Yardman Yard-Man 27cc 2-Cycle Medium-Duty Gas Blower with Vacuum Kit YM2BV

recoil spring might be broken

try getting a new carb 25 or 30 bucks rebuild kit about 18 bucks so it one or the other, good luck.

Do not start to do this but put the blower in gear like you would run to drive its self and try to turn the wheels by hand and if they turn easily then you may have a shear pin that is broken or missing in the drive pulley.
Just a thought.

There may be a plugged fuel filter in the fuel tank, or perhaps you have the oil mix to rich. other problems could be that it needs a new spark plug or carburetor adjusted.
Try spraying the carb out with carb cleaner, add a little seafoam in with the gas.

sounds like float is stuck remove the carg. and check

Check with Sears Parts Direct.com

if it is 2 cycle use 2cycle oil

check your owners manual if you dont have one go to PartsTree.co you may be able to download one

they only have a screen inside the tank and don't use a regular filter

try PartsTreeRepzairClinic they may have a video