Originally Posted by Roger
This trimmer now sits in the shop, and I'm wondering if it should be repaired. The square shank on the drive line has worn out, and will no longer engage with the clutch plate. It is on my list to disassemble to see how many parts are required to put it back into service. It has been replaced.
If you're talking about the driveshaft, it carries a lifetime warranty from Stihl.