The Ryobi RCS3845 takes the Ryobi 18" Titanium Chainsaw Chain RCHT18 (62 drive links) as its chain. Fitment confirmed against the manufacturer's compatibility list.
Your chainsaw
Ryobi RCS3845
Chainsaw
Confirmed against Ryobi's listConfirmed against Ryobi's own compatibility list
Not yours? Change
Takes the RCHT18 chain
18" Titanium Chainsaw Chain RCHT18 (62 drive links) · check the code on your old part before ordering.
Ryobi names RCHT18 (18" bar, 62 drive links) for the RCS3845.
Your chainsaw
Chainsaw
Confirmed against Ryobi's listConfirmed against Ryobi's own compatibility list

Takes the RCHT18
Chain · check the code on your old part.
Ryobi names RCHT18 (18" bar, 62 drive links) for the RCS3845.
Other Ryobi chainsaws that take the RCHT18
GenuineGenuine Ryobi
See seller
Bunnings · 28 OctBunnings · checked 28 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Ryobi. Compatible: another brand.Genuine is made by Ryobi. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Compare 2 sellers
AUD, before delivery. Each price shows when it was checked.
How long it lasts
Replace it when it cuts noticeably worse, Ryobi says.
After replacing: No reset needed. Check the chain tension often while a new chain beds in.
How to change the chain in your Ryobi RCS3845
Watch the guide or follow the steps.
- 1Stop the engine and wait for the chain to stop (on a battery saw, remove the battery pack), then put on heavy-duty gloves.
- 2Loosen the chain tension: on tool-free models turn the chain tensioner knob anticlockwise to unlock the adjustment ring, then turn the ring anticlockwise.
- 3Loosen and remove the sprocket cover, then take off the bar and old chain.
- 4Fit the new chain in the bar groove with a loop at the back of the bar and the cutters facing the direction of rotation (turn the loop over if they face backwards).
- 5Place the loop around the drive sprocket, lower the bar onto the bolt and refit the sprocket cover.
- 6Tension the chain (Ryobi gives a 4–5.5 mm gap between the drive teeth and the bar on the 12" saw), then lock the tensioner knob.
Every number this part goes by
- Retail name:
- RCHT18
Sellers list any of these; they are the same part.
About your Ryobi RCS3845
Ryobi chainsaw — Petrol. Its chain is the 18" Titanium Chainsaw Chain RCHT18 (62 drive links), part RCHT18.
Where the model number is: The model is on the rating plate on the saw's housing (STIHL MS 170, Husqvarna 135 Mark II, Ryobi OCS1830BL). The chain's code is stamped on the drive links or printed on its box, and the bar length is on the bar.
Fits these 2 Ryobi models
Common questions
- Which chain fits the Ryobi RCS3845?
- The Ryobi RCS3845 takes the Ryobi 18" Titanium Chainsaw Chain RCHT18 (62 drive links). Ryobi names RCHT18 (18" bar, 62 drive links) for the RCS3845.
- Where can I buy the RCHT18 in Australia?
- We link to 2 Australian sellers for the RCHT18; the seller's page shows the current price.
- How do I fit the RCHT18 in a Ryobi RCS3845?
- 6 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A blunt or stretched chain cuts slowly, throws dust instead of chips, and makes the saw harder to control.
- Is there anything to reset afterwards?
- No reset needed. Check the chain tension often while a new chain beds in.
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