Spark Arrestor Stihl FS 40C
In this video a Stihl FS40C was running sluggish and without full power. We check the Spark Arrestor to see if back pressure is causing the problem. We removed the Spark arrestor screen and found it stopped up. Cleaned it with a wire brush and parts cleaner and reinstall and test. Runs good! Do it yourself and save! Total cost $0 free just a little wire brush action
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