Small Engines (Lawn Mowers, etc.): Poulan gas trimmer, gas trimmer, poulan

Question
I have a Poulan TE 450 gas trimmer that won't start.  Used it earlier this season.  Stopped it to replace line.  Hasn't started since.  Replaced spark plug.  No change.  Haven't gotten into fuel system yet.  Any ideas?

Answer
 Hello Steve:

 If the Spark Plug is Firing. 1- Is there Air coming Out of the Exhaust when trying to Start the Trimmer. 2- If Not then Remove the Muffler and Check the Exhaust Port for Blockage. 3- Then you need to Replace the Fuel Filter. 4- If this Doesnt work then Clean and Rebuild the Carb. Hopes this Helps.

 Good Luck

 Respectfully

 John