Briggs & Stratton model 283707 type 0129-01 code 91110811. Dixon mower
Poured a small amount of fuel in carb but it will not fire, I have a blue spark at the plug. Any thoughts?

Here are a couple of articles that lay it out pretty well.

https://dengarden.com/landscaping/Why-Wont-That-Lawnmower-Start

https://www.consumerreports.org/cro/news/2015/06/why-your-mower-starts-then-stalls/index.htm