If its a push lawn mower. It has no oil release. The mower burns the oil. All you do is replace the oil when it gets low.
Depending on the model of the Craftsman lawnmower, there is either an oil plug underneath the deck of the mower which needs removed to drain the oil or the lawnmower needs tipped on it's side to allow the oil to drain out through the oil cap area. Once oil has drained you will want to refill the oil until the dipstick registers "full".
drain it.
Many Yardman Lawnmower models do not have a drain plug. If no drain plug is found the oil has to be removed by the oil fill tube.
30 wt
what grade of oil on this engine
The oil drain plug for the Craftsman 625 series lawnmower is located on the bottom of the mower, just above the blade. Tip the mower back. The plug is round and threaded with a square head. Using the square head of a ratchet extension, twist the plug counterclockwise and remove. The oil will start draining. Once it has drained, replace the plug and tighten clockwise until snug. Replace with new lawnmower oil or SAE-30 weight oil.
Your owner's manual should explain that.
5w30
30 weight oil can use car oil or lawnmower oil same oil
If the wrong oil is used in a lawnmower, do not start it. Simply drain the oil as completely as possible and fill with the proper oil.
youtube - push mower oil change.... oil plug under mower deck
Sae 30w