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.
Remove the ignition key and the spark plug wire(s). Before checking the mower deck belt, ground the spark plug wire(s) against the engine to prevent unintended starting.