If your constantly using ether for starting either your carb idle screw is in too far giving it too much air, lean or your lo speed screw is out of adjustment.
Start the saw, warm it up, adjust the idle if it’s too high. Now turn in the low speed jet in till it almost stalls then back it out 1/2 turn. You might need to do this procedure a few times, lower the idle, turn the lo screw in.