SAE 30 is recommended for most small engines without an oil filter. 10w30 is recommended if the engine has a spin on filter.
Yes 10w30 is a good oil for snowblower or lawnmower.
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.
When you overfill oil in a lawnmower it will smoke when you tip it sideways while mowing,it has no harm
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drain it.
to put the oil in the lawnmower's crankcase would be fine, so long as it is an appropriate viscosity.
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".
Depending on what lawnmower you have just simply take the spark plug out and tilt lawnmoer
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.
Not really sure what you're getting at. If your lawnmower engine is a 2-stroke then you need a mixture of oil and gas to run it.
NO, not in any lawnmower made in the last 40 years. Use SAE 30 or SAE 10W30 detergent oil.
To much oil. or the valve stem is loose and its leaking oil