Get a 346 brace on there so it doesn't vibrate loose and burn a hole in the tank. It's probably got plenty of opening for a work saw. Play it could go bigger.
The chain on the 261 I posted was filed for a 446 hybrid and was a bit much for this one. I rechained and its much happier.
New little toy 41 Husky 14" .325 that ran terrible! I did a quick muffler job and carb tune now it's a fun little saw. Cutting some small ash pole cookies