How to Test a Small Engine for Spark
If your small engine isn't starting, you'll need to diagnose many issues including the spark plug. This video walks you through the steps of how to test for a spark using a spark tester.
Using a 3" hex bolt with some spacers on the extraction end and was able to easily remove the wrist pin. I then used the same method to press the pin back into one side of the piston, using only that side for leverage. I than aligned the piston and the crank arm/bearing and used a 5 inch bolt to press the pin back thru to the far side of the piston. ( Make sure the piston ports are properly aligned using the arrow on the top of the piston.) Had to make a few minor adjustment to make space for the side clips. Put the unit back together and it fired on the second pull. I was able to install the pin with out having to remove the crank arm or disassemble the unit.