shaft stops turning

[Sharon Carpenter]

I have a wonderful, easy to start and run 10 yr Ryobi weed cutter. The shaft stops turning without hitting anything and the motor keeps running which locates the problem (I think)in the shaft area. Is there a rod or something that wears out inside the shaft?

Widowed senior

[Robert Heard]

I don't know if this is your trimmers problem but, my trimmer is doing the same thing. I removed the string assy. and the housing (16)which has a hexagon shape to fit item (10) the string-head adapter, it was worn causing it to slip when it got under pressure from trying to cut grass. If you look on the following diagram you will see the parts I;m talking about. Ryobi RY29550 Page B
Items B10 and B16 and I would also get item B19
Don't forget, when you go to remove item-10 it's left handed threads.
Good luck