Question about Troy Bilt Tb70ss Gas Trimmer
Posted by Anonymous on
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Posted on Jan 02, 2017
The needle and seat (esp. the needle) meter the amount of gas/oil that is being allowed into the metering chamber of the carb for use by the engine. Your problem does seem fuel related. These carbs are very temperamental and scare most folks. A guide to how they work can be found here: www.zamacarb.com/pdfs/TechGuide_2007.pdf
This will give you an understanding of what exactly you are dealing with. You may only require a diaghram kit or rebuild kit to get the carb back to the functionality it was designed for. That info can be found here once you know your carbs exact model number.
A troubleshooting guide for these carbs is included in the first pdf file, look it over maybe and see what you think. Post back maybe later after going to school (doesn't hurt to learn how they work). We will be here. I know you want to use this machine (its the growing season) but there are so many things that can be wrong that it needs to be narrowed down...sounds like fuel starvation and just may need to clean the inside of the carb with something like the brake parts cleaner spray. It is non-flammable and doesn't damage the sensitive parts inside these carburetors the way ehanol and harsh carb/chokle sprays and strong solvents due...NEVER soak these carbs in a "Gunk style" carb cleaning tank....it will seriously damage sensitive internal parts and check valves!
Posted on Jul 10, 2010
SOURCE: have a troy built tb
Sounds like you will need to clean your carburetor. Sounds like you have gotten some trash in the cauburetor, check your fuel container to see if more trash is in it.
Sometimes you can get by with priming the carburetor a few times, and letting it run a few times like that and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
If the mower/weedeater is over a couple years old, then I also recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, You will first seat the jet screws and count the number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns they were in/out.
Please do not forget to rate me,
I hope this helped
Posted on Aug 11, 2010
Hey... I have the same problem. It will start if I put in on #1, then it will continue to run if I put it on #2... but will eventually stop. It likes to idle between #1 and #2... but it will not run full power on any speed. Relativey brand new. Piece of junk and I will never buy a Troy Built anything even again!
Sorry I could not help with your problem. I can usually fix anything, but this thing is a piece of ****!
Posted on Feb 19, 2011
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