Question about Oregon Scientific Complete Carburetor for Stihl 4122 Brush Cutter and 4226HS Hedge Trimmer

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What are the high and low carb settings on a stihl fs76?

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High 2 turns out and low 1 and 1/2 turns out
after you get runing up operrating temp ajust
again throttle wide open ajust high neadle and
win idle ajust low neadle

Posted on Jul 18, 2009

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Whipper snippet stihl fs81 got no spark

Posted on Feb 17, 2013

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Carb settings for Stihl FS160


Here's a link to your owner's manual,look at page 26 for carburetor adjustments,I have 3 stihl's,a blower,weedeater and chain saw,had them a long time,never had to adjust the carb.What problems are you having?Clean your air filter or replace it if's real dirty and can't get clean,use 50;1 regular unleaded gas and oil mixture,put a new plug in it,same as you were using,Autozone has them cheaper than the Stihl dealer.Are you using your choke and throttle correctly when starting?On mine,I set the throttle,lock it in,put choke on close,pull a few times,no more than 5,then open choke and pull,it should start,is your spark plug getting oil-gas on it,if so then your flooding it at start up,use fresh gas mixture.I wouldn't adjust the carb. https://www.stihlusa.com/WebContent/CMSFileLibrary/instructionmanuals/FS160_180_Manual.pdf

Jun 14, 2017 | Stihl Garden

1 Answer

Stihl FS76 ignition module


41334001301 coil, NLA
you might try an obsolete part retailer
Ron's Saw Shop
1-800-433-6304
South Dakota

Dec 28, 2016 | Stihl Garden

1 Answer

ADJUSTING HIGH AND LOW ON A CARB FOR A STIHL FS 45 WEED EATER


Hi..in general i always set the high and low screws at 2 turns out from a complete stop..and please dont tighten the screws too tight..it will bend the needles...I think it will..or should run at them settings...as far as the gas out of the engine..it is or has a problem with the carb...did you remove the carb...? Also try starting it with only starting fluid for a very short time..this is how I check to see if all else is ok..spray it in the carb in take...

May 05, 2016 | Stihl Garden

2 Answers

I have a stihl 025. the carb i had had 1 adjustment the replacement carb has 2 set screws, what should the settings be to get started with


Usually when purchasing a new Carb, they are set very close. No adjustment needed. But if you want to play, turn both the High and Low screws all the way in then turn them bot out about 1.5 turns. that should get it started. The you will need to tweak the High sped and then the low speed and then the Idle

Dec 06, 2013 | Stihl Chainsaw 42mm Piston Rings 025 O25...

1 Answer

How do you set the carb screws on a stihl d12 avt chainsaw? how many turns for high an low?//?????


I would start by opening each 1 turn. Then 1/2 turn until I got it running. While running, set the low by turning the screw out until the saw starts to slow down. Then turn in until the same thing happens. Set the screw about 1/2 way in between. Do the same with the high but do it while running at a higher RPM. Do not run it wide open unless you have the chain in wood, cutting. Good luck...Lee

May 28, 2010 | Oregon Scientific Complete Carburetor for...

5 Answers

Stihl FS81(older style) brushcutter.New Carby dies under throttle


The problems you are having sounds very much like a blocked exhaust port/silencer. On these small two stroke machines it is normally the cause of lack of power or not revving. Happy gardening !!
Stantheman 19/09/2010

Mar 13, 2010 | Oregon Scientific Complete Carburetor for...

1 Answer

No power fs66 stihl weedeater


Hi When you cleaned the muffler out did you also clean the carbon out of the port on the cylinder as this can be blocked as well. Also you will have to retune the carby, There should be 2 screws 1 for low speed marked l on the carby body and 1 marked h for high speed to start with they should be set at 1 & 1/2 turns out from closed the low speed you set at an idle and the high speed you set at full throttle. Hope this helps.

Aug 03, 2009 | Garden

1 Answer

I have a stihl fs76 weed trimmer. It will start but not stay running. I took the carb apart cleaned it. It looks fine but it still won`t run good. Any common problems or ideas ?


Hi..my name is Keith...it sounds like the reeds in your carb needs replacing...usually if you use a carberator cleaner on them..it will ruin them..plus age will make them stiff..they should be as soft a rose petal..and its cheap and inexpensive to replace..but you have to pay attention to how many layers and the shape of the reeds that come out..because the kit that you buy will fix several different carbs..i hope this has helped..if not..write back

Jul 01, 2009 | Garden

2 Answers

Coil flywheel air gapfor stihl 09 model


set the air gap at .011 to .012.inches,set carb high and low needles at 1 turn and 1 turne to start. after running it might take a minor adjustment to finish

Nov 20, 2008 | Garden

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