In addition, I’m currently looking at a Oregon 28" .058 Gauge Bar and Full Chisel Chain for Husqvarna, 288RNDD009 / 73EXL092G
The new chain and the new bar are compatible obviously because the seller are selling both as a combo! Says it fits Husqvarna but that again brings up the question how compatible is Husqvarna made products with Jonsereds?
Someone messaged me saying Husqvarna and Jonsereds are the same. Just how true is that statement?
Someone messaged me saying Husqvarna and Jonsereds are the same. Just how true is that statement?
In some (especially latter instances) very true- in others (like the vintage of your 820) very untrue.
You do not need to worry as much about compatibility, or one being the same as the other- more about bar tail mounts and stud sizes.
D024 is a mount for 10mm studs as used on some of the bigger older Jonsereds, some Oleo Mac's and some Olympyk saws.
D009 is for 9mm studs that were what Jonsered moved to once they dropped the D024 mount and studs.
As mentioned above- some D009 bars are very close to 10mm in the slot milling- some from new, some from wear.
Also mentioned above- measure your bar studs and see which you have- could be your old 10mm studs have been replaced with newer 9mm ones and allow a D009 to bolt straight up to the saw.