Replace if needed.
7. Reassemble carburetor using diagram in manual for proper jet orientations and gasket positioning.
8. Reattach carburetor, fuel line and intake housing to engine. Reconnect spark plug wire.
9. Add fresh gas and start mower following manual instructions to test performance. May need minor idle adjustment.

Caution – work in a well ventilated area when cleaning carburetor parts. Follow all safety instructions to avoid fire hazards or exposure to fumes.

Thoroughly cleaning the carburetor can often get your Bolens mower engine running smoothly again without the cost of replacement. Consult your owner’s manual for full carburetor specifications.

Adjusting the Cutting Height on Your Bolens Mower

One advantage of Bolens 21 inch mowers is the ability to adjust the cutting height for the perfect lawn look:

• Use the dedicated height adjustment levers located above the front and/or rear wheels.
• Push levers outwards away from mower to unlock for height adjustment.
• Move levers up or down along notches to desired cutting position. Typically 1” to 4”.
• Release levers so they snap back inwards to an inner notch to lock the height.
• Set all wheels to the same height to keep the mower deck even.
• For rough, uneven lawns a higher 4″ cut prevents scalping and bogging.
• Lower 1-2” settings work for well-leveled lawns and tighter manicuring.
• Adjust cutting height higher during hot, dry periods to avoid lawn stress and conserve moisture.
• Raise cutting height prior to the last mow of season to help prepare the turf for winter.

Take advantage of the adjustable settings on your mower for the best cut quality and lawn health throughout the growing season. Letting grass grow an extra inch taller adds root mass and drought tolerance.

Common Problems to Watch for on Bolens Mowers

While Bolens mowers are generally quite durable, there are a few common issues to look out for:

• Won’t start – This is often due to stale fuel, a dirty carburetor, faulty spark plug or starter rope problems.
• Engine runs rough – A clogged air filter, bad gas, dirty carburetor or worn spark plug can cause roughness.
• Excessive vibration – This is typically caused by a damaged or bent blade that needs sharpening or replacement.
• Uneven cut – Improper tire pressure, bent blade or uneven cutting height settings lead to unevenness.
• Oil leakage – Look for leaks and re-seal the crankcase gasket if it becomes brittle and develops cracks.
• Deck rust – Paint chipped areas and wax the deck regularly to prevent rust corrosion.
• Belt wear – Frayed or cracked belts need replacement to avoid slippage and reduced power.
• Battery issues – Recharge or replace the battery as needed on electric start models.
• Pull cord problems – Replace the starter rope if fraying or to fix recoil spring malfunctions.

To maximize the lifespan of your Bolens mower, perform regular maintenance and catch issues early before they intensify. Opting for original equipment replacement parts generally provides the best fit and performance.

How to Properly Sharpen the Blades on Bolens Mowers

Sharpening the blades on your Bolens lawn mower is essential to maintaining a healthy, cleanly cut lawn. Here are some tips:

• When to sharpen – Inspect blades before each mowing session. Sharpen if nicks, dull edges or wear are visible. Or if grass appears frayed after cutting.
• Blade removal – Unbolt the blade from the underside of the mower deck using a wrench. A block of wood can secure the blade from turning.
• Cleaning – Remove dirt, grass and rust buildup from the blades before sharpening using steel wool, a wire brush or sandpaper.
• Type of file – Use a 10-12 inch single-cut mill file designed for sharpening blades. Don’t use a wood rasp or power grinder.
• Sharpening angle – Match the bevel angle of roughly 30° already on the blade edge and file at that angle on each side.
• Number of strokes – Limit strokes to 5-8 per side. Too many can over-grind the blade, weakening it.
• Balancing – Improper balancing leads to vibration, so check balance after sharpening.
• Reinstall – Securely bolt sharpened blade back onto the mower with the airfoils pointing up towards deck.

Be sure to wear leather gloves and eye protection when sharpening. Take care not to overheat and ruin blade temper. A correctly sharpened blade provides cleaner grass cutting for a healthier lawn.

Choosing the Right Fuel for your Bolens Mower

Using fresh, clean fuel is vital for peak Bolens mower performance:

• Gasoline type – Regular 87 octane unleaded gasoline provides the most economical fuel choice.
• Ethanol content – Look for gasoline with 10% or less ethanol to prevent corrosion issues from higher concentrations.
• Premium gasoline – Higher octanes are not required for mowers and offer no benefit unless pre-detonation is an issue.
• Fuel stabilizers – Additives help treat fuel ethanol and prevent stale gas during storage. Use fuel treatments like STA-BIL.
• New gas – Always start the mowing season with fresh fuel. Old gas degrades and causes hard starting.
• Proper storage – When storing the mower, drain fuel or add stabilizer to prevent gumming.
• Gas can – Use an approved portable gas can for safety and to prevent contamination from dirt or water.
• Operating orientation – Avoid tilting the mower on slopes. This can cause fuel flow issues.

