Stating the obvious this is fuel starvation, so stating the the easiest things first replace the fuel filter in the tank, check the fuel hose up to the carb for any signs of leaks, replace if needed, are the hoses to the purge bulb fitted around the correct way as you have replaced it? dirt in the carb itself, this would require stripping the carb and cleaning, at the same time replacing the diaphragms, failing all this you may have an air leak, leaking gaskets, or crank seals.
SOURCE: Troy Bilt TB 465SS Pony 4 cycle weed trimmer won't start
Sounds like you need to take the carb. apart and clean it. I like to use a Den Tek Brush, (used for cleaning teeth), to clean the small ports in carb. they work great for this job. Make sure to either clean or replace the small screen in thcarb. as well.
Jim
SOURCE: Weed wacker wont start
You do know my neighbor took her sears craftsman edger in and got a new one after a year. TAKE IT BACK!!!!!!!!
SOURCE: ryobi ss30 weedeater not starting after repair,to the primer bulb
Follow the instructions exactly. If it won't start, take out the spark plug to see if it is wet, or dry. If it is too wet, the motor may be flooded. If it is completely dry, you have to figure out why it's not getting gas. I am assuming you are pressing the bulb the recommended number of times, and that there is gasoline in the bulb, providing some resistance to your pushes with your thumb.
SOURCE: Have changed plug and gas. hard to start but will
I would suggest cleaning the carb (remove it) and air filter. There are a few really small passages in the carb that need to be cleaned which get gummed up due to the 2 stroke mixture and sitting for the winter. (Even if you drained the fuel)
DO NOT use a piece of wire or anything to clean out any small passages. Use carb cleaner and compressed air, put it back on, and see if it's better.
If that doesn't do it, a carb rebuild is in order. Not very many parts on those little buggers. If the cleaning doesn't solve it, it's most likely a bad diaphram from sitting and drying out. (Which I'm learning towards due to the lack of pressure when you prime and having it starve for fuel and die after a minute of running). There is a square plate on the bottom of the carb held on by 3 or 4 screws. That's the cover for the diaphram. Remove the screws and plate and look at the diaphram to see if it has a hairline crack, if it's sticking (there's a spring under it), or if any thing else looks out of whack.
SOURCE: Husqavarna 125L E TEC weed eater won't stay running
CHECK THE SCREEN ON OUTPUT OF THE MUFFLER. ITS CALLED A SPARK ARRESTOR, THESE GET OIL FOULED AND MAKE EM A BEAR TO RUN . CLEAN IT UP AND SHE WILL RUN LIKE A CHAMP, THE CARB MIGHT NEED REBUILDING ,FUEL FILTER AND A SPARK PLUG IS THE FIRST THING TO REPLACE .. IF'N I WAS ANY HELP VOTE FOR ME ...THANKS.. JAY
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