The Sanli RCS405 takes the Sanli Tomahawk bar blade KSP-CB3 as its blade; Australian sellers list it from A$32.25 as of 31 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your lawn mower
Sanli RCS405
Lawn mower
Confirmed against Sanli's listConfirmed against Sanli's own compatibility list
Not yours? Change
Takes the KSP-CB3 blade
Tomahawk bar blade KSP-CB3 · check the code on your old part before ordering.
Takes one Tomahawk bar blade: KSP-CB3.
Your lawn mower
Lawn mower
Confirmed against Sanli's listConfirmed against Sanli's own compatibility list
Takes the KSP-CB3
Blade · check the code on your old part.
Takes one Tomahawk bar blade: KSP-CB3.
Other Sanli lawn mowers that take the KSP-CB3
GenuineGenuine Sanli
$32.25
Power Mowers · 31 OctLowest genuine · Power Mowers · checked 31 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Sanli. Compatible: another brand.Genuine is made by Sanli. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $32.25
Power Mowers. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
This lawn mower also takes a spark plug
- NGK BPR6ES spark plugOpen Power Mowers$6.87
Sanli recommends NGK BPR6ES or Torch F6RTC for its mowers, with a gap of about 0.7 mm, and says to check it every 25 hours. No manual for this older model was found, so this is Sanli's advice for its range. Separate from the blade. Replace every 12 months.
Compare 4 sellers
Compare 2 sellers
AUD, before delivery. Each price shows when it was checked.
Opens Power Mowers in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it as soon as possible when it is damaged, worn or bent, Sanli says; check the blade and its bolts before and after each mow, and have it sharpened and balanced at least once a year by a service agent.
After replacing: No reset needed.
How to change the blade in your Sanli RCS405
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Stop the engine and disconnect the spark plug cap. Wear protective gloves when you handle the blades.
- 2Tilt the mower on its side with the air filter and carburettor side up.
- 3Hold the blade firmly in one hand and loosen the blade screw with a spanner or socket.
- 4Check that all the parts (blades, key, blade holder, screws and washers) are there, clean and in good condition, and fit the new blades with the cooling fins facing the engine.
- 5Tighten the screws, check that everything is in place and lined up, then tighten the fixing bolt very firmly while holding the blade.
Every number this part goes by
- Retail name:
- KSP-CB3
- Retail name:
- KSPCB3
Sellers list any of these; they are the same part.
About your Sanli RCS405
Sanli lawn mower — Red Back (June 2020 and before). Its blade is the Tomahawk bar blade KSP-CB3, part KSP-CB3.
Also in this lawn mower: NGK BPR6ES spark plug (every 12 months). Sanli recommends NGK BPR6ES or Torch F6RTC for its mowers, with a gap of about 0.7 mm, and says to check it every 25 hours. No manual for this older model was found, so this is Sanli's advice for its range.
Where the model number is: The model is on the label on the mower's deck or handle. Disconnect the spark plug lead, or take the battery or safety key out, before you tip the mower: the blade is sharp.
Fits these 2 Sanli models
Common questions
- Which blade fits the Sanli RCS405?
- The Sanli RCS405 takes the Sanli Tomahawk bar blade KSP-CB3. Takes one Tomahawk bar blade: KSP-CB3.
- Where can I buy the KSP-CB3 in Australia?
- We track 2 Australian sellers for the KSP-CB3; the lowest listed price when we last checked was A$32.25 at Power Mowers. Prices are re-checked daily and dated on this page.
- How do I fit the KSP-CB3 in a Sanli RCS405?
- 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A blunt blade tears the grass tips, which then brown, and a bent blade makes the mower vibrate and wears the engine or motor.
- Is there anything to reset afterwards?
- No reset needed.
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