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A Greenworks lawn mower won’t start for a handful of predictable reasons, and most of them come down to the battery, the safety key or switch, a dead or dirty spark source, or an old fuel problem on gas models. Before you shop for a replacement, it helps to know which category your mower falls into, because the fix (and whether a new machine makes sense) depends on it. This guide covers the most common causes, the selection criteria that matter if you do decide to replace the mower, and nine well-regarded options grouped by the kind of yard they suit.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Greenworks 40V 21-Inch Cordless Push Mower | Small to medium lawns, first-time cordless owners | Lightweight brushless-style cordless platform with a shared battery system |
| Greenworks 80V 21-Inch Brushless Self-Propelled Mower | Medium lawns that need less pushing | Self-propelled drive with 80V battery platform |
| EGO Power+ 21-Inch Self-Propelled Mower | Medium to large lawns, long runtimes | High-capacity battery platform and strong runtime for its class |
| Ryobi 40V 21-Inch Brushless Push Mower | Small yards and budget-minded buyers | Brushless motor with a wide range of shared 40V tools |
| Toro Recycler 22-Inch Gas Push Mower | Medium yards that need a gas mower with simple starts | Mulching and bagging versatility with a reliable engine |
| Honda HRN216VKA Gas Push Mower | Owners who want the most dependable gas starts | Honda engine with a well-known start and maintenance record |
| Craftsman M220 Gas Push Mower | Budget gas mower for small to medium lawns | Simple push design with easy-access maintenance points |
| Troy-Bilt TB230 Gas Push Mower | Medium lawns that need a sturdy self-propelled option | Self-propelled drive with a 140cc-class engine |
| Husqvarna LC 221i Cordless Push Mower | Owners who want a premium cordless build | Durable steel deck with a cordless platform suited to fine-grass lawns |
Greenworks 40V 21-Inch Cordless Push Mower
This is a natural fit for owners whose Greenworks mower already runs on the 40V platform and who want a straightforward replacement without learning a new battery system. It suits lawns up to roughly a quarter acre where a push design is comfortable.
Key specs
- 21-inch cutting deck
- 40V lithium-ion battery platform
- Push (walk-behind) operation
- Electric start with no gas or oil maintenance
Pros
- No fuel, oil or spark plug to maintain
- Shares batteries with other Greenworks 40V tools
- Quiet operation compared with gas models
Cons
- Runtime depends on battery capacity and grass height
- Push design requires more effort on thick or hilly lawns
Greenworks 80V 21-Inch Brushless Self-Propelled Mower
Owners with medium lawns who want less physical effort and a more capable cordless platform will find this a logical step up. It is a good match for anyone who has been fighting a heavy push mower on a yard of around a half acre.
Key specs
- 21-inch cutting deck
- 80V battery platform
- Self-propelled drive
- Brushless motor design
Pros
- Self-propelled drive reduces fatigue
- Higher-voltage platform for stronger cutting performance
- No gas starting issues to troubleshoot
Cons
- Battery and charger add meaningful weight to the setup
- Requires charging time between longer mowing sessions
EGO Power+ 21-Inch Self-Propelled Mower
This suits owners of medium to large lawns who want long runtimes and a well-established battery ecosystem. It is often considered by people who are moving away from a gas mower that has become unreliable to start.
Key specs
- 21-inch cutting deck
- Self-propelled drive
- Power+ lithium-ion battery platform
- Multiple mulching and bagging options
Pros
- Strong runtime with higher-capacity batteries
- Broad compatibility with other EGO Power+ tools
- Solid build for regular mowing schedules
Cons
- Higher-capacity batteries are heavier
- Platform is more committed than a single-tool purchase
Ryobi 40V 21-Inch Brushless Push Mower
Small yards and buyers who already own Ryobi 40V tools will find this one practical. It is a sensible choice for a lawn that does not need the power of a self-propelled model.
Key specs
- 21-inch cutting deck
- 40V battery platform
- Brushless motor
- Push (walk-behind) operation
Pros
- Works with a large family of shared 40V tools
- Brushless motor offers efficient runtime
- Simple, low-maintenance operation
Cons
- Push design can feel demanding on larger lawns
- Runtime drops with tall or wet grass
Toro Recycler 22-Inch Gas Push Mower
For owners who want to stay with gas but need a more dependable start than an older or budget engine provides, this is a widely recognized option. It works well on medium yards where mulching is useful.
Key specs
- 22-inch cutting deck
- Gas engine with recoil or electric start depending on model
- Mulching, bagging and side-discharge capability
- Push (walk-behind) operation
Pros
- Mulching system returns clippings to the lawn
- Broad service network for parts and repairs
- Good cut quality on regularly maintained lawns
Cons
- Gas models require regular fuel and oil care
- Heavier than many cordless alternatives
Honda HRN216VKA Gas Push Mower
Owners who have had repeated starting trouble with other brands often look to Honda for its engine reputation. This is a dependable pick for a medium lawn where easy, consistent starts matter most.
Key specs
- 21-inch cutting deck
- Honda four-stroke engine
- Electric start option on this model
- Push (walk-behind) operation
Pros
- Honda engines have a strong reputation for starting reliability
- Good documentation and maintenance access
- Solid build quality on the deck and frame
Cons
- Premium positioning compared with budget gas mowers
- Still requires regular oil changes and air filter care
Craftsman M220 Gas Push Mower
This is a budget-friendly gas option for small to medium lawns. It suits a homeowner who wants a simple machine with straightforward maintenance and no complicated features.
