Cleaning Stihl Spark Arrester


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Old 09-26-15, 07:22 AM
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Cleaning Stihl Spark Arrester

I removed the Spark Arrester from the Muffler to clean it as the engine slowed WAAAY down (a Cheese Suggestion) I both wire brushed it, and burned it with a spark lighter and propane torch. It is nice and shiny now, and the performance improved, but the blower still works a lot better without the arrester installed. My thought would be to make a restriction free outlet and move on, but sometimes engines are engineered to have some restrictions like that. Comments?
 
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Old 09-26-15, 07:30 AM
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Some engines need the back pressure. Apparently, yours doesn't, if it runs better without it.
 
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Old 09-26-15, 09:25 AM
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I don't know how often the spark arrester is actually needed but if there is ever a time you'd want to stop a spark it would be while you are blowing dry leaves ..... just something to think about
 
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Old 09-26-15, 02:50 PM
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When incinerators were used in NYC apartment buildings, spark arresters were put on the top of the stack. Today they call them chimney caps but they are basically the same thing. It's a good idea to look at the safety issues too.
 
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Old 09-26-15, 03:29 PM
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What is the Model number for the blower. Have a good one. Geo
 
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Old 09-26-15, 05:08 PM
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Don't worry about shiny just make sure that all the fine mesh is clean and air flow is gonna be good. Soak that sucker in carb cleaner for a few hours and blow compressed air to make sure it's clean !!
 
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Old 09-27-15, 06:37 AM
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Cleaning Spark Arrester

It is a BG86 Model I have done all of the above and I must have broken some of it loose running it yesterday with the arrester installed. It is running like new now. I might still take it back out and give it another shot of cleaner etc. Maybe it just needs dual exhausts.

Thanks for the comments!
 
 

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