Carb problems saw will start and run for a few seconds and it sounds like it just runs out of gas

If this occurred after the Saw sat a few months then Ethanol gas could have clogged the tiny screen inside the carburetor. The gas could have also dried out the Little 'paper' Fuel meter in the carb.

carburetor needs cleaning. sounds like the Needle valve is not doing its job

Sounds like fuel starvation, always start with simple things first, replace the fuel filter in the fuel tank, check the fuel hose up to the carb for signs of leaking.

Probably gummed up carb. If you don't want to try to rebuild the carb, then try adding a really good carb / fuel injector cleaner to the gas/oil mixture. don't forget to use a very small amount, then run the motor as fast as it will go for short periods of time to try and dissolve the gumming in the jets.

Eric:

Find the gas/air adjustment screws on the carb (next to the the throttle cam where the throttle cable attaches. Turn the screws in all the way... GENTLY... Those are needle valves, and too much torque on them will damage the needle valve seats. turn both of them out one and a quarter to one and a half turns. Start the saw, and adjust one or the other screw in or out until the saw runs properly. If there is a plastic stop installed on the screws, remove it first, and replace it after the saw is running properly. You have to be patient while tuning the carb as it may take a while. If you adjust too much and the saw refuses to start at all, start over with the 1-1/4 to 1-1/2 turns out on the screws.

Sounds like the diaphragms in the carburetor have gotten dry and won't flex anymore. Install a new kit in the carb and recalibrate the screws. You should be good to go.

it sounds like a small piece of dirt is in the main jet of the carb assuming you have good spark. you may need to remove the carb and clean it. if it has a float then the needle may be sticking especially if it had older gas in it over the winter as it gets thick and plugs up the fuel passages. good luck.

I'd guess at a dirty carb. If its been sitting the gas may have gone bad and clogged up the carb. Try spraying some carb cleaner in the mouth of the carb. It's possible that the idle is turned up too high to compensate for clogged ports in the carb. This is a possibility but not a guaranteed solution. Good luck.

carb adjustments/also ratio of gas oil mixture

From your description, it sounds like your carb is running too lean. Make sure the spark arrestor screen is free of carbon build-up and the air filter is in place. Warm the saw up. With the saw at idle, adjust the Low adjustment screw to slightly enrich the mixture. If you turn it to run the fastest possible when idling, it is too lean. When the Low setting is right, you will be able to increase the RPM without it dying. If the High setting is way too lean, it may also die when you open up the throttle. If you run the saw too lean, it willl overheat and sieze.