Key specs
- 21-inch cutting deck
- Gas engine
- Push (walk-behind) operation
- Easy-access maintenance points
Pros
- Simple design that is easy to service at home
- Budget-friendly option within gas models
- Widely available parts
Cons
- Engine and build are basic compared with premium brands
- Gas maintenance is still required
Troy-Bilt TB230 Gas Push Mower
Medium lawns that need a sturdy self-propelled gas option will find this a practical choice. It is a common next step for owners who have outgrown a basic push mower.
Key specs
- 21-inch cutting deck
- Self-propelled drive
- Gas engine in the 140cc class
- Mulching and bagging capability
Pros
- Self-propelled drive reduces effort on medium lawns
- Mulching capability is useful for regular mowing
- Widely available service parts
Cons
- Gas engine needs regular fuel and oil attention
- Heavier than most cordless self-propelled options
Husqvarna LC 221i Cordless Push Mower
Owners who want a premium cordless build with a durable steel deck will find this one worth a look. It is a better match for well-kept fine-grass lawns than for rough, uneven ground.
Key specs
- 21-inch steel cutting deck
- Cordless battery platform
- Push (walk-behind) operation
- Mulching and bagging options
Pros
- Steel deck is known for durability
- Premium cut quality on maintained lawns
- No gas starting issues to manage
Cons
- Premium positioning compared with most cordless options
- Battery platform is brand-specific
Buying Guide
If the Greenworks mower is beyond repair or the cost of fixing it is close to the cost of a new machine, replacing it makes sense. Before you buy, though, confirm the actual cause. Many “won’t start” complaints come from a dead battery, a loose connection, a disengaged safety bail, or old fuel, all of which are fixable in under an hour.
Selection criteria
The most useful criteria for a replacement are yard size, power source, and how much physical effort you are willing to spend. Cordless models remove fuel and spark maintenance but depend on battery capacity. Gas models offer long runtime and easy refueling but need regular service.
Important features
- Cutting deck width: 21 inches is common for small to medium lawns; wider decks cover ground faster.
- Drive type: Push models are lighter; self-propelled models reduce fatigue on larger or hilly yards.
- Starting system: Electric start is easier than recoil, especially for owners with limited upper-body strength.
- Battery platform: If you already own tools from one brand, sharing batteries can lower the overall cost of ownership.
Specs to check
- Deck width in inches and cutting height range
- Battery voltage and amp-hour rating for cordless models
- Engine displacement in cubic centimeters for gas models
- Mulching, bagging and side-discharge options
Choosing by need
- Small yard, minimal effort: A cordless push mower is usually enough.
- Medium yard, less pushing: A self-propelled cordless or gas model fits well.
- Large yard or long mowing sessions: Higher-capacity batteries or a gas self-propelled model give better runtime.
- Frequent starting trouble with an older gas engine: A newer gas engine with a known start record, or a cordless model, removes that problem.
Things to watch out for
- Fuel that has sat for months can gum the carburetor. Use fresh gasoline or stabilized fuel.
- Battery packs that are not fully charged or are old will show reduced runtime and may not start the motor under load.
- Safety features such as the operator presence bar must be engaged for the mower to start.
- Battery and charger compatibility varies by platform; check before buying a second battery.
FAQ
Why won’t my Greenworks mower start when I press the button?
The most common reasons are a battery that is not fully seated, a battery that is discharged or old, or the safety bail not being held down while you press the start button. Remove the battery, clean the contacts, reinsert it firmly, and try again with the bail engaged.
Does a Greenworks mower need to be charged before first use?
Yes. Charge the battery fully before the first use and follow the charging instructions in the manual. A partly charged pack may power the mower briefly but may not start the motor reliably under load.
How long should a Greenworks battery last between charges?
Runtime depends on the battery capacity, grass height, lawn size and how hard the mower is working. Owners typically report shorter runtimes on tall or wet grass, so mowing regularly at a moderate height helps.
What should I check first on a gas mower that won’t start?
Check the fuel for freshness, confirm the spark plug wire is connected, make sure the choke is set correctly for a cold start, and verify the safety bail is engaged. Fuel that has sat for several months is one of the most frequent causes of no-start conditions.
Is it worth replacing a Greenworks mower instead of repairing it?
It depends on the cause and the age of the machine. A dead battery or a loose connection is usually inexpensive to address. If the motor, electronics or deck are badly damaged, replacement may be the better choice. For electrical or gas-engine repairs beyond basic maintenance, consider a qualified small-engine technician.
Can I use a battery from one Greenworks tool in another?
Batteries are generally designed to work across tools within the same voltage platform. Check the manufacturer’s compatibility list, because a 40V battery will not work in an 80V tool.
How often should I service a gas mower to avoid starting problems?
Manufacturers commonly recommend changing the oil and checking the air filter at least once per season, with spark plug inspection on the same schedule. Using fresh fuel and adding stabilizer for storage prevents most carburetor problems.
Conclusion
When a Greenworks lawn mower won’t start, work through the battery, safety features and fuel before deciding to replace it. If you do replace it, match the mower to your lawn size and effort tolerance. Small yards with minimal effort suit the Greenworks 40V cordless push mower or the Ryobi 40V brushless push mower. Medium lawns that need less pushing fit the Greenworks 80V self-propelled model, the EGO Power+ self-propelled mower or the Troy-Bilt TB230 gas self-propelled option. For gas owners who value reliable starts, the Honda HRN216VKA and Toro Recycler are the most often recommended choices, while the Craftsman M220 covers budget gas needs. Owners who want a premium cordless build with a steel deck should consider the Husqvarna LC 221i. For step-by-step troubleshooting on your specific model before you buy, see the related guides on this site.
