Question about Stihl 36, 40, 44 Edger Trimmer 35mm Piston Ring 4130-034-3000

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Stihl fs 36 44 Motor wont rev

Motor runs but will not rev.

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  • Carmen Price Jan 14, 2013

    This trimmer idles but will not rev up at all to drive the string so I can cut edges. ThanksAndrew for suggestion will see if that helps.

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  • 322 Answers

A very common problem I see with trimmers is the spark arrestor screen plugs up blocking the exhaust from exiting the engine causing the engine to not wind out like it should. If that doesn't solve the problem then check the diaphragm in the carburetor. Those units are obsolete and very difficult to find parts for so I wouldn't spend a lot of time or money on it to fix it

Posted on Jan 16, 2013

  • Carmen Price Jan 16, 2013

    Thanks for your info, I appreciate it very much

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Posted on Jan 02, 2017

  • 2239 Answers

SOURCE: hi, have a stihl fs 85, runs fine for 10 minutes, then just cuts out. tried cleaning carb, muffler.

Two things spring to mind, fuel tank breather, to rule this out slacken off the filler cap when the machine starts to die, if it picks up again change the tank breather, or the ignition coil is breaking down when hot, this would require a replacment unit.

Posted on Dec 16, 2012

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1 Answer

My stihl fs 56 rc was running great then just started bogging down and wont run right at all


Bogging issues tend to be fuel related. Check the fuel system from the filter to the carb, check the carb isn't blocked, check the exhaust is clear so that the gasses can escape.

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Hard to start..will not rev. up


STIHL TRIMMER-WEED EATER REPAIR: stihl carburetor ...

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www.youtube.com/watch?v=vK6MsQalprY
Sep 16, 2011 - Uploaded by JEREMY FOUNTAIN Here is what I did for my fussy Stihl FS 250r trimmer....this after sitting all ... STIHL FS80 FS85 FC85 HS80 CARBURETOR ASSY 41371200614 ...

Aug 07, 2015 | Stihl FS 85 Weed Eater

1 Answer

Stihl FS85 starts fine, But not take full throttle


Pumping the primer bubble while the engine is running should cause the engine to over fuel and stall (if the tuning is correct). Sounds like its not fueling enough, pumping the primer is forcing fuel through the carb causing the engine to pick up rev's, but this is soon exhausted which is why it wont rev on the throttle.
* Check that the fuel line is not damaged and drawing in air. (if this is intact try the next step)
* Strip and clean the carb. Replace any diaphrams if needed.
* Check gaskets seal between carb, air filter and cylinder.

Just out of curiosity what standard carb settings did you use.?

May 23, 2013 | Stihl FS 85 Weed Eater

1 Answer

Weedeater wont rev up


check the cable at the carburator and at the trigger itself probably is disconnected or broke

Apr 22, 2012 | Stihl FS 85 Weed Eater

2 Answers

Where do I find a free repair manual for Stihl FS 46


If you have a nice Stihl dealer he (or she) might be nice enought to print you the specific repair information that you may need but no place that I know of offers the complete manual for free.

Sep 06, 2010 | Oregon Scientific Complete Carburetor for...

2 Answers

Stihl FS 85 stalls and wont start after about 20


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Jim

Jun 10, 2009 | Garden

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