Pull the sparkplug wire off the sparkplug and rest it on the stub at the top of the cylinder head. Loosen the oil dipstick level cap at the top of the engine. Tip the mower carefully and slowly on its side while holding the container right under the oil dipstick tube. Rock the mower a bit while still draining to get the oil that may be trapped in recesses in the engine. Read more fromhttp://www.gardenguides.com/104673-change-oil-craftsman-675-series-mower.html#ixzz1qtbIZxtE.