FitMatch
GARDENA robotic lawnmower blade kit 4087-20 (9 blades and screws)

Robot mower blade

GARDENA robotic lawnmower blade kit 4087-20 (9 blades and screws)

4087-20

Fits 1 model

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Genuine

$2.56 each

9-pack $23.00

Harvey Norman · 27 Oct

Compatible

See seller

No compatible seller tracked yet

Genuine: made by GARDENA. Compatible: another brand.

Lowest price · $2.56 each · 9-pack $23.00

Harvey Norman. Every seller we track is listed below. Some links earn us a commission.

Open Harvey Norman

Compare 3 sellers

AUD, before delivery. Each price shows when it was checked.

Harvey NormanGenuine · checked 27 Oct$2.56 each9-pack $23.00Open
Amazon AUGenuine · checked 27 Oct$3.46 each9-pack $31.15Open
eBay AUGenuine · checked 27 Oct$5.61 each9-pack $50.48Open
Open cheapest seller · $2.56 each · 9-pack $23.00

Opens Harvey Norman in a new tab. Their page is the source of truth for price, delivery and returns.

How long it lasts

Replace it every 4 to 7 weeks, GARDENA says; check them weekly while the mower is new, and replace all 3 blades and screws together.

After replacing: No reset needed. GARDENA says to replace the screws every time you replace the blades.

How to change the 4087-20 robot mower blade

Watch the guide or follow the steps.

12 GARDENA Robotic Lawnmower Maintenance · GardenaNewZealand (official)
  1. 1Push STOP, then hold ON/OFF for 3 seconds until the LED on the keypad goes off. Wear protective gloves.
  2. 2Turn the mower over onto a soft, clean surface so the blade disc faces up.
  3. 3Undo the 3 screws with a screwdriver and remove the 3 blades.
  4. 4Fit new GARDENA blades with the new screws from the kit. Replace all three together; used screws can wear and let a blade come loose.
  5. 5Check that the blades pivot freely.
Every number this part goes by
Retail name:
4087-20
Retail name:
966809501
Retail name:
G4087-20

Sellers list any of these; they are the same part.

Will it fit your appliance?

Type your model number and we'll check it against the makers' lists.

Fits this GARDENA model

GARDENA1 model

Takes 3 blades and 3 screws; replace all three at once.

Common questions
What does the 4087-20 fit?
The GARDENA robotic lawnmower blade kit 4087-20 (9 blades and screws) fits the GARDENA SILENO minimo 250.
Where can I buy the 4087-20 in Australia?
We track 3 Australian sellers for the 4087-20; the lowest listed price when we last checked was A$2.56 at Harvey Norman. Prices are re-checked daily and dated on this page.
How do I fit the 4087-20?
5 steps, listed on this page with the replacement video where the maker has one.
What happens if I don't change it?
Blunt blades tear the grass tips, which then brown, and the mower works harder on every run.
Is there anything to reset afterwards?
No reset needed. GARDENA says to replace the screws every time you replace the blades.

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