Chainsaw spline sizes

There are a few things about chainsaws that we’re learning as Scott is working on both this cheap knock-off chainsaw we got from Amazon and an old (very solid) chainsaw his dad brought over. Today’s lesson was spline size — there’s mini, small, and standard. But what’s small mean?

Mini spline – 17mm
Small spline – 19mm
Standard spline – 22mm

Turns out we weren’t wrong — we’d ordered a small spline rim sprocket, and it didn’t fit on our chainsaw because they sent us a standard spline sprocket — 22mm ID instead of 19mm ID. But now I know why we ordered exactly what we needed.

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