It mainly depends on the gauge of chain you would like to run. Take a look at your owner’s manual, page 37. You can run a 10 and 12” bar with the 0.043” gauge, but only down to 12” with the 0.050” gauge and a 9 tooth sprocket. With the stock 7 tooth sprocket, you can run 10/12/14/16 inch bars. Just make sure you’re getting the appropriate chain (drive links) if you’re going to swap bars. And if you have an 8 tooth sprocket, you’re running 1/4” pitch and the appropriate bar lengths and chain dimensions are listed on page 37 as well. I use the motomix because i don’t run the saw every day and doing a 2 gallon mix myself would expire before i could use all of it. So i stick with the expensive ass motomix because it’s good for 2 years after opening and i don’t have to worry about unused 2 cycle gas. If you mix yourself, non-ethanol is ideal, at least 89 octane (or higher). Hit up youtube for some videos on proper storage of your saw while you’re at it. Hope this helps, let me know if i can help any further.

Sthil recommend 91 octane with Synthetic oil 2 cycle Sthil

i bought one, and assumed they'd give me a proper chain, but if you don't specify, they'll default to hot garbage with the chain.. womp womp, beater chains

Yes you can. Oregon makes a nice chain for it. I used this log in order to strain the saw for demonstration purposes. Cheers

@@thescenicroute4712 in the states it illegal to sell a chainsaw without a safety chain

The Stihl bar that came on it.

Hah what I ment was the number on it.