We had a Mantis garden tiller which worked well for a number of years but it finally wore out this spring, when we bought a new one. It worked well for the spring tilling then rested in the garage for the summer. I wanted to do some tilling recently and it got tempermental. I spent several hours working on it over the last few weekends but it just won't work.

The status is that it will start on full choke after several presses on the fuel injector bubble thing. I let it run for a few minutes to get up to operating temperature but it shuts off when the choke is opened. If I try to accellerate with the choke closed, it also dies.

I've tried adjusting the carb screws in every possible way, the plug and fuel filter are good, and the muffler screen is clear. I drained the gas tank and re-filled with a new 2-cycle mix of the proper ratio. Any ideas on what else to try before I give up and take it to the shop?

Paul