How do I test sparks for lawn mower? Do I leave the plug connected with wire when pulling the rope?
My lawn mower won't start and I replace the spark plug with no success. It's not the air filter because I tried to start without it. I want to test whether the new plug give sparks. I am not exatly sure how to do this. I guess I will remove the plug from the engine. Do I need to reconnect the plug with wire? Which part of the plug need to touch where to get a spark?
You need the wire on the plug, but it still needs to be grounded to complete the circuit. Get some insulated pliers/channel locks and touch the curved end (what you bend to open/close the gap) to the engine block (not a painted surface) and pull the rope. Since that wire is so short, your best bet is to touch it to the edge of the plug hole.
