Customer reviews from greenworkstools.com
Greenworks - 21" (51 CM) Replacement Lawn Mower Blade - Black
Average customer rating
4.7 out of 5
4.7
(213 Reviews)
Open Ratings Snapshot
Rating breakdown 213 reviews
5 Stars
182
4 Stars
18
3 Stars
6
2 Stars
1
1 Star
6
95%of customers recommend this product. 
(
161 out of 169
)
Best Buy Privacy Policy
Customer Reviews for Greenworks - 21" (51 CM) Replacement Lawn Mower Blade - Black
Customer Rating
5 out of 5
5
What a difference a blade makes.
on July 21, 2021
Posted by: Geep
from Fairway, KS
Gender:Male
Verified Purchase:Yes
I did not realize what a difference the new blade would make. I had the old blade sharpened but this new one was so much better.
Written by a customer while visiting greenworkstools.com
Customer Rating
5 out of 5
5
21 inch mower/spare replacement blade
on July 21, 2021
Posted by: Thoml
Verified Purchase:Yes
Came very quickly, Always nice to have a spare! The lawn mower is AWESOME…..no more worry about getting the right fuel and no need to remember about checking the oil as well !!!!
Written by a customer while visiting greenworkstools.com
Customer Rating
1 out of 5
1
Great blade bad mower
on July 29, 2021
Posted by: Dustin R
from Indiana
Gender:Male
Verified Purchase:Yes
The blade is great the mower however is not suited for Midwest grasses like bluegrass or fescue I sometimes have to charge my mower up to 8x to cut my 4000 sq. ft. Yard. Will not buy again.
No, I would not recommend this to a friend.
Response from greenworkstools.comBy GreenworksGreenworks Customer CareJuly 29, 2021
Hello Dustin R,

We are sorry to hear that you were not completely satisfied with the performance this battery when used in this lawn mower. It is important to adjust your mowing techniques to make the most out of the battery life, here are a few mowing tips to help achieve the optimal run time.
1) When cutting thick grass, reduce walking speed in order to allow for a more effective cut and a proper discharge of the clippings.
2) Only mow 1/3 of the total grass length at a time - no more. For a healthy lawn, always cut off one-third or less of the total length of the grass. The average lawn should be approximately 1 1/2 to 2” (3.8 to 5 cm) long during cool months, and between 2" to 3 1/4" (5 cm to 8.3 cm) long during hot months.
3) Mow when the grass is dry. As this is an electric unit, mowing wet/damp grass is a safety issue. However, ensuring the grass is dry will also help the grass cut cleanly and discharge appropriately. Wet/damp grass carries more weight and will mostly stick to the blade/motor shaft and will not appropriately discharge or cut easily.
4) Make sure the battery is cool before use. When the battery will not be in use, we suggest storing it indoors, in a cool dry area - away from direct sunlight. Leave the charger unplugged and the battery disconnected from the charger unless it needs charging.
We hope these tips will help. We would be happy to carry on this conversation to offer some additional suggestions, if you are willing, please submit an email using the customer contact page on our website or give us a call at 1-888-909-6757 (1-888-90WORKS). All we ask that you have access to the unit so that we can complete troubleshooting with you and gather necessary unit information.
Written by a customer while visiting greenworkstools.com
Customer Rating
5 out of 5
5
New blades to renew performance.
on August 3, 2021
Posted by: Anonymous
from West Linn, OR
Gender:Male
Verified Purchase:Yes
Perfect replacement for bringing the performance of my mower back to factory new. I've been using my Greenworks mower for nearly three seasons now and it's been carefree and very reliable.
I would recommend this to a friend!
Written by a customer while visiting greenworkstools.com
Customer Rating
5 out of 5
5
Blade and customer assistance.
on August 5, 2021
Posted by: Jascha
Verified Purchase:Yes
Blade goes on easily and is “dummy” proof.
Works great.
Most important is the customer help in replacing the blade lost in the mail.
I would recommend this to a friend!
Written by a customer while visiting greenworkstools.com
Customer Rating
5 out of 5
5
Sharp, easy to install
on September 2, 2021
Posted by: Retired Actuary
from Massachusetts
Rather than sharpening my old blade, which was really dinged up, I bought a new one...they're so inexpensive and easy to swap out, and very sharp, that it was a no-brainer. Make sure you look at your actual blade before ordering, you'll find that it has the replacement part number right on it.
I would recommend this to a friend!
Written by a customer while visiting greenworkstools.com
Customer Rating
5 out of 5
5
Easy to install
on September 16, 2021
Posted by: katefee
I had put my old blade through the ringer and I had put off replacing it because it was such a tricky prospect with other brands. This one was easy and quick and now my mower is cutting like a dream
I would recommend this to a friend!
Written by a customer while visiting greenworkstools.com
Customer Rating
5 out of 5
5
Works like new
on September 25, 2021
Posted by: Anonymous
Verified Purchase:Yes
Damaged original blade did not cut evenly. This replacement blade has my mower working like new again.
Written by a customer while visiting greenworkstools.com
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