Regularly inspect fuel lines and filters for blockage. Clean the carburetor as needed if old fuel residues build up. Choosing fresh 87 octane gas stabilized with ethanol treatment offers the best performance.

How Long Can You Expect a Bolens Mower to Last?

Like most mower brands, the lifespan of a Bolens lawn mower depends on several factors:

• Frequency of use – Mowers used 2-3 times per week hold up better than daily heavy use.
• Yard size – Mowers suited for average residential lots last longer than over-taxed units on large properties.
• Maintenance habits – Following the owner’s manual for service intervals extends the mower’s life dramatically.
• Storage – Storing mower properly over winter and avoiding corrosion damage adds years of use.
• Original parts – Replacing components with OEM parts maintains integrity. Cheap parts fail sooner.
• Model grade – More expensive commercial units ($400+) made of steel last longer than basic aluminum models.
• Usage – General yard mowing is ideal. Using mowers on brush or overgrowth decreases longevity substantially.

With proper maintenance and care, a standard Bolens mower should provide 5-8 years of use for the average homeowner. Commercial-grade units may operate 8-10 years with proper upkeep. Timely part replacement and winterization maximizes the years of reliable service.

Winterizing Steps for Bolens Lawn Mowers

Putting your Bolens mower into storage over winter requires some basic steps to prevent issues come spring:

• Drain all fuel from the tank and run the engine until it dies to use up remaining gas in carburetor.
• Disconnect the spark plug and crank the engine a few times to eliminate fuel residues. Apply lightweight oil into the cylinder and pull the cord to coat internals.
• Remove accumulation of grass clippings on the underside of the mower deck and clean off any dirt buildup on the housing.
• Wax the mower body and deck with a protectant to avoid corrosion and rust over the winter season.
• Replace the air filter and oil as part of end of season service. This avoids degraded components sitting all winter.
• For electric start models, remove the battery and bring indoors. Trickle charge the battery over the winter to keep maintained.
• Store mower in a dry, covered area like a shed or garage to prevent exposure to rain, snow and other elements all season.
• Consider using a lawn mower cover for an extra layer of wintertime protection if storing in a more exposed area.

Taking care to winterize your machine properly will ensure your Bolens mower starts right up come next mowing season. Don’t forget to re-attach the spark plug in spring!

What Customers are Saying About Bolens 21-Inch Mowers

Reviews of Bolens 21-inch mowers from homeowners praise their combination of value, durability and performance:

• “Easy to assemble out of the box and fired right up. Handles my small suburban lawn well.”
• “Powerful 190cc Briggs & Stratton engine never bogs down in taller grass.”
• “Cutting height adjusts easily for my desired lawn length.”
• “Much better quality for the price than a cheap home store brand mower I’ve owned.”
• “Seems very sturdy and well-made after two seasons of use.”
• “Always starts on the first or second pull thanks to the spring-assist starting.”
• “Half the price of a Toro mower but works just as well mulching and bagging clippings.”
• “Bolens mower has proven very reliable once I got the right mowing patterns down.”

Satisfied customers find these mowers are an ideal blend of lawn cutting ability and affordability. As with any mower, allowance for proper break-in and maintenance maximizes long-term satisfaction.

Are Bolens 21-Inch Mowers Suitable for Large Yards?

The larger 190cc engines on Bolens 21-inch mowers can effectively handle moderate-sized yards up to a half acre:

• More powerful than 160cc mowers better suited to small, flat lawns under 1/4 acre.
• 190cc rating provides enough extra torque for up and down slopes or thicker grass.
• Wider 21-inch cutting width reduces mowing time over smaller decks.
• Steel frames and wheels stand up to the additional use and vibration of bigger yards.
• Rear-wheel drive on some models provides improved traction on slopes and hills.
• Mulching and optional rear bagger systems allow management of extra clippings.
• Larger fuel tanks around 1 gallon keep big yards mowed on one fill-up.

The 190cc Bolens mowers strike a nice balance between residential use and light-duty commercial needs. Just don’t expect the productivity of heavier zero-turn mowers on larger acreage. Proper mowing patterns also make a big difference on larger lawns.

Key Takeaways on Bolens 21-Inch Lawn Mowers

• Check engine size, cutting width, deck material and features when choosing the right Bolens mower for your lawn.
• Follow instructions for fuel, oil, choke settings and pull-start techniques when starting your Bolens mower.
• Home improvement stores like Lowe’s and Home Depot offer the widest selection and competitive pricing on Bolens mowers.
• Proper maintenance with regular oil changes, blade sharpening, cleaning and winterization will extend the life of your mower.
• Troubleshoot issues like no start conditions and rough running to get your Bolens mower operating optimally again.
• Using the recommended SAE 30 oil and fresh 87 octane gasoline provides the ideal fuel mixture.
• With regular upkeep, expect 5-8 years of use from a Bolens mower for the typical residential setting.

We hope this comprehensive guide helps you select the perfect Bolens mower and keep it performing for seasons to come! Let us know if you have any other questions.