Sae 30w
Only if you want to destroy that engine over time which is what will happen if you use 2 cycle oil. Use only SAE 10w30 synthetic oil any major brand.
Only if it is a 2 cycle engine and you mix the oil with the gasoline. If it is a 4 cycle engine, then using 2 cycle oil will destroy the engine over time. Use SAE 10w30 synthetic oil in your air cooled 4 cycle engine.
If you have to add oil to the fuel, it is a 2-cycle engine. If you have to add oil through a filler spout into the crankcase, it is a 4-cycle engine.
A Craftsman 917388592, has a 4-cycle, Briggs & Stratton engine.
NO, not as lubrication in the crankcase.
Two-cycle lawnmower engines are rare.
2 cycle oil if it is a 2 cycle. SAE 10w30 if it is a 4 cycle.
It can vary between 30W and 10W30. L-heads use 30W, OHVs often use 10W30.
10w30 weight if it is a 4 cycle. Use 2 cycle oil if it is a 2 cycle.
The manual recommends Lucas oil, which is what I use. I use the 30 oil, but you could use 10W-30. http://lucasoilstore.com/store/index.php?main_page=product_info&cPath=89&products_id=743&zenid=b07fc91b0f62e86b02a2bf116fa2f23d
.030 for both 2 and 4 cycle
Depends on what you are using it in which you fail to list.