Unlikely. However, it will most likely run hot and seize. Best case, it'll start again when it's cooled. Worst case it'll never run (right) again.
If your lawnmower is a 2 stroke mixing oil in the gas is what it needs to run right. If your lawnmower is a 4 stroke mixing oil in the gas fouls the plug and makes it not run.
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.
A self propelled pushing lawnmower might stop operating because you may have gotten something caught in the blades. Or the operator might haver run out of energy. If a power mower. A possible reason. If you don't check the oil, you might have run out. Once the engine gets hot enough, without oil, it will seize up. This will render your lawnmower useless. Whenever you use your lawnmower, just like checking the gas, check the oil also. As running out of gas will stop the lawnmower temporarily, running out of oil can stop it forever.
Drain the oil and gas out of the crankcase and put oil back it should be OK
It may need fuel, or it may need oil or spark plugs.
Yitou can. But its not recommended. It wont run right. Stick with the manufacturers recommended weight.
oil will run away from crankshaft and become dry on rod thus rod is is dry no oil rod breaks comes out side of block
No, normally weedeater gas has oil mixed in with it. This will gunk up the engine and cause the spark plug to fail.
10W30 can be used, but SAE30 is best. 10W30 can run a bit hot, in warmer climates.
If you run an engine without oil, the pistons will over heat, and other components in your cranckcase and parts that need oil can crack because of no oil. You'll spend big $ to get your car fixed if you run it with no oil.
Assuming that you have not run it yet, your best move is to drain the gas tank and refill with the correct mix for your 2-cycle engine. You can pour some 2-cycle oil in the tank, close the cap, and rock the mower to mix. But without knowing exactly how much gas you put in the tank, you run the risk of an incorrect mix damaging your engine. Not worth it in my opinion.
Depends on the engine, and how it's cooled. Air-cooled engines typically run quite hot, and a heavy oil is necessary (20W to 30W oil). Liquid cooled engines typically run a bit cooler and can run a lighter oil (15W to 20W). For example, I have a 5.5 HP Honda air-cooled engine on my push mower and it requires 30W oil. Best answer I can give you is check with your owner's manual or call/contact the engine manufacturer and they can give you a definite answer. Opt for synthetic oils with the manufacturer's recommended weight. Just like your car, lawnmower engines benefit from high grade synthetics, and the added cost for the oil is quite minimal.