Air filter clean since you had it out? Replaced the spark plug? May be time for a good carb cleaning and diaphrams.

do the kits come with jets and "diaphrams" ?

Rebuild kits come with diaphrams and usually a needle. Unless you have serious corrosion, a can of carb spray, some Sea Foam, will be all you need to remove build up or varnish. You some compressed air-make sure every passage is clean and open. Replace the diaphrams and gaskets in the reverse order you removed them. I appologize if you've rebuilt them before, just giving some pointers.

dont apologize...never did rebuild this type of carb. ...i just opened it up and it didnt look that bad..however i tried the seafoam can and it didnt work...every time i poured it though the throat it stalled ....i guess what you are saying is to get a rebuild kit and use carb spry? or just try carb spray first.. thx

Sea Foam is a strong solvent which will stall most engines when dosed in quantity, especially small engines. Carb cleaner blasts with the red tube through any passage the tube with fit, followed by blasts of compressed air. Rebuild the carb with a new needle then diaphrams and gaskets in the order you removed them. If you removed the Hi and Low needles, reset them to one turn past the seated position to get you started, and then fine tune by ear if you know how, or at least with the recommended turns, counterclockwise by usuing a manual if you have one. You could have an air leak, bad seal or even ignition related issues, not just the carb. How old is the unit, as far as use or hours? Have you owned it since new?

i bought brand new in 1991..its a 1990 model..i also replaced the fuel line as well the vent line, they were cracked..... thats a thought an air leak..where to look though? by the way this unit only has an idle screw,thats it. no mix screws

Still stalls out after replacing the fuel lines/new fuel filter? A leaking crancase seal on an engine that size would be determined by doing a "leak down" test which would take a book to explain here. Rare on most smaller engines that have been maintained well. If you have solid fuel flow with no leaks, the airfilter is clean, the plug is new and gapped right, the carb is clean and set right, though you claim no needles to adjust(new one to me), then it may be a weak coil-allowing a good start, but falling out on warmup on high engine speed. You say the model is a GT 1100? Sounds right, but I can't seem to locate a good parts list.

The GT 1100 was an Echo model from that time period. It was the smallest trimmer they made, smaller than the common 2100/210. In fact, it only had a single line. I guess it didn't sell well enough, because it's no longer made. My dad has one, and I'm pretty sure I've adjusted the hi-speed and low-speed mixtures on it. I'm travelling to his house tonight, and I'll try to remember over the weekend to take a look. My 2100 from 1993 certainly had the two mixture screws. They are probably hidden under colored plastic caps, though. But those can just be removed and then the screws can be adjusted. With all that said, it seems unlikely that it ran well for all these years and then suddenly wasn't adjusted properly. So I'm still thinking either a dirty fuel passage or bad diaphragm in the carb. My dad's trimmer still runs very well, btw, so my own experience is that they are as a durable as any other Echo...which is to say "very."

Well said mattv21! I fired up my new SRM-340 a few weeks ago, and was quite impressed by everything a trimmmer/brushcutter has to offer! Powerful, efficient, and quiet! I love it!

well echoman i got the gasket/diaphram kit..installed it....so far so good!! back to full power at full throttle...still a little hard to start though....maybe my seafoam in tank will run though further to clean it. i also was interested in your weak coil idea. (by the way i regapped the new plug too)........ matt... unless im blind, no mixture screws....my booklet covers gt1100 and gt2100... the 2100 had mix. screws...

Good deal johnuch! Maybe tweak the throttle screw up just a tad to give it more fuel when it's cold. I need to ask you though. Make sure if you don't already, squeeze the throttle about and 1/8 or so when you start it cold. This was the procedure for models with no primer bulb, which I'm assuming yours does not have?. 1 oz per gallon average to keep the fuel and carb in good shape with the Sea Foam. If the machine is in overall good shape, and you plan on keeping it around, I recommend you look into buying a coil to keep on the shelf for that thing because they get harder to find each year, and Echo might drop them from existence before you know it. If you do decide to buy one, and can't locate one, get back with me. I've got a contact, Echo Dealer that has many NOS parts for equipment.

well I have finally finished weed wacking my tree beds "at full power!"..... echo I do have a primer bulb on this machine just cant find any mix screws.... anyway I will try to start it up tomorrow cold and see if starting it is easier if not I will try your idea of turning the idle up..and yes i intend to keep using this machine...as well as my pb2100 blower

Glad it worked out for you.

Seafoam is made to be put in the fuel, where it slowly works over time to prevent and remove deposits. It's also for the oil in 4-cycles. You need to clean your carb aggressively because it's clogged up with foreign matter. After you get it running, then use the Seafoam to prevent further trouble. Marvel Mystery Oil is also good, particularly in 2-cycles.

thx for your help on this, echoman and sax....still a little harder to start today(cold), but it has power again...weird.....

"matt... unless im blind, no mixture screws....my booklet covers gt1100 and gt2100... the 2100 had mix. screws..."

I doubt you're blind, but I might be a moron. I totally forgot to look at my dad's trimmer over the weekend. I'm sorry about that. Nonetheless, it sounds like you know what to look for, so you must be correct. Plus, it sounds like you're close to getting it running just right, too. Keep up the good work.

thx...trying to tweak it a little better at startup now, otherwise running fine.

My GT 1100 has been great. I bought it new but that was a while ago. There is a wire mesh screen between the muffler and the exhaust port that carbons up and will create the conditions you have described. I remove it and clean it with seafoam. Runs like new again!

just bought a used echo gt 1100, no spark to plug. How do i get spark at plug? Thanks

My Echo GT1100 shuts down when it warms up.

My ECHO GT 1100 is hard to start and then once I finally get started I give it gas and it shuts off every time even when I let it warm up previously it worked for a while and would just shutoff when it was hot Wilboro Carb

you either get a new carb....or get a diaphram kit.....