Your 40V Ryobi chainsaw bogs down halfway through a fallen limb. The chain smells like burnt dust instead of clean chips. You search for a ryobi chainsaw sharpener expecting a dedicated grinder like the ones other chain brands sell.
What comes up instead is a small bag of rotary stones for around twelve dollars. That is not a mistake on your end. Ryobi has never sold a standalone chainsaw sharpener.
This page covers what Ryobi actually sells for sharpening, what file size fits your chain, and which kit gets a dull Ryobi chain cutting again.
Does a Ryobi Chainsaw Sharpener Exist?
The short answer: there is no true Ryobi chainsaw sharpener sold today. No bench grinder, no bar mounted unit, nothing that stands on its own.
What Ryobi sells in the US is a handful of accessory kits. The Sharpening Rotary Kit, model A90SG2A4, runs around twelve dollars and is built to work with standard rotary tools. It ships with a guide set to 30 and 60 degree positions.
The 3 PC. Assorted Sharpening Kit, model A90GS02, runs around six dollars. It is three rotary stones in 5/32, 3/16, and 7/32 inch sizes with no guide included.
There is also a Chainsaw Tune-Up Kit, model AC0538CSK, around twenty four dollars. Ryobi’s own page does not list what parts are inside.
In the UK, Ryobi lists a Chainsaw Sharpening Kit RAR502-3 as a rotary accessory. Its exact contents were not confirmed here.
Some retailer listings describe a bar mounted file kit sold under the Ryobi name. We could not confirm that product on any current Ryobi product page in either market.
What Chain Is Actually on Your Ryobi
Ryobi’s own chain pages state a .043 gauge but leave the pitch off the listing. That gap is why owners end up guessing.
Aftermarket listings for 40V models like the RY40502 and RY40503 report 3/8 low profile pitch. They list 52 drive links on a 14 inch bar. A European owner community traced Ryobi’s RAC221 chains back to Oregon’s own 91 series chains sold under the Ryobi label.
That Oregon lineage points to a 5/32 inch, or 4 millimeter, file for the common low profile chains. Larger gas Ryobi saws may need a 3/16 or 7/32 inch file instead.
One owner in a European community said Ryobi’s own service line could not tell him the file size. He solved it himself, reading the stamp on a drive link and looking up the Oregon equivalent.
Picking the Right File or Rotary Kit
Neither Ryobi kit is a full Ryobi chainsaw sharpener the way a bench grinder is.
What matters here is matching file diameter to your actual pitch. Keep the filing angle consistent. Be honest about whether you already own a rotary tool.
| Kit | Type | Best for | Price band | |
|---|---|---|---|---|
| Ryobi A90SG2A4 | Rotary stones plus guide | Ryobi rotary tool owners | Under $15 | |
| Ryobi A90GS02 | Rotary stones only | Cheapest stone swap | Under $10 | |
| Oregon File Kit | Hand files, 3 sizes | No rotary tool on hand | $ | |
| Dremel A679-02 | Rotary attachment kit | Existing rotary tool owners | $$ | Price |
Oregon File Kit, 5/32, 3/16, 7/32
Best for No Rotary Tool
Round hand files | three common Ryobi diameters | no batteries needed
Ryobi’s 40V chains are commonly 3/8 low profile. The Oregon lineage behind Ryobi’s own replacement chains points to a 5/32 inch file for that size. This kit adds 3/16 and 7/32 inch files for larger gas Ryobi saws.
It suits anyone who wants a cheap, reliable way in without buying a power tool first. Skip it if you already own a rotary tool and want speed over hand control.
Pros
- Covers three common Ryobi chain diameters
- No rotary tool required
- Low cost way to start sharpening at home
Cons
- Hand filing takes practice to stay consistent
- Owner reports on this specific kit were not verified this round
Dremel A679-02 Chainsaw Attachment Kit
Best for Rotary Tool Owners
Attaches to a standard rotary tool | guided sharpening angle | Ryobi’s own alternative approach
Ryobi’s own rotary kit is built to work with standard rotary tools, which means a Dremel does the same job. The A679-02 adds a guide instead of freehanding the stone by eye.
This suits owners who already have a Dremel style tool sitting in the shop. Skip it if you do not own a compatible rotary tool. The tool cost adds up fast on top of the kit.
