I have a model TB230. It is difficult to start and quits almost as soon as it starts. I f I keep starting it, it will limp along, speeding up and dying and after about 4 minutes, it will rev and die. I have replaced the plug and the air filter and after draining the tank put some Stabil in the new fuel to clean out the lines, all to no avail. Do you have any advice? Al Jennings Booty01 i have a Model TB230 which is difficult to start and when it starts, it will not go fASTER