Blsnelling: thank you for this article. The larger carb works great! :msp_thumbsup:
The only thing is, the 260 couldn't get rpms pass 12,500 with the stock filter. The carb couldn't breathe. So I cut the fleece or whatever it's made of out and siliconed foam across.
That fixed the breathing issue and allowed rpms to go to 15,800 rpms.
Some porting has been done, and pop can for a base gasket with sealer.
At the very start, when everything was assembled, I had a factory working choke in the filter. It worked even with the larger hole ground in the body. The 260 started good, looked completely factory, but when it went to get tached and tuned, the rpms wouldn't climb pass 12,000. The choke was removed, and gained 500 rpms. Then filter assembly was removed, it went up to 17,100 rpms where it works good.
Then we gutted filter. The saw came down to 15,800 where it's been for the last year.
Once again, thanks for this article!