The Truman Doctrine arose from a speech delivered by President Truman before a joint session of Congress on March 12, 1947.
Positive First. When installing a mower battery, always connect the positive cable first. The positive cable is red. It attaches to the battery terminal post marked with a plus sign, the letter P or the word POS. Attach the negative cable last. The negative cable is black.
Disconnect the grounding wire (attached to the ignition coil.) Start the mower once again, and if you notice a spark, this signifies that the ignition coil is not responsible and that you instead have a separate electrical malfunction, possibly a safety switch not working correctly.