Be sure to check the electrode gap of your spark plug, even if the plug has been advertised as pre-gapped. An improper gap can stress the ignition system and cause misfires. Use a feeler gauge to check that the gap is between .028" and .031" or .7 mm and .8 mm. If the gap is out of spec, carefully bend the ground tab, being sure to not scar the electrode or ground tab.

Insert the new spark plug into the spark plug driver. Press it in firmly so that the rubber insert grips the plug and doesn't allow it to fall out when turned upside down.

Place the spark plug into the spark plug hole and turn it clockwise until you feel the gasket seat. Give the wrench approximately 1/4 to 1/2 a turn clockwise from the seated position to snug up the spark plug.

If you have a torque wrench available, Suzuki's torque spec for the spark plug is 8 lb-ft or 11 N-m.

Place the spark plug cap on the new spark plug. Press the cap on firmly until you feel it fully seat.