Blowers

I purchased a BVM200 blower in early October. I have used it several times without a problem. In fact, it always started and run great. The last time I tried to use it, it would not start. It is getting plenty of fuel as the spark plug is quite wet. It seems that the plug is not firing. The owner's manual says not to take it back to the store where I bought it (Walmart), so I don't know what to do. Can you help?
Thanks.