TB80EC Troy-Bilt Trimmer - Instructions

emptied fuel from tank. pulled off the 2 fuel lines from the carburetor.opened the air cleaner door. removed the 2 torque screws that hold on the carburetor. removed the carburetor and air cleaner gasket. installed new carburetor and gasket and put back and tightened the 2 torque screws. closed air cleaner door and pushed the fuel lines onto the new carburetor.put some fuel in the tank. started the trimmer. runs great.

Removed 2 screws securing the air cleaner and carburetor to the engine using a T25 Torx driver. then removed the throttle cable from the carb.Then removed the o ring gasket from the engine and replaced with a new one and replaced the carb etc. Primed it and fired it up.Runs just like new.

I ordered the gear assembley and the boom assembley and I stalled them.

Air filter has a tab to open cover just press the tab to remove take old filter out and replace it with new one then reinstall the cover and you're done.

The replacement of the carburetor, O-ring, and gasket was simple. I removed 2 screws that held the air cleaner and carburetor in place, swapped them out, and replaced the screws. What took longest was finding a piece of fuel line after breaking one of them. It was brittle after hanging in my garage for several years. I found some in my garage and replaced it. It took a few pulls to get it started, but ran very smooth.

Additional information: rather than mixing my fuel, I purchased 40:1 pre-mix fuel to prevent gunking up the carburetor in the future. I use it in my other trimmer and have not had any issues.

remove two screws holding old air cleaner housing to carburetor and manifold. The carburetor will come off but don't worry as long as gasket does not tear. line up new housing, put the 2 new screws in and tighten. put new filter in and the new cover on and done