My Troy Bilt TB20CS trimmer will run about 10 minutes or until it starts getting hot, then will not accelerate. Will still idle OK. When I pull the throttle it will slow down or stop. Have cleaned spark arrestor, air filter plug and added new fuel mixture Thanks
I had a similar situation and this is what I did. I changed the spark plug and removed the air filter. Worked back again like a charm. Put back the filter and started having chocking problems. I certain that after 2 years I needed to change the spark plug and change or clean the air filter.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix grass trimmers.