those can usually be cleaned and returned to service with no replacement of parts. Pop the clip on the bottom of the carb, and the plastic bowl will come loose. once you get it loose, spray it out real good, and remove the screw on the side of the bowl. The jet is behind the screw, and you can easily pull the jet out, and clean it. Re assemble the carb, and itll run again. Ive cleaned several plastic bowl tecumseh carbs without removing the metal body from the intake.