Choose Product
Identify Problem
03
Find Solutions

String trimmer runs rough

icons/string trimmer
Brand:Homelite
Model:ST145
Product:String Trimmer
Shop Parts
Common Problems
Diagrams & ManualsRelated Videos
Thumbnail for video "String Trimmer Runs Rough? String Trimmer Troubleshooting"
Featured Video

String Trimmer Runs Rough? String Trimmer Troubleshooting

02:25

Common solutions for: String trimmer runs rough

01 - Fuel Filter
The fuel filter might be clogged. A clogged fuel filter is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the fuel filter and cause the engine to run roughly. If old fuel was left in the string trimmer, drain the old fuel from the fuel tank and replace the fuel filter.
Common
02 - Spark Arrestor
The spark arrestor is a small screen that prevents the engine from emitting sparks. Over time, the spark arrestor can become clogged with soot. If the spark arrestor is clogged, the engine may run roughly. To unclog the spark arrestor, remove it and clean it with a wire brush. You may also replace the spark arrestor.
Less Common

Shop by Popular Homelite String Trimmer Models

Homelite (UT-20581-1) String Trimmer PartsHomelite 51978 String Trimmer PartsHomelite UT-20004-B String Trimmer PartsHomelite UT-20024-B String Trimmer PartsHomelite UT-20044-B String Trimmer PartsHomelite UT-20046 String Trimmer Parts
Homelite UT-20760 String Trimmer PartsHomelite UT-20769 String Trimmer PartsHomelite UT-20772 String Trimmer PartsHomelite UT-20811 String Trimmer PartsHomelite UT-21506 String Trimmer PartsHomelite UT-21546 String Trimmer Parts
Homelite UT15113-R String Trimmer PartsHomelite UT15114-R String Trimmer PartsHomelite UT20635R String Trimmer PartsHomelite UT20763 String Trimmer Parts
View more