Refill with fresh fuel. Engine is overfilled with oil Drain oil and fill to proper amount. Engine idles poorly Spark plug is fouled, faulty or gap is too wide Replace spark plug or reset gap to proper setting. Dirty air filter Clean or replace air filter.
Carburetor is adjusted improperly Adjust carburetor.
Trimmer line won't stay on Trimmer line is installed incorrectly. Incorrect trimmer line being used Check operator's manual for proper installation of trimmer line. Make sure correct trimmer line is being used. If you still didn't find an answer related to your problem, please use our support form .