Stihl FS80AVE w/TK carb won't run


Old 01-09-09, 02:21 PM
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Stihl FS80AVE w/TK carb won't run

I have an old stihl FS80 with a TK carburetor. My problem is that of hte two gas mixture screws, the smaller of the two is 0 turns out and the big (bottom) screw is 1/8 turn.
It stays running pretty fast. If i get it to idle like other trimmers it dies.
I got it used and it didn't run. replace all gaskets and this is what I get. Any ideas would be appreciated.

Last edited by Airman; 01-09-09 at 03:15 PM. Reason: Moved post to new thread
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Old 01-09-09, 08:06 PM
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The smaller screw on this slide valve TK carburetor is an air bleed. It will normally be closed. If there is any wear on the jet and needle causing a rich idle condition, then you can open it up a little to lean out the idle mixture.

Have you taken the carburetor apart and inspected for dirt, build up and or stiff and or damaged diaphragms??

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