Chainsaw Repair

Yes, I goofed up on that. Thanks.

Your time frame is correct too. A service bulletin was issued in May of 1988. the 830/930 were the last saws to use the 10mm studs so the change was made to bring them in line with the other models. At that time, they included an S clip so guys could use existing bars. A lot of saws though were outfitted by dealers with the old studs as that was a better way for guys to continue to use 10mm set ups.

This bulletin also the reinforced handle and change to a spring mount at the cylinder.