Put a new spark plug in the spark plug socket

Put the new spark plug in the spark plug tube and use the spark plug socket and extension only to turn the spark plug in a clockwise rotation by hand until the spark plugs feel tight. Repeat for the other five new spark plugs.

Once the spark plugs are partially set, use the ratchet to tighten the spark plugs until they feel sufficiently snug. Once snug, complete one final 1/4 turn with the ratchet to completely seat the new spark plugs.

Be very careful with the new spark plugs and be sure not to drop them. If the porcelain housing of the spark plug is damaged, running issues such as a misfire can occur. Also be sure not to bend the metal piece on the end of the spark plug because if this metal piece is too far or too close to the electrode, running issues will occur.