I filled the 45 up with gas from a container marked with 2 stoke on it, and i think it was just normal gas. ran the chainsaw for a bit and it stopped. Had it in the local repair place with the muffler off and you an see a vertical line or two in the side of the piston as you rotate it by hand. Guy said it's stuffed. It moves freely it seems and seems to have compression.
What are my options? New piston? New piston and cylinder? Is that all i need or should other bits be replaced too? If I'm replacing the piston and cylinder is there anything I can do like put a larger piston in it? How easy is it to do yourself or do I need special tools?
Thanks in advance.