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If the lawnmower has two compartments one for gas and the other for the oil, then put gas in the gas and a 30w type oil in the oil compartment. Simple as that. If you have an engine with only one compartment then you'll need to check on the manufacturers suggestions which is usually 40:1 or something close.
There are dozens of different models of Craftsman riding mowers, with a different answer for each. You need to get the owner's manual for YOUR mower (you can get it on-line for free) and read the manual.
You don't need a lawnmower. There is no law that requires you to need a lawnmower, but, if you have a lawn and want to keep it tidy you would be advised to use a lawnmower as a scythe requires much skill and a lot of energy.
No.
unnderneath the lawnmower there should be 4 main bolts near each corner of the motor theese need to come out
If your lawnmower stops working after five seconds of use, you may need gas. It can also be a problem with your fuse.
No, I do not need a manual for a craftsman miter saw, but thank you very much for your concern.
The fuel filter may be clogged. If it stalls while operating (mowing), the carburetor may need to be set to a slightly richer mixture. Turn needle valve counter-clockwise 1/8 turn. Before adjusting the carb, check the condition of the spark plug.
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.
The classes that someone needs to take to become a craftsman are college classes. They would need a vocational certificate in crafting. This of course only applies to professional craftsman. No classes are needed for freelance work.
It may need fuel, or it may need oil or spark plugs.
No, it doesn't. But its owner will need them, and an attorney as well.