Pros
- Works with the same tool style Ryobi assumes you own
- Angle guide cuts down on freehand guesswork
Cons
- Exact stone sizes in the kit were not confirmed this round
- Still requires owning a rotary tool to run it
If cordless convenience matters more than fine hand control, a portable option worth considering covers that middle ground. For the full rotary method start to finish, our dedicated page on the Dremel method walks through it.
Our guide to file sizes and pitch goes deeper than this page can. It covers the complete breakdown across chain brands.
The Angle Question: 25 to 35, or 30 and 60 Degrees
Ryobi’s own UK guide calls for filing each tooth at 25 to 35 degrees. The US rotary kit guide only offers 30 and 60 degree positions, which is a different setup entirely.
One owner reported that a Ryobi service rep quoted 45 degrees for the same chain. Oregon guidance in that same discussion said 35 degrees instead.
Treat 25 to 35 degrees as the working range for most Ryobi chains. Note the 45 degree answer as an outlier worth double checking against the angle already cut into your own chain.
Sharpen or Replace: Ryobi’s Own Rule
Ryobi’s official guide sets clear replacement triggers. Replace the chain if teeth are worn unevenly or severely.
Replace it if cutters or drive links show cracks. Replace it if it no longer holds tension, or after it hits rock or nails.
Outside of those cases, sharpen after every few hours of active cutting or whenever cutting performance drops. The full hand filing steps, including stroke count and file pressure, are covered on our complete filing page.
Mistakes to Skip
Guessing your file diameter instead of checking the stamp on a drive link wastes a purchase. Ignoring the depth gauges matters just as much as the round file work on the cutters.
Do not assume every Ryobi chain shares one pitch across every saw size. Do not buy a rotary sharpening kit before confirming you actually own a compatible rotary tool.
The bottom line: No dedicated Ryobi chainsaw sharpener exists. Match the kit to your shop, not the badge on the box. Without a rotary tool, the Oregon file kit sized to your chain is the cheaper, steadier start.
Already run a Dremel style tool? The A679-02 attachment saves you from freehanding the angle.
For a broader look before you decide, see how other powered sharpener types compare on our main page. You can also browse the full sharpening lineup for more gear picks.
Is there a Ryobi chainsaw sharpener sold today?
No. Ryobi sells rotary accessory kits and a tune up kit under its own name. It has never sold a standalone bench or bar mounted sharpener.
What file size fits a Ryobi chainsaw chain?
Most 3/8 low profile Ryobi chains pair with a 5/32 inch file. Larger gas models may need 3/16 or 7/32 inch instead, so check your drive link stamp first.
What angle should I use to file a Ryobi chain?
Ryobi’s official guide says 25 to 35 degrees. Its US rotary kit guide only offers 30 and 60 degree positions. Pick whichever matches your tool and stay consistent.
Can I use any rotary tool with Ryobi’s sharpening kit?
Ryobi describes its kit as compatible with standard rotary tools. That includes tools outside the Ryobi lineup, such as a Dremel.
When should I replace a Ryobi chain instead of sharpening it?
Replace it if teeth are worn unevenly or severely. Replace it if cutters or drive links are cracked. Replace it if the chain will not hold tension, or after it hits rock or nails.
What pitch are Ryobi chainsaw chains?
Ryobi does not publish pitch on its own chain pages. Aftermarket listings and owner reports point to 3/8 low profile on 40V models with a .043 gauge.
Sources
- Ryobi Tools: Sharpening Rotary Kit A90SG2A4, product page. https://www.ryobitools.com/products/33287212361
- Ryobi Tools: 3 PC. Assorted Sharpening Kit A90GS02, product page. https://www.ryobitools.com/products/33287207350
- Ryobi Tools: Chainsaw Tune-Up Kit AC0538CSK, product page. https://www.ryobitools.com/products/46396020741
- Ryobi Tools: 10 inch Replacement Chain RY10C1, product page. https://www.ryobitools.com/products/details/46396038722
- Ryobi UK: How to Sharpen Chainsaw Blades and Chains, official guide. https://uk.ryobitools.eu/get-inspired/how-to-sharpen-your-chainsaw-a-step-by-step-guide/
- Ryobi UK: Chainsaw Sharpening Kit RAR502-3, product listing. https://uk.ryobitools.eu/tool-accessories/rotary-accessories/grinding-sharpening/rar502-3/rar502-3/