Briggs and Stratton Cast Iron 9hp engine problem solved
Using my own advice to others, I was able to correct a perplexing problem with this old engine.
Spark Tester Demonstration Briggs and Straton 400321 Cast Iron 12hp engine
This video is showing the difference in spark using this spark tester on a good Briggs and Stratton B&S 300421 12hp engine and a non-running ...