Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Let's see what engine you have.
Engine is Briggs opposed twin engine, It has a single coil for both spark plugs. Locate the coil next to the flywheel, and remove the single black kill wire, then check for spark. If no spark, the coil is bad. See 333 on the link above I sent.
Of you do have spark, coil is good and problem is either the kill wire or the keyswitch shorting out the coil.
Did you see my response?
I would clean the rust off the flywheel magnet and the tips of the coil. But removing the kill wire would be my first test!