Does Murray gas snowblowers need oil?

An engine

must have three things to run..1] compression, 2] fuel,3] spark. If your engine is turning over you need to take out the spark plug to see if it is wet. If it is, then you flooded the engine... Change out the spark plug...If it isn't then you need to set the spark plug on top of the engine and turn it over as if you are going to start it. The spark plug needs to be grounded on the top so the current passing through the spark plug can jump that electrode at the very bottom of the spark plug. At the same time you pull the engine over, watch the spark plug so see if you can see a spark jump across the electrode. If you do then that part is ok. If not, then your spark plug could be fowled out and you might need a new one. Before you install the new plug back into the engine, check for spark. If you still do not get spark, recheck your ground...if still the same problem exist, then your coil could be corroded or gone bad.... If the spark plug checks out ok for spark, and if it happens to be dry when you take it out, the next step is to take some starting fluid and spray into the carburetor it's self. You do this by removing the air cleaner. If your engine starts and runs on the starting fluid only then your carburetor is plugged. This generally happens when it sits for a period of time. The gas will enamel inside the bowl of the carburetor and it will need to be cleaned and rebuilt. These are the very top two as to why your machine will not run. I wish you the best