Why does my Leaf blower hard to start and shuts off after it starts

Does your owner's manual have maintenance procedures to use as a guide? Hard starting may be a simple as cleaning the air filter and replacing the spark plug while advanced repairs requires some knowledge of disassembling one, removing and cleaning the carburetor. Depending on age of this unit, carb rebuilding may be needed. A service manual might be needed to adjust carb settings if there are any (low and high speed needles). If a choke is used, is it in working condition?