My 661 with a 36" .063 3/8" tsumura bar, with the oil pin punched in, and screw turned to max, will empty a tank of oil per tank of gas. tsumura bars have a larger oil hole then the OEM Stihl bar.
I have no complaints with the oiler keeping up. I cut a lot of dry hardwood.
I have no complaints with the oiler keeping up. I cut a lot of dry hardwood.