The Forestry Forum

Both my Husky 562 and Jonsy 2171  run .058 chains and bars. 
I have some .050 chains and bars from an old Jonsy 2255. 
Is it just a matter of switching the drive sprocket to .050 to use them or is there more involved?

Sprocket is the same, you will need a 50 gauge bar.

Yep, you'd have to get bars to match.

That's right. The 2255 bar has a smaller tail pattern (Oregon K095) which won't fit.

Ok , that does make it a non starter. 
Is there an adapter made to change it or does the bar need to be modified or ????

Gonna need to get yourself a large mount bar. How many chains you have will determine if it's worth it or not.

Is that .325 pitch on the small mount bar?

Quote from: barbender on March 21, 2023, 03:16:02 PMNo, it's 3/8

Is that .325 pitch on the small mount bar?