Small Engines (Lawn Mowers, etc.): Snowblower wont start, internal passages, sparkplug

Question
Hello,
I have a used snowblower that worked great for a few weeks and now it won't start at all, not even turn over.  I replaced the sparkplug when I first got it.
Any ideas what I should look at when trying to fix it.
It seems to be leaking gas also which I thought might be coming from the prime pump button.
Thanks

Answer
Because it is leaking fuel, I recommend you thoroughly clean the carb, including pushing a piece of tag wire through all of the internal passages and following up with aerosol carb cleaner.  Make sure the entire fuel system is clean also and replenish with fresh fuel once clean.  Then make sure the spark plug is still OK and check for spark.  If it still doesn't start, write back and let me know what the symptoms are.  Hope this helps.