I have a TB110 Lawn mower that is in use for it's 2nd summer. I am experiencing a few issues. The engine sputters from strong to weak while I am cutting grass. If I push to fast while mowing the grass the engine will stop. When I pull the choke it will not start right away. It takes a few times. What I have done so far: I replaced the air filter. I replaced the spark plug. I took apart the carburetor and sprayed cleaner inside and wiped it back down. I cleaned the undercarriage with a broom. What else can I do? I have not changed the oil, and using gas that is about 6 months old but I put the stabil inside of the gas. Any ideas?

Hi guys My current problem is with a Craftsman trimmer. It starts & will idle, but has little power. model #316.711370 I would Appreciate your thoughts about the possibilities. Thanks