How to Tune up / Adjust a 2 Stroke Carburetor (Weedeater, Trimmer, Blower)

How to Adjust / Tune Up a 2 Stroke Carburetor on a Trimmer, Blower, Weedeater, Tiller or Hedge Trimmer.
Whether your equipment is bogging down, will not start or just runs poorly... a tune up of the carburetor may fix everything for you.
In this video I will show you the proper steps to take to make adjustments to your 2 Cycle carburetor so your engine will run at peak performance. I will also show you how to remove the limiter caps so you can access the adjustment screws to tune your 2 stroke carburetor.
*If this video was a help to you give it a "thumbs up". If you have not already done so, please consider subscribing to this channel.
Disclaimer:
Although I have been following these procedures for many years; I assume no liability for any damage that may occur to any person or property as a result of the information provided in this video. I take necessary precautions (that I am aware of) when working on these projects but that in no way implies or creates any expressed or implied warranty or guarantee of any kind of particular result. Any injury, damage or loss of any kind to anyone or their property or anything related to information in this video is the sole responsibility of the user and not Helping U Online (this video).

[@glennd7115]

Thank you! Wish me luck. I took the carburetor apart and cleaned it put in a new coil pack and spark plug started up on the first pull and ran great for a half hour, two weeks later now it won’t start, seems to be flooding out never knew how to adjust the carburetor until you showed me in your video Thank you

[@garyalensr]

Awesome explanation. To the point and you didn't jaw Jack for 20 min. All videos should be like this.... You got a new subscriber

[@helpinguonline]

Thanks and welcome

[@geraldjacobs2376]

I agree, you are straight forward , clear and understandable. I don't know how I stumbled in here , but I am glad I did Thanks, mister.

[@helpinguonline]

thanks for stopping by

[@harrysyam9934]

Sir, the carburetor I have can't turn one turn, only one fourth of a turn. Why is that? Is it really like that? There is something like a red cover.​@@helpinguonline

[@PropagandaFacts]

perfect manner and simple visuals to follow... great explanations to every aspect of tuning w/o all the confusing tearing a thing apart from the inside out. I've seen so many tearing everything down putting everything together and 'miraculously' the damn thing was perfect... never happened that way for me. thanks for the perfect tutorial. lol i just went to subscribe and i already am! lol

[@helpinguonline]

Thanks for the Sub!

[@williamwhite1596]

Thank you ! God Bless !!!

[@helpinguonline]

Thank you and God Bless you too!

[@todddumpstaman69]

Thank you for sharing this information I watch this video every single time my blower starts acting up cuz I keep turning the low idle screw the wrong way and have to run it all the way back in and start with the one and a half turn counterclockwise

[@seanrowland1670]

Thanks so much! Simple and concise instructions. I seem to have the most problem with my string trimmers, I will get to adjusting them today after watching this.

[@nickmarinatos3512]

Amazing video - thank you sir

[@helpinguonline]

Glad I could help you

[@scottjenkins3657]

you made getting those caps off look waaayyyyyy too easy LOL followed this procedure today on a McCulloch backpack blower, with success thanks to you!! automatic subscribe!! quick question... can the return line be too long?! cut mine a bit shorter than the filtered line, and i dont want it to interfere. think i should shorten it?? sure is causing some commotion within the tank. thank you for your efforts and time!!

[@helpinguonline]

Return line only needs to stub into the tank maybe an extra half inch inside the tank

[@scottjenkins3657]

@@helpinguonline thank you sir!! snipped it before running the blower today, and created another problem in the process. the tank grommet became unseated, and with it being worn already, i was fighting it all day. couldnt maintain proper pressure, had erratic performance and the purge/return combo were dysfunctional. hopefully replacing it will get the blower running good again. God Bless you and thank you for your efforts towards helping the community!!

[@helpinguonline]

God Bless you too! Thanks

[@scottjenkins3657]

@@helpinguonline thank you so much, kind sir!! cheers!!

[@farih8199]

Thank you for your help

[@helpinguonline]

Happy to help

[@DH-mf2lv]

I got one for you. I own a STIHL BR380 blower. Even though it’s 11 years old the hours are low. I only use non ethanol gas and synthetic oil. Last week after full throttle use of about 30 minutes it lost power (rpm’s dropped). I took off the cruise control and it idles fine. Shut it off and it starts fine but will not rev up to high rpm. Once cold I start it up and it does the same thing. Only difference is it only takes 2 minutes to act up now. I have done the following. Cleaned the spark arrestor, replaced the spark plug, air filter, fuel filter, carburetor (OEM), ignition coil, and fuel lines. Compression is 127 (checked it right after it lost RPM). I also removed the filler cap thinking the vent was clogged. No change. I also removed the muffler to check the exhaust port for carbon buildup, none. Spark plug tip looks normal. I was leaning towards an air leak somewhere. Once RPM’s dropped I sprayed starter fluid into the intake and it still didn’t accelerate. It has me buffaloed. Any thoughts? I know I can buy a new one but the new ones like this are 2.5 lbs heavier and I’m like you, I want to find the problem. Sure would appreciate some help!

[@helpinguonline]

Did you check the piston and cylinder wall for scoring?

[@DH-mf2lv]

Not yet. Looks good (viewing through the intake and exhaust port). Thanks. I think it’s an air leak. From where I don’t know. Cylinder bolts are tight. If a crank seal was leaking wouldn’t I see mixture leaking out?

[@helpinguonline]

I would be surprised if your problem is an air leak?... If that is it can you adjust your fuel mix screws and compensate for the problem at full throttle? It is hard to say without looking at it. Please let us know what you discover.

[@DH-mf2lv]

Adjusting the high speed screw does not help. Thanks for the suggestion though.

[@helpinguonline]

someone else out there may have a suggestion for you... or maybe you know someone near you who could give you a second opinion. I have another mechanic friend of mine and we give each other stuff like that from time to time for a second opinion and often it is something simple that we checked and missed or overlooked. Let us know what you discover the problem was.

[@Billster1955]

Thanks so much

[@alsouthern7190]

Sounds good

[@user-xq1rh6mo9y]

Can i adjust my stihl mistblower thesame way?

[@BBSE29]

Thank you this video is a great help I have adjusted carburetors in the past but I took me to much time to find the sweet spot with your technique I will be able to adjust them way easier and quicker. I am subscribed to your channel. If you would like to check out my channel its Backwoods Boy Small Engines I have basic knowledge with small engines but still learning. Thanks again for the video take care. 👍

[@helpinguonline]

Glad it helped and wishing you the best with your channel

[@joestyx8667]

YUP

[@ninazeng6036]

Sounds good