Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: Dh1984 on December 21, 2011, 09:39:23 pm
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i just bought a carb and some other parts (to get my new to me 041 farmboss stihl going again) from a fellow on Arborist site.the carb bought has been rebuilt and cleaned before shipped to me.but one problem i got is when i start it and try to retune it like he told me too.it don't do nothing but over load even when both screws all the way in. and it never does get full throttle.but it will set and idle for about 10 to 12 seconds i guess and then choke out.i knew how to post a video i would post one.but it will spit mix out the top of the carb and out the muffler. i'm about to the end of my ropes with this thing. i'm about to take it to the stihl dealer tomarrow and see what he can do.But i wanted to come on here first and see if anyone knew what i can do to get it going like it should.
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Sounds like the metering valve on the regulator side of the carb is stuck open or set up wrong?
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Ah I See how do you set the metering valve? and what does it suppost to set on?
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This is a layman site and he calls the metering valve of the regulator the needle valve
http://tech.flygsw.org/walbro_tuneup.htm
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Here is a Walbro manual
http://wem.walbro.com/distributors/servicemanuals/ServiceManual.pdf
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oh i c well the carb i got one it is a tilly and i can't figure out how to post a video of it to show you how it runs at WOT.
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The Tillotson is set up pretty much the same as a Walbro
You need to know which model Tillotson you have like a "HL" for example
http://www.tillotson.ie/techinfo-downloads.php
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ok i'll go and see what kind i got and post it.
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i think it is a HS Tilloson
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Here's the manual for the HS series
http://www.tillotson.ie/docs/techinfo_HS_US.pdf
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Here the individual parts list for the different HS series carbs
http://www.tillotson.ie/docs/HSPartsList.pdf
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ok thanks is it possible that if it is out of time by a one number will it do this same problem and not let it get max WOT? i got the points set at .015 and the manual i got says they should be set .016.
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.001" too close on your points is not going to make that much difference in timing.
The problems you describe in your first post relate to the needle of the metering valve in the carb is open all the time and letting fuel enter the engine almost continuously.
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oh i c well i might go a head and buy a other rebuild kit and see what i can do with it. i tried everything i know and it still isn't running like it should.
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The carb should be a HS138A or maybe a B
You might check and see what the dealer wants for a new carb?
This is a bigger carb and a different brand than what I've recently bought but I have bought two carbs from Stihl recently in the low $20's.
The carbs ran perfectly on the saws with no adjustments out of the box.
I bought a Tillotson recently from the Dolmar dealer and it was on the expensive side.
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oh ok i'll check and see what i can get tomarrow hoep fully it won't be to much for a new carb for this saw.
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and i also going to leave it with him hope fully he will get it running like it should be.if not it will be used for a part saw i'm looking at on ebay that has everything exsept the bar and chain cover and bar and chain LOL.
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Well here's a update on My stihl 041 farmboss. I got to working on it again and i think i figured out what i done wrong when i was setting the points. well i went out to my shop to reset them and make sure they was right on .016 and they was on .015 well i made sure they set right on .016 and then i found out what i have done when i cleaned them. i wasn't looking pastt he points to the base and i didn't know that base moves when you loosin the screw.well to make a long story short i made sure i put the screw dead center on the base of the points and then went in out there and gave it a good crank and SHE FIRE RIGHT OFF and ran good. i then retuned it and now it will hit the first pull of the rope. but now i have to find me a new clutch and air filter for it and she will be cutting wood once again.
So thanks everyone for trying to help me i sure do appericate it.if it quits raining i'll get a video of it running again.
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Good to hear you are getting the problems solved
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Yes it's good to get it running again like it should. but only thing i have to find now is the probly a whole new clutch system and a air filter and a flywheel fan. i already got the the flywheel i just need the the fan that 3 screws holds it on. i been searching e-bay but no luck on that and i searched a few other places and no luck there.i even checked with my dealer and he said that i was out of luck on them.but i might get lucky and find one someplace.but with all that it runs like a new one again.
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Well now my curiosity is getting the best of me . After posting on two different web forums about this saw was there anything that worked on it when you got it ? I certainly hope you didn't pay much money for it .
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Have you found a air filter , clutch, or fan wheel. I just did some work on a couple 041's last week. The air filter you can still get from stihl. I have some of the parts you are looking for if you are still interest.
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yes thanks i found everything i needed to get it going again.thanks for the offer but i already got it going again.