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Stihl leaf blower |
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Hubert (Ga)engine7
Orange Level Joined: 12 Sep 2009 Location: Jackson Cnty,GA Points: 6136 |
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Posted: 28 Jan 2019 at 8:49pm |
Just posting this in case someone else has had a similar problem. Saturday my neighbor asked me if I could adjust the carb on his fairly new Stihl BG86 leaf blower, said it would only run half throttle. Checked it out today and the spark arrestor in the muffler was completely clogged with carbon. Heated it red hot with the propane torch and blew it out, reassembled and it ran great. Now who needs a spark arrestor on a leaf blower? Must be a California thing.
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Just an old country boy saved by the grace of God.
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Brad in WA
Bronze Level Access Joined: 29 Sep 2009 Location: Lynden,WA Points: 193 |
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I had the same thing on my Stihl blower, stupid government regulations.......
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TimNearFortWorth
Orange Level Joined: 12 Dec 2009 Points: 2014 |
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Picked up a used one after hearing about that with the newer units.Went into the local pawn shop looking for my usual yearly stash build-up of 1/2" and 9/16" wrenches and sockets and came home with one for 40.00. Sure makes cleaning the shop easier, and home garage, and gutters, and driveway, and cattle feed troughs, and equipment like brush cutters and seeders.
Stihl has always made some good products.
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Amos
Orange Level Joined: 11 Sep 2009 Location: Ontario Points: 1306 |
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VERY common, weed wackers get the same issue here...and when a wasp builds a nest in there while they hang in the garage they don't even run sometimes
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ACinSC
Orange Level Joined: 16 Dec 2015 Location: South Carolina Points: 2577 |
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My Stihl blower wasn't running very well a while back . My neighbor asked if I had checked the muffler . Didn't think that was the problem , but I did check it . Sure enough the "screen" was plugged up . Cleaned it up with a wire brush and it's still running good . Good tip
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Clay
Orange Level Joined: 11 Sep 2009 Location: Udall, Kansas Points: 8834 |
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A hacksaw will remove the problem. Cut the screen off.
We use our Stihl leaf blower when burning pastures. Save many gallons of valuable fire fighting water by blowing fire back into itself, during a backfire (back burn to those of you in Rio Linda. LOL).
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john(MI)
Orange Level Joined: 12 Sep 2009 Location: SE MI Points: 9263 |
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I bought a new Stihl chainsaw years ago. After a year it started running rough if at all. I asked the guy at the parts counter about it and he said to open up the muffler, take out the spark arrester and throw it away. Don't they come out of them blowers? I still ain't seen any sparks coming outta that muffler!
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D14, D17, 5020, 612H, CASE 446
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ACinSC
Orange Level Joined: 16 Dec 2015 Location: South Carolina Points: 2577 |
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Can't remember if the screen comes out . Seems it wasn't too much trouble to clean . I may need to check it again
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Hubert (Ga)engine7
Orange Level Joined: 12 Sep 2009 Location: Jackson Cnty,GA Points: 6136 |
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The screen screws out of the muffler. Will need a deep socket or a scrunch.
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Just an old country boy saved by the grace of God.
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ACinSC
Orange Level Joined: 16 Dec 2015 Location: South Carolina Points: 2577 |
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Ok , Thanks .
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Ted J
Orange Level Joined: 05 Jul 2010 Location: La Crosse, WI Points: 18727 |
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Now there's a new one Hubert,,,,,,what's a scrunch??
NOW I know what's wrong with my Weedeater weed wacker!! I'll have to look come this spring! THANKS!! |
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
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Hubert (Ga)engine7
Orange Level Joined: 12 Sep 2009 Location: Jackson Cnty,GA Points: 6136 |
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Ted, scrench is the term for the screwdriver/wrench combo tool that comes with Stihl power equipment.
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Just an old country boy saved by the grace of God.
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Dave H
Orange Level Joined: 11 Sep 2009 Location: Central IL Points: 3484 |
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Dang i thought it was a scrench.
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ac fleet
Orange Level Joined: 12 Jan 2014 Location: Arrowsmith, ILL Points: 2215 |
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Around here they drill holes in the mufflers on chainsaws big time, especially Stihl's ! must be the same problem as blowers/weed eaters! I just keep mine clean and they work fine! thanks; ac fleet
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http://machinebuildersnetwork.com/
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5642 |
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There's several issues that are commonplace in 2-stroke power tools of the last decade or so... the arrestor screens are one... noise regulations are another, improper mixture due to oil and fuel emmissions are a third. If you want a two-stroke to run right, dismantle the housing, and either break off the mixture adjustment limiters, or replace the carbeurator with an 'open adjustable' type. Next, remove the muffler, yank the arrestor screen, and open up the muffler passageways (web search will tell you what works best). Last one, is advancing the timing a few degrees. Each of these modifications reverse 'compensation' that manufacturers apply to their products to meet 'standards'. The mixture adjustment screws prevent you from setting the mixture to proper enrichenment to develop torque with 'limited' oil mixtures... it effectively protects the engine from insufficient lubrication. The THEORY is that the 'arrestor' screen heats up, and 'captures' oil soot, and it's SUPPOSED TO (if the mixture is lean enough) get hot enough to 'break down' the lubricating oil before it leaves the exhaust can. The finer ports produce enough restriction to 'capture' exhaust heat to make that 'arrestor' screen catch the oil and keep it burning... so that the soot emmissions are 'low'. They retard the timing to help build that heat a bit more. Do all three, run 'em on high quality oil, NO ETHANOL high-test gasoline, and keep 'em clean, and they'll run great forever, with just a regular replacement of air filter, plug, and fuel pickup and hoses.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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DaveKamp
Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 5642 |
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Oh... and keep in mind that on little nitromethane/castor oil model aircraft engines, that a popular method of 'throttling', was simply to restrict the exhaust. Aside from fitting a tuned expansion chamber (and porting!), the biggest improvement will occur by reducing exhaust restriction. Yep, they're loud, but they sure work well.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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