Damien,
Thanks for contacting Husqvarna to post your questions.
Once the chain gets thrown off the bar the chain very likely need to be replaced. You can check all the drive links but you may not be able to see a slight deflection, which will cause the chain to keep jumping off. I would start with a new chain and go from there, you may need to replace the bar as well. You can check the trueness of the bar by laying it on a known flat surface, preferably a metal top. Look for light under the bar on both sides. If there is any uneven spaces you would need to replace it as well. This generally happens when the bar gets bound up in the wood and trying to remove it can cause the bar to bend slightly.
Thanks again from the Husqvarna team.
Damien,
Thanks for contacting Husqvarna to post your questions.
Once the chain gets thrown off the bar the chain very likely need to be replaced. You can check all the drive links but you may not be able to see a slight deflection, which will cause the chain to keep jumping off. I would start with a new chain and go from there, you may need to replace the bar as well. You can check the trueness of the bar by laying it on a known flat surface, preferably a metal top. Look for light under the bar on both sides. If there is any uneven spaces you would need to replace it as well. This generally happens when the bar gets bound up in the wood and trying to remove it can cause the bar to bend slightly.
Thanks again from the Husqvarna team.