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My Homelite UT-20002A trimmer have a hard starting problem. I remove the muffler and cleaned the carbon in the exhaust port. I also replaced the spark plug, but still the trimmer is dificult to start.

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If you can, check to make sure there is a spark. Check the plug and notice if there is a presence of gas/oil mix on the plug or in the cylinder. Also, make sure the air filter is clean Try to make sure all bolts and screws are tight as lots of vibrations can loosen some of them.. An air leak on the engine could be causing your problems. A carburetor that is in need of a rebuild will do the same.. Finally an engine that is badly worn and has weak compression will not start, period.

Posted on Nov 18, 2009

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Remove the Torx screws holding the rear cover on. Then remove the larger Torx screws holding the muffler on to the exhaust port of the cylinder. There will be a gasket there. The spark arrestor will be mounted in the opening to the muffler. You can scrape or burn the carbon off of it. If the spark arrestor is real clogged up, then the muffler probably is too. It should also be cleaned. The inside of the engine probably is carboned up too( if arrestor and muffler are). They all should be cleaned of carbon. It helps the engine perform at its' best and breathe like it needs to.

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there is a little screen in the muffler these get stopped up some time remove it start engine if this works just clean it and replace it back ..

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Hello:

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Good Luck

Respectfully

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