Spark test

[panasonic]

From your manual page 8-11

[panasonic]

Do you have a multi meter?

Adjust the points of spark tester so they are touching each other., then check for continuity of the spark tester. Maybe you have a bad tester.

Other than that I don't know what to tell you.

[panasonic]

Spark tester.

https://www.amazon.com/gp/aw/d/B0002...RRL&ref=plSrch