Greenworks Scarifier Review
Greenworks offers a range of cordless scarifiers designed to remove thatch and moss from your lawn without the hassle of a petrol engine or power cable. This review breaks down the key models, their performance, and how they compare to the competition.
Quick answer
The Greenworks 40V Cordless Scarifier (G40LM41KS) is the top pick for most homeowners, offering excellent thatch removal, a large collection box, and long runtime. For smaller lawns, the 24V model is a capable and more affordable alternative.
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Research updated June 2026.
Greenworks 40V Cordless Scarifier (G40LM41KS)
Excellent thatch removal with a large collection box and long runtime.
Pros
- Powerful 40V brushless motor
- Large 50-litre collection bag
- Adjustable depth settings
- Quieter than petrol models
Cons
- Heavier than some corded alternatives
- Battery and charger sold separately
Who is the Greenworks Scarifier For?
The Greenworks scarifier is designed for homeowners with medium to large lawns who want a battery-powered solution for removing thatch, moss, and debris. It is ideal for those already invested in the Greenworks 40V battery ecosystem, as the battery is shared with other tools like mowers and trimmers. The machine suits users who prefer the convenience of cordless operation without the maintenance of a petrol engine.
Performance and Thatch Removal
Owner reviews consistently highlight the scarifier's ability to pull up significant amounts of thatch and moss in a single pass. The 41cm working width is generous for a cordless model, covering ground efficiently. The adjustable depth settings allow you to start gently and increase aggression as needed, which is useful for different lawn conditions. The brushless motor provides consistent power, though it can struggle slightly in very thick, wet thatch compared to a petrol scarifier.
Build Quality and Design
The Greenworks scarifier features a robust plastic housing with a steel handle. The 50-litre collection bag is large and easy to empty, though it can become heavy when full of wet moss. The wheels are sturdy and the machine feels well-balanced during use. The handle folds for storage, which is a practical feature for smaller sheds. Some owners note that the plastic parts feel durable but not premium, which is typical at this price point.
Battery Life and Charging
With a fully charged 4.0Ah 40V battery, users report around 30-40 minutes of continuous scarifying, which is enough for a 300-400 square metre lawn. The runtime decreases when using the deepest scarifying setting or when tackling heavy thatch. The battery takes approximately 90 minutes to charge. It is worth noting that the battery and charger are often sold separately, which adds to the initial cost if you are not already in the Greenworks system.
Alternatives to Consider
If the Greenworks 40V model is not suitable, consider the Flymo Contour Corded Scarifier for a lighter, cheaper option with a smaller footprint. For larger lawns, the Stihl RLA 240.0 cordless scarifier offers a similar battery-powered experience with a slightly higher build quality. The Bosch UniversalScarifier 1200 is a popular corded alternative with a 32cm working width and a lower price point.
What to Check Before Buying
Before purchasing a Greenworks scarifier, measure your lawn area to ensure the battery runtime will be sufficient. Check if you already own Greenworks 40V batteries, as this will save you the cost of buying a new one. Consider the type of grass and the thickness of thatch, as very dense thatch may require multiple passes or a more powerful petrol model. Also, verify the storage space available, as the scarifier is relatively large when assembled.
Mistakes to Avoid
A common mistake is using the deepest scarifying setting on a lawn that has not been scarified for years, which can damage the grass roots. Always start with a shallow depth and increase gradually. Another error is not emptying the collection bag frequently, as a full bag reduces airflow and performance. Finally, avoid using the scarifier on wet grass, as it can clog the tines and leave a messy finish.
FAQs
Can the Greenworks scarifier be used as a lawn rake?
Yes, it functions similarly to a powered lawn rake, using spring tines to pull out thatch and moss from the grass surface.
Does the Greenworks scarifier come with a battery and charger?
Often it is sold as a bare tool, meaning the battery and charger are sold separately. Check the product listing carefully before purchase.
How deep can the Greenworks scarifier go?
It offers five adjustable depth settings, allowing you to set the scarifying depth from a light rake to a deep cut of around 5mm.
Is the Greenworks scarifier suitable for large lawns?
It is best for medium to large lawns up to 400 square metres. For larger areas, consider a petrol model or a second battery.
Can I use the Greenworks scarifier on wet grass?
It is not recommended. Wet grass can clog the tines and collection bag, leading to poor performance and a messy result.
What is the warranty on the Greenworks scarifier?
Greenworks typically offers a 2-year warranty on the tool and a 2-year warranty on the battery, though this can vary by region.
How do I clean the scarifier after use?
Use a hose or a stiff brush to remove grass and thatch from the tines and collection bag. Avoid using a pressure washer on the motor area.
Is the Greenworks scarifier easy to store?
Yes, the handle folds down for compact storage, making it easier to fit in a shed or garage.
Can I use a different brand battery with the Greenworks scarifier?
No, the scarifier is designed specifically for Greenworks 40V batteries and will not work with other brands.
How often should I scarify my lawn?
Most lawns benefit from scarifying once a year in spring or autumn. Over-scarifying can damage the grass.
Our verdict
The Greenworks 40V Cordless Scarifier (G40LM41KS) is the best overall choice for homeowners with medium to large lawns, offering powerful thatch removal and a large collection box. For smaller lawns or those on a budget, the 24V model is a solid alternative, provided you are already in the Greenworks ecosystem.