While you wait for answers, we may have found some information which could help you.
Click here for Trimmer Grass Head
Primer Bulb for Troy-Bilt TB475SS?
fuel lines replacement for Z825sd weed eater?
how do i replace the gas line in side the tank?
Change trimmer head on Troy Bilt TB465SS?
how do i replace starter rope on Troy Bilt TB20CS gas trimmer?
Troy Bilt TB20 CS trimmer stops?