[Sam Mac]

In following this thread I don’t see that we have verified that the engine has spark. Just my 2 cents but since you have the blower shroud off and the mag is accessible I would remove the kill wire (the white wire you are pointing to in your pic), pull the spark plug and lay it against the block and then crank it over and see if you have spark. You should also be able to find out if the engine is pumping air out of the spark plug hole at the same time. If you have spark but it’s not making compression you have bigger problems with this engine. Oh and it’s not a light meter, it’s called a test light. One end has a probe that you put against the circuit you are testing the other end is a ground wire with an alligator clip that you attach to ground. If the circuit has power the light lights up very simple. Any auto parts store should have a test light.