When using carburetor cleaner on a gas mower, it's typically recommended to spray a short burst, about 2-3 seconds, directly into the carburetor's throat while the engine is off. If the mower is running, you can spray in small amounts to avoid flooding the engine. It's important not to overdo it; excessive cleaner can cause damage or stalling. Always refer to the manufacturer's instructions for specific guidance.
Fuel injectors take the place of a carburetor. They spray gasoline into the intake manifold just before the intake valves. Much cleaner burn and they don't leak like the old carburetors do.
Although I cannot be specific with this make and model, this trick has worked on numerous vehicles over the years. Disconnect the fuel line and unscrew the drain plug, which is located on the side or bottom of the carburetor bowl. Drain as much gas out as possible. Also drain and clean the fuel strainer and clean it with carburetor cleaner. Now either spray or pour carburetor cleaner into the fuel line and let it drain through the carburetor. At first it may not drain, but as it removes the varnish and gunk it should soon begin to flow. For really stubborn and a through cleaning of the carburetor you can replace the plug and fill the fuel line with cleaner and let it sit. I've done this in chainsaws, boats, bikes and cars over the years and have always fixed the problem.
Surging is the result of a "lean" fuel mixture, meaning too much air and not enough fuel. The problem is most likely a dirty carburetor or an air leak in the intake system. To fix, inspect the carburetor and intake manifold for cracks or looseness. Tighten all fasteners to ensure all seams are airtight. Clean out the carburetor with some carb spray and blow out all holes/orifices with compressed air. If problem persists, carburetor must be removed and disassembled/rebuilt.
The gauze won't absorb it all and it will drip. It could get into the carburetor too.
There are a couple of different ways. One is to spray some carburetor cleaner into it before starting your engine. Wait a few minutes, then start it up. While it is running, spray a little more in there. This won't completely clean it, but it's the easiest way. Another, and much more effective way would be to actually rebuild your carb cleaning it as you go. But that will require quite a bit of effort and a rebuild kit (not that expensive).
To properly tilt a lawn mower for maintenance or storage, first, make sure the engine is turned off and cool. Then, tilt the mower on its side with the air filter and carburetor facing up to prevent oil or gas from leaking. Avoid tilting it too much to prevent damage to the engine.
If by "overloading" you mean flooding (too much fuel), two reasons are (1) the carburetor needle valve is "wide open" or the float is stuck in the open position.
It if fuel injected and does not have a carburetor.
You need to rebuild that carb, there should never be that much fuel coming out of the jets.
what kind of oil for a sears push mower and how much?
Depends on the size of the mower.
That will vary for each make and model of mower.