17cc is enough to trim a well cut lawn but anything above that would be suspect. I am guessing it was a TD or TG18.
The stihl FS51 is apparently 16cc which should be interesting
Tried the Tanaka again today. I don't even bother moving that main jet blocker knob - leave it in the run position. Prime until all the air bubbles are out of the line (13 times today), full choke 1/4 throttle and it fired up and ran first pull (which is good for any brushcutter let alone a 40 year old one). Push the throttle back to idle and
