Small Engines (Lawn Mowers, etc.): Husqvarna Mower recoil start, plug hole, gas oil

Question
I have a slight problem.  The first time you try to start the mower, the recoil about takes your arm off.  After that first pull, you are good to go, and it starts usually on the next pull. You can't try and trick it either, you have to give it a pretty good pull, and it just rips the string handle out of your hand.  Any ideas?

Answer
What engine is on the mower?  Either the cylinder it full of gas/oil, the flywheel key is sheared or the blade may be loose.

Check the blade bolt tightness, remove the spark plug and pull the string to see if gas/oil squirts out of the spark plug hole.

Let me know what you find.
Eric